child->m_pParent == 0

最新推荐文章于 2020-09-08 19:58:55 发布
原创 最新推荐文章于 2020-09-08 19:58:55 发布 · 582 阅读 · 0 ·
CC 4.0 BY-SA版权
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。

本文将介绍如何在编程中解决父子节点关系错误的问题，通过实例展示如何定位并解决节点重复添加 addChild 导致的错误，以及如何通过堆栈跳转到相应代码进行修正。

说明此节点的父节点不为空，重复添加了addChild，因为儿子不能有两个父亲，此时就会报错，只要用原来的父节点把该节点remove掉，就可以解决这个报错。点击重试，通过堆栈，跳转到相应代码，找到哪一个node对象重复添加addChild，把该节点remove掉，就可以了。

cocos2dx中的回调函数CC_CALLBACK_*
yongG3224的专栏
07-24 3097
cocos2dx对CC_CALLBACK_*使用了std::bind进行函数适配// new callbacks based on C++11 #define CC_CALLBACK_0(__selector__,__target__, ...) std::bind(&__selector__,__target__, ##__VA_ARGS__) #define CC_CALLBACK_1(__se
cocos2d-x中 child->m_pParent == 0 异常的可能情况之一
鼓浪屿对面海景房
03-20 2546
在cocos2d-x中，可以用CCNode类 自己new一个节点（或是用CCnode::node（）、create（）），当将它作为其他若干item（如button项、sprite项、image项）的父节点时，注意，那几个item子项此时一定不要有父节点，儿子不可以有两个父亲，此时操作会引起程序的莫名异常，但有这句:child->m_pParent == 0。这个时候，要把原有父亲的关系解除，用r
我的 “child—>m_pParent ==0” 的异常
qq1656422756的专栏
09-15 957
bool HeroLayer::init(){ bool Ret=false; do  {   CC_BREAK_IF(!CCLayer::init()); CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("pd_sprites.plist"); _actors = CCSpriteBatc
黑苹果专用英伟达显卡驱动WebDriver-387.10.10.10.35.106
热门推荐
qq_35214326的博客
06-06 3万+
黑苹果专用英伟达显卡驱动WebDriver-387.10.10.10.35.106，全网更新最快，黑苹果社区！最新支持macOS High Sierra 10.13.5 (17F77)的英伟达黑苹果显卡驱动，所以我们可以用我们手里的PC电脑安装黑苹果。像GTX1050、1060、1070、1080或TI都驱动。缺点嘛？就是不能随意升级，升级有可能会挂掉，总之黑苹果比白苹果好太多了，硬件方便可以随便...
Cocos2dx：出现异常 child->m_pParent == 0
自信的尘埃 www.gocpplua.com
07-31 1519
Cocos2dx：出现异常 child->m_pParent == 0
出现异常 child->m_pParent == 0
IT_small_farmer的专栏
06-05 2103
在cocos2d-x中，可以用CCNode类 自己new一个节点（或是用CCnode::node（）、create（）），当将它作为其他若干item（如button项、sprite项、image项）的父节点时，注意，那几个item子项此时一定不要有父节点，儿子不可以有两个父亲，此时操作会引起程序的莫名异常，但有这句:child->m_pParent == 0。这个时候，要把原有父亲的关系解除，
cocos2d-x－2.2.3 CCAssert( child->m_pParent == NULL, "child already added. It can't be added again")...
weixin_34050389的博客
04-22 200
看了本书，书上比较坑爹的部分就是基本只给函数，不给完整的文件，对于新手来说真是让人捉急啊～～～ 看到CCControl的时候，试了下CCControlSlider, 书上只给了init()函数的代码，头文件啊命名空间什么的都没提，有点坑爹～ 改了改查了查，完整的（好吧，一个比较坑爹的实现）.h文件代码大致如下： #include <iostream> #include "...
根据我提供的控件源码，写出一个更好的控件 #ifndef _CONSOLE_H_ #define _CONSOLE_H_ #define _CRT_SECURE_NO_WARNINGS #define NO_WARN_MBCS_MFC_DEPRECATION #include <SDKDDKVer.h> //#include <afxwin.h> #include <afxcmn.h> #include <concurrent_vector.h> #define CONSOLECOLOR_BLACK "\x1E\x1D" //字体 黑色 #define CONSOLECOLOR_RED "\x1E\x1F" //字体 红色 #define CONSOLECOLOR_GREEN "\x1E\x20" //字体 绿色 #define CONSOLECOLOR_YELLOW "\x1E\x21" //字体 黄色 #define CONSOLECOLOR_BLUE "\x1E\x22" //字体 蓝色 #define CONSOLECOLOR_PURPLE "\x1E\x23" //字体 紫色 #define CONSOLECOLOR_CYAN "\x1E\x24" //字体 青色 #define CONSOLECOLOR_DEF "\x1E\x25" //字体 默认色 class ScrollBar; struct LineInfo { DWORD m_dwStrLen;//行内容的长度 DWORD m_dwHead;//行首的sel游标 DWORD m_dwMaxSelWnd;//当前控件x轴尽头的sel DWORD m_dwTail;//行尾的sel int m_xPos;//行首的x开始坐标 int m_yPos;//行首的y开始坐标 DWORD m_dwMaxPixl;//此行内容占最大的像素 int* m_pDx; ~LineInfo() { if (m_pDx)delete[]m_pDx; } }; class Console: public CRichEditCtrl { public: Console(CWnd* _pParent); ~Console(); template<class ...Args> void Printf(const char* pformat, Args... args) { int len = std::snprintf(nullptr, 0, pformat, args...); if (len > 0) { char* szBuf = new char[len+1]; std::snprintf(szBuf, len+1, pformat, args...); split(szBuf); delete[]szBuf; } } private: void split(const char* _szText); void printf(const char* _szText); private: CDC* m_pDC; CRect m_rcWnd; BOOL m_bIsTrack; CFont m_Font;//默认字体,只是方便计算字体占屏幕长度使用的 int m_nFontSize;//默认字体大小(单位Twips) 如220Twip = 220/20 = 11磅 CHARFORMAT2 m_CF;//最终字体的数据 concurrency::concurrent_vector<LineInfo> m_vecLineInfo; ScrollBar* m_pHScroll; SCROLLINFO m_infoHScroll; DWORD m_pixCurMaxChars; ScrollBar* m_pVScroll; SCROLLINFO m_infoVScroll; int m_iLineHeight; int m_iStartPos_x; int m_iPrePos_x; bool m_bIsCapture; CHARRANGE m_StartSel; public: DECLARE_MESSAGE_MAP() afx_msg void OnEnSelchange(NMHDR* pNMHDR, LRESULT* pResult); afx_msg void OnEnMsgfilter(NMHDR* pNMHDR, LRESULT* pResult); afx_msg void OnMouseLeave(); afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar); }; extern Console* pConsole; #define console(_format, ...)pConsole->Printf(_format, ##__VA_ARGS__); #endif#include "Console.h" #include <io.h> #include <thread> #include "ScrollBar/ScrollBar.h" Console* pConsole = NULL; Console::Console(CWnd* _pParent) : m_nFontSize(10 * 10), m_bIsTrack(FALSE), m_pHScroll(NULL), m_pVScroll(NULL), m_pixCurMaxChars(0), m_iPrePos_x(0), m_iStartPos_x(0), m_bIsCapture(FALSE) { if (_pParent) { const char* szFontName = "lucida consoles"; //Arial _pParent->GetWindowRect(&m_rcWnd); m_rcWnd = {10, 0, m_rcWnd.Width()-15, m_rcWnd.Height()-15};//682 //| WS_HSCROLL | WS_VSCROLL if (CreateEx(NULL, WS_CHILD | WS_VISIBLE | ES_LEFT | ES_WANTRETURN | ES_MULTILINE | ES_READONLY | ES_AUTOHSCROLL | ES_AUTOVSCROLL, m_rcWnd, _pParent, 0))// { m_pDC = GetDC(); SetBackgroundColor(false, RGB(30, 30, 30));//设置背景颜色 LimitText(32767);//系统默认设置是 32767 = 31.999kb 只能限制用户的输入 //创建新字体数据,此字体只是方便计算屏幕显示的长度用的。最终字体数据以 CHARFORMAT2 为准 //以十分之一磅为单位。例如，如果你想要一个12磅的字体，你应该传递120作为这个参数。 m_Font.CreatePointFont(m_nFontSize, szFontName);// 100/10 =10磅，相当于200Twip CreatePointFont用的单位是Point, 是磅的10倍，刚好是Twips的一半 SetFont(&m_Font);//设置字体 m_pDC->SelectObject(&m_Font);//dc选择当前字体 /* 1缇等于1/1440 英寸或1/567厘米 缇(Twips) （缇：计量单位，等于“磅”的 1/20，英寸的 1/1440。一厘米有 567 缇。 像素(Pixels)：监视器或打印机分辨率的最小单位 右键单击桌面，选择属性，选择“设置”选卡，单击高级按钮。 里面出现DPI设置。一般为“正常尺寸(96 DPI)”。 DPI的意思就是 DPI(Dots per Inch)。因此我们可以得到如下换算公式 1 Pixel = 1440 TPI / 96 DPI = 15 Twips 1 Twip = 96 DPI / 1440 TPI = 0.0666667 Pixels 磅：指打印的字符的高度的度量单位, 1磅等于1/72英寸，或大约等于1厘米的 1/28。 英寸：2.54 厘米 一般情况下：1厘米=8505像素 20Twip = 1磅 = 20*0.0666667 = 1.333334 Pixels */ LRESULT FontStyle = 0; FontStyle = SendMessage(EM_GETLANGOPTIONS, 0, 0); if (FontStyle & IMF_DUALFONT) { FontStyle &= ~IMF_DUALFONT; //"<CRichEdit_Ctrl::CRichEdit_Ctrl>成功去掉IMF_DUALFONT"; } SendMessage(EM_SETLANGOPTIONS, 0, (LPARAM)FontStyle); /* PARAFORMAT2 pf; ZeroMemory(&pf, sizeof(PARAFORMAT2)); pf.cbSize = sizeof pf; pf.dwMask |= PFM_ALL; pf.bLineSpacingRule = 100; pf.dyLineSpacing = 400; pf.dySpaceAfter = 400; pf.dySpaceBefore = 400; pf.dxStartIndent = 100; pf.dxRightIndent = 100; SetParaFormat(pf); */ TEXTMETRIC tm; ::GetTextMetrics(m_pDC->GetSafeHdc(), &tm); m_iLineHeight = tm.tmHeight + (tm.tmDescent*2);//取得行高 //准确的字体数据 memset(&m_CF, 0, sizeof(m_CF)); //StrCpyA(m_CF.szFaceName, szFontName);//设置字体 //m_CF.cbSize = sizeof(CHARFORMAT2); m_CF.dwMask = CFM_EFFECTS | CFM_COLOR; m_CF.dwEffects = 0; m_CF.crTextColor = RGB(165, 165, 165);//设置颜色 //m_CF.yHeight = m_nFontSize;//除20得到磅 如 200/20 = 10磅 //默认的字符磅数 SetDefaultCharFormat(m_CF);//设置字体 SetEventMask(GetEventMask() | ENM_CHANGE | ENM_SELCHANGE | ENM_SCROLL | ENM_MOUSEEVENTS); //创建滚动动 m_pHScroll = new ScrollBar(); if (m_pHScroll->Create(SB_HORZ, CRect(m_rcWnd.left, m_rcWnd.Height(), m_rcWnd.right, m_rcWnd.Height()+15), _pParent)) { m_pHScroll->SetTarget(this); memset(&m_infoHScroll, 0, sizeof m_infoHScroll); m_infoHScroll.cbSize = sizeof m_infoHScroll; m_infoHScroll.fMask = SIF_ALL; m_infoHScroll.nPage = m_rcWnd.Width(); } m_pVScroll = new ScrollBar(); if (m_pVScroll->Create(SB_VERT, CRect(m_rcWnd.right, m_rcWnd.top, m_rcWnd.right+15, m_rcWnd.bottom), _pParent)) { m_pVScroll->SetTarget(this); memset(&m_infoVScroll, 0, sizeof m_infoVScroll); m_infoVScroll.cbSize = sizeof m_infoVScroll; m_infoVScroll.fMask = SIF_ALL; m_infoVScroll.nPage = m_rcWnd.Height(); } } } } Console::~Console() { m_Font.DeleteObject(); if (m_pHScroll)delete m_pHScroll; if (m_pVScroll)delete m_pVScroll; for (concurrency::concurrent_vector<LineInfo>::iterator iter = m_vecLineInfo.begin(); iter != m_vecLineInfo.end(); iter++) { if (iter->m_pDx) { delete[] iter->m_pDx; iter->m_pDx = NULL; } } } /* *0x1E RS (Record Separator) 记录分离符 属性代码 颜色 29 黑色 = 0x1D 31 红色 = 0x1F 32 绿色 = 0x20 33 黄色 = 0x21 34 蓝色 = 0x22 35 紫色 = 0x23 36 青色 = 0x24 */ void Console::printf(const char* _szText) { const char* szText = _szText; char byteColor = 0; //如果\n会替换成\r int indexLine = LineFromChar(-1);//取出当前行号 long lStart = 0; long lEnd = 0; GetSel(lStart, lEnd);//取得当前的光标位置 CString szStart; GetTextRange(lStart - 1, lEnd, szStart);//当前光标向后选择一位字符，并取出此字符 if (szStart == '\r' || szStart == "")//判断字符是否行头 { CPoint point = PosFromChar(lEnd); LineInfo info; memset(&info, 0, sizeof info); info.m_dwHead = lEnd; info.m_xPos = point.x; info.m_yPos = point.y; m_vecLineInfo.push_back(info);//保存行头的光标位置 } if (_szText[0] == '\x1E') { switch (_szText[1]) { case '\x1D': { m_CF.crTextColor = RGB(0, 0, 0); break; } case '\x1F': { m_CF.crTextColor = RGB(255, 0, 0); break; } case '\x20': { m_CF.crTextColor = RGB(0, 255, 0); break; } case '\x21': { m_CF.crTextColor = RGB(255, 255, 0); break; } case '\x22': { m_CF.crTextColor = RGB(0, 0, 255); break; } case '\x23': { m_CF.crTextColor = RGB(199, 0, 106); break; } case '\x24': { m_CF.crTextColor = RGB(0, 255, 255); break; } default: { m_CF.crTextColor = RGB(165, 165, 165); break; } } szText = _szText+2; SetSelectionCharFormat(m_CF); } ReplaceSel(szText); m_CF.crTextColor = RGB(165, 165, 165);//重置回原始颜色 SetSelectionCharFormat(m_CF); LineInfo* pInfo = &(m_vecLineInfo[indexLine]); //尝试取出控件尽头x轴末尾是否有字符存在 GetSel(lStart, lEnd);//取得当前的光标位置 GetTextRange(lEnd - 1, lEnd, szStart);//当前光标向后选择一位字符，并取出此字符 bool bIsEnter = false; if (szStart == '\r') { //已经完成换行操作 bIsEnter = true; pInfo->m_dwTail = lEnd - 1; GetTextRange(pInfo->m_dwHead, pInfo->m_dwTail, szStart);//取出本行内容 CPoint point = PosFromChar(pInfo->m_dwTail); pInfo->m_dwMaxPixl = point.x-1;//此行文本的最大像素 int len = szStart.GetLength(); int iFit = 0; CSize size = { 0, 0 }; if (pInfo->m_pDx) { delete [] pInfo->m_pDx; pInfo->m_pDx = NULL; } pInfo->m_pDx = new int[len]; pInfo->m_dwStrLen = len; ::GetTextExtentExPoint(m_pDC->GetSafeHdc(), szStart, len, point.x, &iFit, pInfo->m_pDx, &size);//计算出本行每个字符所占的像素,并把每个字符的像素存在m_pDx数组里面 pInfo->m_yPos = indexLine * m_iLineHeight; } else { pInfo->m_dwTail = lEnd; CPoint point = PosFromChar(pInfo->m_dwTail); pInfo->m_dwMaxPixl = point.x;//此行文本的最大像素 } //重置水平滚动条信息 if (pInfo->m_dwMaxPixl > (DWORD)m_rcWnd.Width() && pInfo->m_dwMaxPixl > m_pixCurMaxChars) { m_pixCurMaxChars = pInfo->m_dwMaxPixl; m_infoHScroll.nMax = m_pixCurMaxChars; m_pHScroll->SetScrollInfo(m_infoHScroll); } if (bIsEnter) { //已经完成换行操作 if (((indexLine + 1) * m_iLineHeight) > m_rcWnd.Height()) { m_infoVScroll.nMax = ((indexLine + 1) * m_iLineHeight); m_pVScroll->SetScrollInfo(m_infoVScroll); m_pVScroll->SetScrollPos(m_infoVScroll.nMax - m_rcWnd.Height());//向下滚动 } LineScroll(1); } } void Console::split(const char* _szText) { const char* szCurText = _szText; const char* szOldText = _szText; char* szPreText = NULL; int len = NULL; const char* szClrText = NULL; if (_szText[0] != '\x1E') { bool bIsFined = false; while ((szClrText = strchr(szCurText, '\x1E'))) { bIsFined = true; len = szClrText - szOldText; szPreText = new char[len + 1]; szPreText[len] = 0; memcpy(szPreText, szOldText, len); Console::printf(szPreText); delete[]szPreText; szCurText = szClrText + 1; szOldText = szClrText; } if (bIsFined) { if(szOldText)Console::printf(szOldText); } else { Console::printf(_szText); } } else { bool bIsFined = false; szCurText = _szText + 1; while ((szClrText = strchr(szCurText, '\x1E'))) { bIsFined = true; len = szClrText - szOldText; szPreText = new char[len + 1]; szPreText[len] = 0; memcpy(szPreText, szOldText, len); Console::printf(szPreText); delete[]szPreText; szCurText = szClrText + 1; szOldText = szClrText; } if (szOldText) { Console::printf(szOldText); } } } BEGIN_MESSAGE_MAP(Console, CRichEditCtrl) ON_NOTIFY_REFLECT(EN_SELCHANGE, &Console::OnEnSelchange) ON_NOTIFY_REFLECT(EN_MSGFILTER, &Console::OnEnMsgfilter) ON_WM_MOUSELEAVE() ON_WM_VSCROLL() END_MESSAGE_MAP() void Console::OnEnSelchange(NMHDR* pNMHDR, LRESULT* pResult) { SELCHANGE* pSelChange = reinterpret_cast<SELCHANGE*>(pNMHDR); // TODO: 控件将不发送此通知，除非您重写 // CRichEditCtrl::OnInitDialog() 函数，以将 EM_SETEVENTMASK 消息发送 // 到该控件，同时将 ENM_SELCHANGE 标志“或”运算到 lParam 掩码中。 // TODO: 在此添加控件通知处理程序代码 int iLineIndex = -1; iLineIndex = LineFromChar(pSelChange->chrg.cpMax); if (iLineIndex != -1 && iLineIndex < (int)m_vecLineInfo.size()) { CHARRANGE LineStartSel; LineInfo* pInfo = &m_vecLineInfo[iLineIndex]; switch (pSelChange->seltyp) { case 0://鼠标点击在某处文本的某个sel中 { //开始存储此行的选择sel起始位置 m_StartSel = pSelChange->chrg; break; } case CBN_EDITCHANGE://鼠标左键按住拖动选择文本 { //通过m_StartSel算出本行的选择起始位置 CPoint point = PosFromChar(m_StartSel.cpMin);//算出sel处于控件内坐标 int x = point.x; point.y = pInfo->m_yPos;//替换上本行的y坐标 LineStartSel.cpMin = CharFromPos(point);//算出本行起始位置 LineStartSel.cpMax = LineStartSel.cpMin; point = PosFromChar(LineStartSel.cpMin); if (point.x < x - 5) { //outputdebug_default("行号:%d 检测到起始位置异常,和原位差太远", iLineIndex); LineStartSel.cpMin = 0; LineStartSel.cpMax = 0; if (point.x > m_rcWnd.Width()) { m_pHScroll->SetScrollPos(point.x - m_rcWnd.Width());//通知滚动条 } else { m_pHScroll->SetScrollPos(0); } } if (pSelChange->chrg.cpMax > LineStartSel.cpMax) { //outputdebug_default("行号:%d 从左向右选择文本: %d", iLineIndex, pSelChange->chrg.cpMax); CString str; GetTextRange(pInfo->m_dwHead, pSelChange->chrg.cpMax, str); int len = str.GetLength(); if (--len > -1 && len < (int)pInfo->m_dwStrLen) { //outputdebug_default("行号:%d, 当前光标所占像素: %d", iLineIndex, pInfo->m_pDx[len]); int pix = pInfo->m_pDx[len]; if (pix > m_rcWnd.Width()) { //outputdebug_default("行号:%d, 当前光标所占像素超出控件长度: %d", iLineIndex, pix); m_pHScroll->SetScrollPos(pix - m_rcWnd.Width());//通知滚动条 } } else { if (--len > -1 && pInfo->m_dwStrLen == 0) { //此行末尾没有/r回车符 CPoint point = PosFromChar(pSelChange->chrg.cpMax); if (point.x > m_rcWnd.Width()) { m_pHScroll->SetScrollPos(point.x - m_rcWnd.Width());//通知滚动条 } else { m_pHScroll->SetScrollPos(0); } } else { int i = 0; } } } else if (pSelChange->chrg.cpMax != pInfo->m_dwHead) { //outputdebug_default("行号:%d 从右向左选择文本: head:%d start:%d, min:%d max:%d", iLineIndex, pInfo->m_dwHead, LineStartSel.cpMax, pSelChange->chrg.cpMin, pSelChange->chrg.cpMax); if (pSelChange->chrg.cpMin == pInfo->m_dwHead) { m_pHScroll->SetScrollPos(0); } } else { //outputdebug_default("x行号:%d 从右向左选择文本: head:%d start:%d, min:%d max:%d", iLineIndex, pInfo->m_dwHead, LineStartSel.cpMax, pSelChange->chrg.cpMin, pSelChange->chrg.cpMax); if (pInfo->m_dwHead == pSelChange->chrg.cpMax)//本行头部和上一行行尾重复,定位回上一行 { if (--iLineIndex > -1) { pInfo = &m_vecLineInfo[iLineIndex]; CString str; GetTextRange(pInfo->m_dwHead, pSelChange->chrg.cpMax, str); int len = str.GetLength(); //outputdebug_default("行号:%d, 当前光标所占像素: %d len:%d", iLineIndex, pInfo->m_pDx[len-2], len); if (--len > -1 && len <= (int)pInfo->m_dwStrLen) { int pix = pInfo->m_pDx[len-1]; if (pix > m_rcWnd.Width()) { //outputdebug_default("行号:%d, 当前光标所占像素超出控件长度: %d", iLineIndex, pix); //m_pHScroll->SetScrollPos(pix - m_rcWnd.Width());//通知滚动条 } } } } } break; } } } //outputdebug_default("min:%d max:%d", pSelChange->chrg.cpMin, pSelChange->chrg.cpMax); *pResult = 0; } void Console::OnEnMsgfilter(NMHDR* pNMHDR, LRESULT* pResult) { MSGFILTER* pMsgFilter = reinterpret_cast<MSGFILTER*>(pNMHDR); // TODO: 控件将不发送此通知，除非您重写 // CRichEditCtrl::OnInitDialog() 函数，以将 EM_SETEVENTMASK 消息发送 // 到该控件，同时将 ENM_KEYEVENTS 或 ENM_MOUSEEVENTS 标志 //“或”运算到 lParam 掩码中。 // TODO: 在此添加控件通知处理程序代码 switch(pMsgFilter->msg) { case WM_MOUSEMOVE: { /* if (pMsgFilter->wParam == MK_LBUTTON) { int xPos = GET_X_LPARAM(pMsgFilter->lParam); int yPos = GET_Y_LPARAM(pMsgFilter->lParam); //outputdebug_default("x: %d, y:%d",xPos, yPos); if (m_bIsCapture) { if (xPos > m_iStartPos_x) { //outputdebug_default("正在从左向右选择文本."); } else { //outputdebug_default("正在从右向左选择文本."); } m_iPrePos_x = xPos; } }*/ if (!m_bIsTrack) { m_bIsTrack = TRUE; TRACKMOUSEEVENT tme; tme.cbSize = sizeof(tme); tme.hwndTrack = m_hWnd; tme.dwFlags = TME_LEAVE | TME_HOVER; tme.dwHoverTime = 1;// 鼠标在按钮上停留超过 1ms ，才认为成功 _TrackMouseEvent(&tme); } break; } case WM_LBUTTONDOWN: { if (pMsgFilter->wParam == MK_LBUTTON) { int xPos = GET_X_LPARAM(pMsgFilter->lParam); int yPos = GET_Y_LPARAM(pMsgFilter->lParam); m_iPrePos_x = xPos; m_iStartPos_x = xPos; m_bIsCapture = TRUE; //outputdebug_default("x: %d, y:%d", xPos, yPos); } break; } case WM_LBUTTONUP: { if (pMsgFilter->wParam == MK_LBUTTON) { m_bIsCapture = FALSE; } break; } } *pResult = 0; } void Console::OnMouseLeave() { // TODO: 在此添加消息处理程序代码和/或调用默认值 m_bIsTrack = FALSE; ::SetCursor(AfxGetApp()->LoadStandardCursor(IDC_ARROW)); CRichEditCtrl::OnMouseLeave(); } void Console::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) { // TODO: 在此添加消息处理程序代码和/或调用默认值 CRichEditCtrl::OnVScroll(nSBCode, nPos, pScrollBar); }
07-02
std::lock_guard<std::mutex> lock(m_bufferMutex); // 处理颜色控制字符 if (!text.empty() && text[0] == '\x1E') { if (text.size() >= 2) { auto it = m_colorMap.find(static_cast<ConsoleColor>(text[1...
// 创建子对话框 // 子对话框成员变量 CDialog1 * m_dlg1; CDialog2 * m_dlg2; CDialog* m_pCurrentDlg; // 当前显示的子对话框指针 m_dlg1->Create(IDD_DIALOG1, this); m_dlg2->Create(IDD_DIALOG2, this); // 其他初始化... // 初始显示第一个对话框 m_pCurrentDlg = m_dlg1; m_dlg1->ShowWindow(SW_SHOW); m_dlg2->ShowWindow(SW_HIDE);运行报错引发了异常: 读取访问权限冲突。 this->m_dlg1 是 nullptr。
10-12
m_dlg1->Create(IDD_CHILD_DIALOG, this)) { AfxMessageBox(_T("Failed to create child dialog")); delete m_dlg1; m_dlg1 = nullptr; return; } m_dlg1->ShowWindow(SW_SHOW); } } ``` #### 3. 在适当的...
void CGJ_Client::OnDblClickList(NMHDR* pNMHDR, LRESULT* pResult) { LPNMITEMACTIVATE pItem = reinterpret_cast<LPNMITEMACTIVATE>(pNMHDR); if (pItem->iItem >= 0 && pItem->iSubItem >= 0) { m_editRow = pItem->iItem; m_editCol = pItem->iSubItem; // 取得单元格矩形 CRect rcSubItem; m_listCtrl.GetSubItemRect(m_editRow, m_editCol, LVIR_LABEL, rcSubItem); // 设置编辑框文本、字体、位置 CString strOld = m_listCtrl.GetItemText(m_editRow, m_editCol); m_editCtrl.SetWindowText(strOld); m_editCtrl.SetFont(m_listCtrl.GetFont()); m_editCtrl.MoveWindow(&rcSubItem); m_editCtrl.ShowWindow(SW_SHOW); m_editCtrl.SetFocus(); m_editCtrl.SetSel(0, -1); // 全选 } *pResult = 0; } 在V6.0 MFC中，此函数弹出的编辑框位置，不是原控件位置，我需要弹窗的编辑框在与原来控件的位置相同
最新发布
11-08
pParent->ScreenToClient(&rectItem); // 然后创建编辑框，并设置位置在rectItem处 CEdit* pEdit = new CEdit; pEdit->Create(WS_CHILD|WS_VISIBLE|WS_BORDER, rectItem, pParent, IDC_EDIT); pEdit->SetFocus...
// 地籍宗地图参数设置 class CDJZDTSetupChildPage : public CXTPPropertyPage; // 绘制地物参数设置 class CRuoHaiDrawDwSetupChildPage : public CXTPPropertyPage ////////////////////////////////////////////////////////////////////////// struct DiaLogSetUpTreeNode { CString caption; std::vector<CString> children; }; class CCategoriesTreeNavigator : public CXTPPropertyPageTreeNavigator { public: // 构造函数，支持传入树视图样式 CCategoriesTreeNavigator(DWORD dwStyle = TVS_SHOWSELALWAYS | TVS_HASBUTTONS | TVS_HASLINES | TVS_LINESATROOT) : CXTPPropertyPageTreeNavigator(dwStyle) { } CCategoriesTreeNavigator(const CString& NodeName, DWORD dwStyle = TVS_SHOWSELALWAYS | TVS_HASBUTTONS | TVS_HASLINES | TVS_LINESATROOT) : CXTPPropertyPageTreeNavigator(dwStyle) { } CCategoriesTreeNavigator(std::vector<CString> TreeNodes, DWORD dwStyle = TVS_SHOWSELALWAYS | TVS_HASBUTTONS | TVS_HASLINES | TVS_LINESATROOT) : CXTPPropertyPageTreeNavigator(dwStyle) { } CCategoriesTreeNavigator(std::vector<DiaLogSetUpTreeNode> TreeNode, DWORD dwStyle = TVS_SHOWSELALWAYS | TVS_HASBUTTONS | TVS_HASLINES | TVS_LINESATROOT) : CXTPPropertyPageTreeNavigator(dwStyle) { } /// <summary> /// 添加单个节点 /// </summary> /// <param name="NodeName"></param> /// <returns></returns> BOOL CreateTree(const CString& NodeName) { if (NodeName == _T("")) { return FALSE; } HTREEITEM hItemOptions = InsertItem(NodeName); for (int i = 0; i < m_pSheet->GetPageCount(); i++) { CXTPPropertyPage* pPage = m_pSheet->GetPage(i); CString strCaption = pPage->GetCaption(); HTREEITEM hItem = InsertItem(strCaption, -1, -1, hItemOptions); SetItemData(hItem, (DWORD_PTR)pPage); pPage->m_dwData = (DWORD_PTR)hItem; } return TRUE; } BOOL CreateTree(const std::vector<CString>& TreeNodes) { if (TreeNodes.size() < 0) { return FALSE; } ASSERT(m_pSheet->GetPageCount() == TreeNode.size()); for (size_t i = 0; i < TreeNodes.size(); ++i) { CString rootName = TreeNodes[i]; // 根节点标题 CreateTree(rootName); } return TRUE; } /// <summary> /// 添加多个节点 /// </summary> /// <param name="TreeNode"></param> /// <returns></returns> BOOL CreateTree(const std::vector<DiaLogSetUpTreeNode>& TreeNode) { if (TreeNode.size() < 0) { return FALSE; } ASSERT(m_pSheet->GetPageCount() == TreeNode.size()); for (size_t i = 0; i < TreeNode.size(); ++i) { DiaLogSetUpTreeNode element = TreeNode[i]; // 显式声明类型为 std::pair CString rootName = element.caption; // 根节点标题 std::vector<CString> subNodes = element.children; // 子节点标题 // 插入根节点 HTREEITEM hRoot = InsertItem(rootName); // 遍历子节点 for (size_t j = 0; j < subNodes.size(); ++j) { const CString& subNodeName = subNodes[j]; // // 插入子节点 HTREEITEM hSubNode = InsertItem(subNodeName, -1, -1, hRoot); CXTPPropertyPage* pPage = m_pSheet->GetPage(i); SetItemData(hSubNode, (DWORD_PTR)pPage); // 设置子节点数据 pPage->m_dwData = (DWORD_PTR)hSubNode; } } return TRUE; } BOOL CreateTree() { CreateTree(TreeNode_); return TRUE; } public: std::vector<DiaLogSetUpTreeNode> TreeNode_; }; ////////////////////////////////////////////////////////////////////////// class CDeepMapSetUpPropSheetPaletteWnd : public CXTPCommandBarsSiteBase<CWnd> { public: CDeepMapSetUpPropSheetPaletteWnd(); void SetBshow(bool bshow); //修改成员b_show bool GetBshow(); //获取成员b_show static void LoadSetUpPale(); static void UnLoadSetUpPale(); static void RegistrationHotkeysAltAnd6();//注册热键 Alt+6 static void UnRegistrationHotkeysAltAnd6();//卸载arx程序前卸载钩子函数 protected: DECLARE_DYNCREATE(CDeepMapSetUpPropSheetPaletteWnd) public: CCategoriesTreeNavigator* pTreeNavigator_; // 导航器指针 CXTPPropertySheet* pCustomPropSheet_; // 自定义属性表指针 CDJZDTSetupChildPage* mDjzdtChildPage_; CRuoHaiDrawDwSetupChildPage* mDrawDwChildPage_; UINT m_nRibbonStyle; bool isShow_;//是否显示了 // 客户区矩形 CRect rect_; public: virtual void OnInitialUpdate(); protected: virtual ~CDeepMapSetUpPropSheetPaletteWnd(); virtual BOOL PreCreateWindow(CREATESTRUCT& cs); virtual void OnDraw(CDC* pDC); virtual void PostNcDestroy(); protected: afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct); // 用于客户区绘制 afx_msg void OnPaint(); // 用于非客户区绘制 afx_msg void OnNcPaint(); afx_msg void OnSize(UINT nType, int cx, int cy); afx_msg BOOL OnEraseBkgnd(CDC* pDC); afx_msg void OnDestroy(); afx_msg void OnSetFocus(CWnd* pOldWnd); afx_msg void OnClose(); DECLARE_MESSAGE_MAP() }; ///////////////////////////////////////////////////////////////////////////// // CDeepMapSetUpPropSheetPaletteWnd IMPLEMENT_DYNCREATE(CDeepMapSetUpPropSheetPaletteWnd, CWnd) BEGIN_MESSAGE_MAP(CDeepMapSetUpPropSheetPaletteWnd, CWnd) ON_WM_PAINT() ON_WM_NCPAINT() ON_WM_SIZE() ON_WM_ERASEBKGND() ON_WM_SETFOCUS() ON_WM_DESTROY() ON_WM_CLOSE() ON_WM_CREATE() END_MESSAGE_MAP() CDeepMapSetUpPropSheetPaletteWnd::CDeepMapSetUpPropSheetPaletteWnd() { isShow_ = false; mDrawDwChildPage_ = new CRuoHaiDrawDwSetupChildPage(); mDjzdtChildPage_ = new CDJZDTSetupChildPage(); } CDeepMapSetUpPropSheetPaletteWnd::~CDeepMapSetUpPropSheetPaletteWnd() { } void CDeepMapSetUpPropSheetPaletteWnd::SetBshow(bool bshow) { isShow_ = bshow; } bool CDeepMapSetUpPropSheetPaletteWnd::GetBshow() { return isShow_; } void CDeepMapSetUpPropSheetPaletteWnd::LoadSetUpPale() { CRuoHaiFreeReleaseFile* reFile = new CRuoHaiFreeReleaseFile(); reFile->MakeFileOutfromResource(); reFile->MakeGdalFileOutfromResource(); CString strVS2015DLL; strVS2015DLL = reFile->ThirdPartyPath_; strVS2015DLL += _T("\\VisualStudio2015.dll"); if (!CHyFile::IsFileExist(strVS2015DLL)) { //VS2015dllproject->MakeVisualStudioDllFromRes(); AfxMessageBox(strVS2015DLL + _T("文件不存在！")); } g_hModuleVisualStudio2015.LoadLibrary(strVS2015DLL); // TODO: Add your initialization code here if (g_pSetUpPaneManager == NULL) { CRect rect = CRect(0, 0, 420, 300); CMDIFrameWnd* pAcadFrame = acedGetAcadFrame(); g_pSetUpPaneManager = new CXTPDockingPaneManager; g_pSetUpPaneManager->InstallDockingPanes(pAcadFrame); XTPResourceImages()->SetHandle(g_hModuleVisualStudio2015, xtpIniVisualStudio2015Dark); g_pSetUpPaneManager->SetTheme(xtpPaneThemeVisualStudio2015); g_pSetUpWndPane = g_pSetUpPaneManager->CreatePane(IDR_PANE, XTP_DPI(rect), xtpPaneDockLeft); g_pSetUpPaletteWnd = new CDeepMapSetUpPropSheetPaletteWnd; g_pSetUpPaletteWnd->Create(_T("STATIC"), NULL, WS_CHILD, rect, pAcadFrame, 0); ((CDeepMapSetUpPropSheetPaletteWnd*)g_pSetUpPaletteWnd)->OnInitialUpdate(); g_pSetUpWndPane->Attach(g_pSetUpPaletteWnd); g_pSetUpWndPane->SetTitle(_T("SETUP")); // 窗格的布局 CXTPDockingPaneLayout layoutNormal(g_pSetUpPaneManager); if (layoutNormal.Load(_T("NormalLayout"))) { g_pSetUpPaneManager->SetLayout(&layoutNormal); g_pSetUpPaneManager->RecalcFramesLayout(); } // 拖动窗格时可以停靠的位置 g_pSetUpPaneManager->SetAlphaDockingContext(TRUE); // 在拖动对接窗格时使用Visual Studio 2005样式对接上下文贴纸 g_pSetUpPaneManager->SetShowDockingContextStickers(TRUE); g_pSetUpPaneManager->SetShowContentsWhileDragging(TRUE); // 调用此成员在拖动时设置“显示窗口内容”选项 //pPaneManager->SetDefaultPaneOptions(xtpPaneHasMenuButton); g_pSetUpPaneManager->SetThemedFloatingFrames(FALSE); delete reFile; reFile = NULL; } delete reFile; reFile = NULL; } void CDeepMapSetUpPropSheetPaletteWnd::UnLoadSetUpPale() { if (g_pSetUpPaletteWnd) { delete g_pSetUpPaletteWnd; g_pSetUpPaletteWnd = NULL; } if (g_pSetUpPaneManager) { delete g_pSetUpPaneManager; g_pSetUpPaneManager = NULL; acedGetAcadFrame()->RecalcLayout(); } ////将焦点放在当前视图 //acedGetAcadDwgView()->SetFocus(); //acDocManager->lockDocument(curDoc()); //acDocManager->sendStringToExecute(curDoc(), _T("UNote "), false, true, false); //acDocManager->unlockDocument(curDoc()); } void CDeepMapSetUpPropSheetPaletteWnd::RegistrationHotkeysAltAnd6() { if (BRegiHotCtrl6Ok) { if (acDocManager->curDocument() != NULL) { acutPrintf(_T("\n%s 热键已经注册了。\n"), Str_HOTKEY_ALT_6); //如果钩子已经注册，则返回 } return; } if (acedRegisterWatchWinMsg(WatchAltAnd6) == FALSE) { if (acDocManager->curDocument() != NULL) { acutPrintf(_T("\n%s 热键注册失败。\n"), Str_HOTKEY_ALT_6); //无法注册钩子 } } else { if (acDocManager->curDocument() != NULL) { acutPrintf(_T("\n%s 热键注册成功,此热键是打开关闭DeepMap停靠面板。\n"), Str_HOTKEY_ALT_6); //快捷命令已经定义 } BRegiHotCtrl6Ok = true; } return; } //卸载arx程序前卸载钩子函数 void CDeepMapSetUpPropSheetPaletteWnd::UnRegistrationHotkeysAltAnd6() { if (BRegiHotCtrl6Ok == true) { acedRemoveWatchWinMsg(WatchAltAnd6); acutPrintf(_T("\n%s 热键卸载成功。\n"), Str_HOTKEY_ALT_6); } } BOOL CDeepMapSetUpPropSheetPaletteWnd::PreCreateWindow(CREATESTRUCT& cs) { cs.style |= WS_CLIPSIBLINGS | WS_CLIPCHILDREN; return CWnd::PreCreateWindow(cs); } void CDeepMapSetUpPropSheetPaletteWnd::OnDraw(CDC* pDC) { } void CDeepMapSetUpPropSheetPaletteWnd::OnPaint() { CPaintDC dc(this); } void CDeepMapSetUpPropSheetPaletteWnd::OnNcPaint() { // TODO: 在此处添加消息处理程序代码 // 不为绘图消息调用 CXTPCommandBarsSiteBase::OnNcPaint() } int CDeepMapSetUpPropSheetPaletteWnd::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CWnd::OnCreate(lpCreateStruct) == -1) return -1; CAcModuleResourceOverride resourceOverride; /*if (!mChildDlg.Create(IDD_DrawDwSETUP_DIALOG, this)) { acedAlert(_T("创建对话框失败!\n")); return -1; } mChildDlg.ShowWindow(SW_SHOW); mChildDlg.MoveWindow(0, 0, 50, 100, TRUE);*/ if (!mDjzdtChildPage_->CXTPPropertyPage::Create(IDD_DJZDT_SETUP_DIALOG, this)) { acedAlert(_T("创建对话框失败!\n")); return -1; } mDjzdtChildPage_->ShowWindow(SW_SHOW); mDjzdtChildPage_->MoveWindow(0, 0, 50, 100, TRUE); if (!mDrawDwChildPage_->CXTPPropertyPage::Create(IDD_DrawDwSETUP_DIALOG, this)) { acedAlert(_T("创建对话框失败!\n")); return -1; } mDrawDwChildPage_->ShowWindow(SW_SHOW); mDrawDwChildPage_->MoveWindow(0, 0, 50, 100, TRUE); return 0; } void CDeepMapSetUpPropSheetPaletteWnd::OnInitialUpdate() { // 初始化命令栏 if (!InitCommandBars()) { TRACE0("初始化命令栏失败!\n"); return; } CXTPCommandBars* pCommandBars = GetCommandBars(); if (pCommandBars == NULL) { TRACE0("创建命令栏对象失败!\n"); return; } CXTPPaintManager::SetTheme(xtpThemeVisualStudio2015); XTPResourceImages()->SetHandle(g_hModuleVisualStudio2015, xtpIniVisualStudio2015Dark); pCommandBars->GetCommandBarsOptions()->ShowKeyboardCues(xtpKeyboardCuesShowWindowsDefault); pCommandBars->GetCommandBarsOptions()->bShowExpandButtonAlways = FALSE; pCommandBars->GetPaintManager()->m_bAutoResizeIcons = TRUE; pCommandBars->GetCommandBarsOptions()->SetDPIScallingOptions(TRUE); LoadCommandBars(_T("CommandBars")); RepositionBars(0, 0xffff, AFX_IDW_PANE_FIRST, reposDefault); std::vector<CString> TreeNodes; TreeNodes.push_back(_T("地物绘制设置")); TreeNodes.push_back(_T("地籍宗地图设置")); pCustomPropSheet_ = new CXTPPropertySheet(_T("CXTPPropertyPageTreeNavigator Sample")); pTreeNavigator_ = new CCategoriesTreeNavigator(TreeNodes); pCustomPropSheet_->SetNavigator(pTreeNavigator_); pCustomPropSheet_->m_psh.dwFlags |= PSH_NOAPPLYNOW; pCustomPropSheet_->AddPage(mDjzdtChildPage_); pCustomPropSheet_->AddPage(mDrawDwChildPage_); pCustomPropSheet_->SetResizable(); pTreeNavigator_->CreateTree(TreeNodes); } void CDeepMapSetUpPropSheetPaletteWnd::OnSize(UINT nType, int cx, int cy) { CWnd::OnSize(nType, cx, cy); CRect rcClient(0, 0, cx, cy); RepositionBars(0, 0xffff, AFX_IDW_PANE_FIRST, 0, 0, &rcClient); RepositionBars(0, 0xffff, AFX_IDW_PANE_FIRST, reposQuery, &rcClient, &rcClient); if (mDrawDwChildPage_->GetSafeHwnd()) { mDrawDwChildPage_->MoveWindow(rcClient); } if (mDjzdtChildPage_->GetSafeHwnd()) { mDjzdtChildPage_->MoveWindow(rcClient); } } BOOL CDeepMapSetUpPropSheetPaletteWnd::OnEraseBkgnd(CDC* pDC) { return TRUE; } void CDeepMapSetUpPropSheetPaletteWnd::OnSetFocus(CWnd* /*pOldWnd*/) { } void CDeepMapSetUpPropSheetPaletteWnd::OnDestroy() { CWnd::OnDestroy(); // TODO: 在此处添加消息处理程序代码 } void CDeepMapSetUpPropSheetPaletteWnd::OnClose() { // Save the current state for command bars. SaveCommandBars(_T("CommandBars")); CWnd::OnClose(); } void CDeepMapSetUpPropSheetPaletteWnd::PostNcDestroy() { // TODO: 在此添加专用代码和/或调用基类 CWnd::PostNcDestroy(); } 我想实现树形控件的效果，但是这个代码把两个对话框都Create出来重叠在一起了没有到达树形控件点击切换对话框的效果
06-20
上述代码中，`m_pCurrentPage->DestroyWindow()` 和 `delete m_pCurrentPage` 确保了旧的对话框页面被正确清理[^1]。 --- ### 注意事项 - 确保每个对话框页面都有唯一的资源 ID（如 `IDD_PAGE1_DIALOG` 和 `IDD_...
请根据我提供的滚动条控件源码，重构一个更高效的控件给我 #ifndef _SCROLL_BAR_H_ #define _SCROLL_BAR_H_ #include "BaseWnd/CBaseWnd.h" class ScrollBar : public MFC::CBaseWnd { public: ScrollBar(); ~ScrollBar(); BOOL Create(const int _iBar, const CRect& _Rect, CWnd* _pParent, const int _iArrowFlags = ESB_ENABLE_BOTH, const int _iSpace = 3, const int _iMinSlider = 10); BOOL SetScrollInfo(SCROLLINFO& _refScrollInfo, BOOL _bRedraw = TRUE); BOOL SetScrollPos(int _iPos, BOOL _bRedraw = TRUE); void SetTarget(CWnd* _pTargetWnd); private: int m_iBar; //此滚动条的风格: SB_HORZ = 水平横向滚动条, SB_VERT = 垂直纵向滚动条 int m_iSpace; //滚动条滑块通道两边的空白间隔 int m_iMinSlider; //滑块的最小宽度,不可能无限小吧,滑块过小了肉眼都难看到了 int m_iArrowFlags; //两边是否开启箭头 float m_fRatio; //比率: 如: 滚动条滚动 1pixl, 目标控件该移动多少 pix? 或者反过来,目标控件移动了10pix , 那么滚动条应该移动多少pix? CRect m_rcLTUP; //滚动条(左边/顶部)的箭头范围 3个范围组成完整的滚动条 CRect m_rcScroll; //滚动条通道的范围 3个范围组成完整的滚动条 CRect m_rcRTDN; //滚动条(右边/底部)的箭头范围 3个范围组成完整的滚动条 SCROLLINFO m_infoScroll; //滚动条的信息 这2个info是相互关联依赖 SCROLLBARINFO m_infoScrollBar; //滚动条的滑块信息 这2个info是相互关联依赖 //以下解释2个info的关联性 /* typedef struct tagSCROLLINFO { UINT cbSize; //size of(SCROLLINFO) UINT fMask; //SIF_ALL 即nMin, nMax, nPage, nPos, nTrackPos 5个变量值都得到更改 int nMin; //一般置 0 int nMax; //目标控件的最大可见内容, 比如我的目标控件宽度: 666 pix, 控件内有一行文字内容,此行文字占:977 pix, 那么此行内容就有: 977-666 pix内容是看不到了,那么最大可见内容nMax=977 UINT nPage; //目标控件的宽度: 666 pix, 一般一行文字的最前面和最后面都有一个占1pix的光标,正如我们打字那个光标一样, 666-2pix = 664, 那么nPag = 664 int nPos; //这里我预设为: 29, 最下面会给出这个29的计算方法 int nTrackPos; //这个值是以前旧nPos, 等更新完成后，也会变成29 } SCROLLINFO, FAR* LPSCROLLINFO; */ /* typedef struct tagSCROLLBARINFO { DWORD cbSize; //size of(SCROLLBARINFO) RECT rcScrollBar; //滚动条的全部范围: 我预设此滚动条是: 666*17 pix, 水平横向滚动条，两头带17 pix的箭头按钮 int dxyLineButton; //滚动条2头的箭头宽度: 17pix int xyThumbTop; //滑块左边位于滚动条的位置, 这里是36 pix 这个36 pix和上面的nPos 29pix是有关联性的 int xyThumbBottom; //滑块右边位于滚动条的位置, 这里是465 pix, 那么这个滚动条中间滑块的宽度就是: 465-36 int reserved; //windows预留位置,不用管 DWORD rgstate[CCHILDREN_SCROLLBAR + 1]; //当滚动可见,这里全部为0, 可视状态开关 } SCROLLBARINFO, * PSCROLLBARINFO, * LPSCROLLBARINFO; */ /*　 * xyThumbTop = 36 计算出　nPos = 29 : * xyThumbTop-17 = 36-17 = 19pix, 先去除左边箭头的宽度得到真实: 当前滚动条已经滚动的距离 * 计算比率: 滚动条的长度/目标控件的最大可见内容 = (666-(17*2))/977 = 0.6468781 (17*2)是去掉2个箭头距离 * xyThumbTop / 比率 = 19/0.6468781 = 29.37183991 = (int)29 = nPos = 29 * nPos逆向计算xyThumbTop = 29*0.6468781 = 19 * 总结: SCROLLBARINFO信息控制滚动条内部信息，SCROLLINFO控制外部目标控件的信息 */ CRect m_rcSlider; //滚动条内滑块的范围 COLORREF m_clrSlider; //滑块的状态颜色 COLORREF m_clrSlider_Def; //滑块无操作状态下的颜色 COLORREF m_clrSlider_Hover; //鼠标悬停在滑块上面的颜色 COLORREF m_clrSlider_Click; //鼠标左键按下滑块的颜色 BOOL m_bIsTrack; //鼠标触发WM_MOUSEMOVE一次就触发一次鼠标悬停?明显太浪费了，所以这个bIsTrack控制,确保已经触发完成鼠标悬停事件再重置bIsTrack BOOL m_bIsCaptrue; //监视这个控件是不是正在 捕获焦点 中 CPoint m_ptMouseLastPoint; //鼠标移动: 从A点移动到B点, m_ptMouseLastPoint代表A点(存储), B点在WM_MOUSEMOVE事件能得到 int m_iLTUPBtn; //(左边/顶部)箭头的(宽度/长度) int m_iRTDNBtn; //(右边/底部)箭头的(宽度/长度) CRgn m_rgnLTUPBtn; //(左边/顶部)三角形箭头的绘画路径 CRgn m_rgnRTDNBtn; //(右边/底部)三角形箭头的绘画路径 COLORREF m_clrArrow; //箭头的状态颜色 COLORREF m_clrArrow_Def; //箭头无操作状态颜色 COLORREF m_clrArrow_Hover; //鼠标悬停在箭头上的颜色 COLORREF m_clrArrow_Click; //鼠标左键按下箭头的颜色 BOOL m_bIsEnd; //当前滚动条已经达到尽头 CWnd* m_pTargetWnd; //关联的目标控件 float m_fCorrectionLT; //补正(左箭头/顶部箭头)移动距离 float m_fCorrectionRD; //补正(右箭头/底部箭头)移动距离 public: DECLARE_MESSAGE_MAP() afx_msg void OnPaint(); afx_msg void OnMouseMove(UINT nFlags, CPoint point); afx_msg void OnMouseHover(UINT nFlags, CPoint point); afx_msg void OnMouseLeave(); afx_msg void OnLButtonDown(UINT nFlags, CPoint point); afx_msg void OnLButtonUp(UINT nFlags, CPoint point); afx_msg void OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar); afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar); virtual void OnMouseLeave(const CPoint& _point); virtual void OnDragSlider(const CPoint& _point); virtual void OnClickLTUPBtn();//点击了(左箭头/顶部箭头) virtual void OnClickRTDNBtn();//点击了(右箭头/底部箭头) }; #endif#include "ScrollBar.h" ScrollBar::ScrollBar(): m_iBar(0), m_iSpace(0), m_iMinSlider(0), m_iArrowFlags(ESB_ENABLE_BOTH), m_fRatio(0.0f), m_bIsTrack(FALSE), m_bIsCaptrue(FALSE), m_iLTUPBtn(0), m_iRTDNBtn(0), m_bIsEnd(FALSE), m_pTargetWnd(NULL), m_fCorrectionLT(0.0f), m_fCorrectionRD(0.0f) { //初始化一些基本结构 m_rcLTUP = { 0, 0, 0, 0 }; m_rcScroll = {0, 0, 0, 0}; m_rcRTDN = {0, 0, 0, 0}; memset(&m_infoScroll, 0, sizeof m_infoScroll); m_infoScroll.cbSize = sizeof m_infoScroll; memset(&m_infoScrollBar, 0, sizeof m_infoScrollBar); m_infoScrollBar.cbSize = sizeof m_infoScrollBar; m_rcSlider = { 0,0,0,0 }; m_clrSlider_Def = RGB(104, 104, 104); m_clrSlider_Hover = RGB(158, 158, 158); m_clrSlider_Click = RGB(239, 235, 239); m_clrSlider = m_clrSlider_Def; m_ptMouseLastPoint = { 0,0 }; m_clrArrow_Def = RGB(104, 104, 104); m_clrArrow_Hover = RGB(158, 158, 158); m_clrArrow_Click = RGB(239, 235, 239); m_clrArrow = m_clrArrow_Def; } ScrollBar::~ScrollBar() { //箭头路径销毁: windwos要求释放资源 m_rgnLTUPBtn.DeleteObject(); m_rgnRTDNBtn.DeleteObject(); } BOOL ScrollBar::Create(const int _iBar, const CRect& _Rect, CWnd* _pParent, const int _iArrowFlags, const int _iSpace, const int _iMinSlider) { //准备滚动条数据 m_iBar = _iBar; //存储滚动条风格: SB_HORZ=水平横向滚动条; SB_VERT=垂直纵向滚动条 m_iSpace = _iSpace; //存储滚动条滑块两边空白间隔 m_iArrowFlags = _iArrowFlags; //存储滚动条的箭头开关值: 0=两个都开启; 1=(左边/顶部)的箭头关闭; 2=(右边/底部)的箭头关闭; 3=两个都关闭 m_iMinSlider = _iMinSlider; //存储滚动条滑块的最小(宽度/长度),不可能无限短,太短肉眼都看不见了 CRect recWnd = { 0, 0, 0,0 }; if (CBaseWnd::Create("scroll bar", _Rect, _pParent, NULL, WS_CHILD | WS_VISIBLE))//创建控件 { //控件创建成功 m_infoScrollBar.rcScrollBar = {0, 0, _Rect.Width(), _Rect.Height()};//设置滚动条所占此控件的范围,一般是全部 recWnd = m_infoScrollBar.rcScrollBar; switch (_iBar) { case SB_HORZ: m_infoScrollBar.dxyLineButton = _Rect.Height();//如果是水平滚动条, 箭头按钮长度就是控件的宽度 break; case SB_VERT: m_infoScrollBar.dxyLineButton = _Rect.Width();//如果是垂直滚动条, 箭头按钮的宽度就是控件的长度 break; } switch (_iArrowFlags) { case ESB_ENABLE_BOTH://2个箭头都开启 m_iLTUPBtn = m_infoScrollBar.dxyLineButton; m_iRTDNBtn = m_infoScrollBar.dxyLineButton; break; case ESB_DISABLE_LTUP://关闭(左边/顶部)的箭头 m_iLTUPBtn = 0; m_iRTDNBtn = m_infoScrollBar.dxyLineButton; break; case ESB_DISABLE_RTDN://关闭(右边/底部)的箭头 m_iLTUPBtn = m_infoScrollBar.dxyLineButton; m_iRTDNBtn = 0; break; case ESB_DISABLE_BOTH://2个箭头都关闭 m_iLTUPBtn = 0; m_iRTDNBtn = 0; break; } switch (_iBar) { case SB_HORZ: { m_infoScroll.nMax = _Rect.Width();//初始化目标控件里面的内容最大可视范围 m_infoScroll.nPage = _Rect.Width();//初始化目标控件的最大范围 m_rcSlider = { recWnd.left + m_iLTUPBtn, recWnd.top + m_iSpace, recWnd.right - m_iRTDNBtn, recWnd.bottom - m_iSpace };//初始化滑块坐标范围 m_infoScrollBar.xyThumbTop = m_rcSlider.left;//滑块的左边坐标 m_infoScrollBar.xyThumbBottom = m_rcSlider.right;//滑块的右边坐标 CPoint vecPoint[3]; //绘画左边箭头三角形 vecPoint[0] = { m_iSpace+1, m_infoScrollBar.dxyLineButton / 2 }; vecPoint[1] = { m_infoScrollBar.dxyLineButton - m_iSpace*2, m_infoScrollBar.dxyLineButton - m_iSpace }; vecPoint[2] = { m_infoScrollBar.dxyLineButton - m_iSpace*2 , m_iSpace-1 }; m_rgnLTUPBtn.CreatePolygonRgn(vecPoint, 3, WINDING); //绘画右边箭头三角形 vecPoint[0] = {recWnd.Width()-(m_iSpace + 1), m_infoScrollBar.dxyLineButton / 2 }; vecPoint[1] = {recWnd.Width()- (m_infoScrollBar.dxyLineButton - m_iSpace * 2), m_infoScrollBar.dxyLineButton - m_iSpace }; vecPoint[2] = {recWnd.Width() - (m_infoScrollBar.dxyLineButton - m_iSpace * 2), m_iSpace-1 }; m_rgnRTDNBtn.CreatePolygonRgn(vecPoint, 3, WINDING); //分配范围 m_rcLTUP = { recWnd.left, recWnd.top, recWnd.left + m_iLTUPBtn, recWnd.bottom };//左箭头范围 m_rcRTDN = { recWnd.right - m_iRTDNBtn, recWnd.top, recWnd.right, recWnd.bottom };//右箭头范围 m_rcScroll = {recWnd.left+m_iLTUPBtn, recWnd.top, recWnd.right-m_iRTDNBtn, recWnd.bottom};//中间滚动条通道 m_rcSlider = {m_rcScroll.left, m_rcScroll.top+m_iSpace, m_rcScroll.right, m_rcScroll.bottom-m_iSpace}; break; } case SB_VERT: { m_infoScroll.nMax = recWnd.Height();//初始化目标控件里面的内容最大可视范围 m_infoScroll.nPage = recWnd.Height();//初始化目标控件的最大范围 m_rcSlider = {recWnd.left+m_iSpace, recWnd.top+m_iLTUPBtn, recWnd.right-m_iSpace, recWnd.bottom-m_iRTDNBtn};//初始化滑块坐标范围 m_infoScrollBar.xyThumbTop = m_rcSlider.top;//滑块顶部的坐标 m_infoScrollBar.xyThumbBottom = m_rcSlider.bottom;//滑块底部的坐标 CPoint vecPoint[3]; //绘画顶部箭头的三角形 vecPoint[0] = { m_infoScrollBar.dxyLineButton / 2 , m_iSpace }; vecPoint[1] = { m_iSpace-1, m_infoScrollBar.dxyLineButton - m_iSpace * 2 }; vecPoint[2] = { m_infoScrollBar.dxyLineButton - m_iSpace, m_infoScrollBar.dxyLineButton - m_iSpace*2 }; m_rgnLTUPBtn.CreatePolygonRgn(vecPoint, 3, WINDING); //绘画底部箭头的三角形 vecPoint[0] = { m_infoScrollBar.dxyLineButton / 2 , recWnd.Height() - m_iSpace - 1 }; vecPoint[1] = { m_iSpace , recWnd.Height() - m_infoScrollBar.dxyLineButton + m_iSpace * 2 }; vecPoint[2] = { m_infoScrollBar.dxyLineButton - m_iSpace, recWnd.Height() - m_infoScrollBar.dxyLineButton + m_iSpace * 2 }; m_rgnRTDNBtn.CreatePolygonRgn(vecPoint, 3, WINDING); //分配范围 m_rcLTUP = { recWnd.left, recWnd.top, recWnd.right, recWnd.top+m_iLTUPBtn };//上箭头范围 m_rcRTDN = { recWnd.left, recWnd.bottom - m_iRTDNBtn, recWnd.right, recWnd.bottom };//下箭头范围 m_rcScroll = { recWnd.left, recWnd.top + m_iLTUPBtn, recWnd.right, recWnd.bottom - m_iRTDNBtn };//中间滚动条通道 m_rcSlider = {m_rcScroll.left+m_iSpace, m_rcScroll.top, m_rcScroll.right-m_iSpace, m_rcScroll.bottom}; break; } } return TRUE; } return FALSE; } BEGIN_MESSAGE_MAP(ScrollBar, MFC::CBaseWnd) ON_WM_PAINT() ON_WM_MOUSEMOVE() ON_WM_MOUSEHOVER() ON_WM_MOUSELEAVE() ON_WM_LBUTTONDOWN() ON_WM_LBUTTONUP() ON_WM_HSCROLL() ON_WM_VSCROLL() END_MESSAGE_MAP() void ScrollBar::OnPaint() { CPaintDC dc(this); // device context for painting // TODO: 在此处添加消息处理程序代码 // 不为绘图消息调用 CBaseWnd::OnPaint() CBrush brush; brush.CreateSolidBrush(m_clrArrow); m_MemDC.FillSolidRect(m_rcWnd, RGB(62, 62, 66));//背景色 m_MemDC.FillSolidRect(m_rcSlider, m_clrSlider);//滑块色 if(m_iLTUPBtn) m_MemDC.FillRgn(&m_rgnLTUPBtn, &brush); if(m_iRTDNBtn) m_MemDC.FillRgn(&m_rgnRTDNBtn, &brush); brush.DeleteObject(); dc.BitBlt(0, 0, m_rcWnd.Width(), m_rcWnd.Height(), &m_MemDC, 0, 0, SRCCOPY); //更新scroll bar info数据 switch (m_iBar) { case SB_HORZ: m_infoScrollBar.xyThumbTop = m_rcSlider.left; m_infoScrollBar.xyThumbBottom = m_rcSlider.right; break; case SB_VERT: m_infoScrollBar.xyThumbTop = m_rcSlider.top; m_infoScrollBar.xyThumbBottom = m_rcSlider.bottom; break; } } void ScrollBar::OnMouseMove(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 if (!m_bIsTrack && !m_bIsCaptrue) { m_bIsTrack = TRUE; TRACKMOUSEEVENT tme; tme.cbSize = sizeof(tme); tme.hwndTrack = m_hWnd; tme.dwFlags = TME_LEAVE | TME_HOVER; tme.dwHoverTime = 1;// 鼠标在按钮上停留超过 1ms ，才认为成功 _TrackMouseEvent(&tme); } if (m_bIsCaptrue) { OnDragSlider(point); m_ptMouseLastPoint = point; } CBaseWnd::OnMouseMove(nFlags, point); } void ScrollBar::OnMouseHover(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 OnMouseLeave(m_ptMouseLastPoint); if (PtInRect(m_rcLTUP, point)) { //鼠标悬停在(左边/顶部)箭头上面 m_clrArrow = m_clrArrow_Hover; InvalidateRect(m_rcLTUP); } else if (PtInRect(m_rcRTDN, point)) { //鼠标悬停在(右边/底部)箭头上面 m_clrArrow = m_clrArrow_Hover; InvalidateRect(m_rcRTDN); } else if (PtInRect(m_rcSlider, point)) { //鼠标悬停在滑块上面 m_clrSlider = m_clrSlider_Hover; InvalidateRect(m_rcSlider); } m_ptMouseLastPoint = point; m_bIsTrack = FALSE; CBaseWnd::OnMouseHover(nFlags, point); } void ScrollBar::OnMouseLeave(const CPoint& _point) { if (PtInRect(m_rcLTUP, _point)) { //鼠标离开(左边/顶部)箭头 m_clrArrow = m_clrArrow_Def; InvalidateRect(m_rcLTUP); } else if (PtInRect(m_rcRTDN, _point)) { //鼠标离开(右边/底部)箭头 m_clrArrow = m_clrArrow_Def; InvalidateRect(m_rcRTDN); } else if (PtInRect(m_rcSlider, _point)) { //鼠标离开滑块 m_clrSlider = m_clrSlider_Def; InvalidateRect(m_rcSlider); } } void ScrollBar::OnMouseLeave() { // TODO: 在此添加消息处理程序代码和/或调用默认值 //鼠标离开控件 m_bIsTrack = FALSE; m_clrSlider = m_clrSlider_Def; m_clrArrow = m_clrArrow_Def; Invalidate(); if (m_bIsCaptrue) { ReleaseCapture(); m_bIsCaptrue = FALSE; } CBaseWnd::OnMouseLeave(); } void ScrollBar::OnLButtonDown(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 if (PtInRect(m_rcLTUP, point)) { //鼠标左键点击(左边/顶部)箭头 m_clrArrow = m_clrArrow_Click; InvalidateRect(m_rcLTUP); OnClickLTUPBtn(); } else if (PtInRect(m_rcRTDN, point)) { //鼠标左键点击(右边/底部)箭头 m_clrArrow = m_clrArrow_Click; InvalidateRect(m_rcRTDN); OnClickRTDNBtn(); } else if (PtInRect(m_rcSlider, point)) { //鼠标左键点击滑块 m_clrSlider = m_clrSlider_Click; InvalidateRect(m_rcSlider); SetCapture(); m_bIsCaptrue = TRUE; } CBaseWnd::OnLButtonDown(nFlags, point); } void ScrollBar::OnLButtonUp(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 if (PtInRect(m_rcLTUP, point)) { //鼠标左键点击(左边/顶部)箭头 后 鼠标弹起 m_clrArrow = m_clrArrow_Hover; InvalidateRect(m_rcLTUP); } else if (PtInRect(m_rcRTDN, point)) { //鼠标左键点击(右边/底部)箭头 后 鼠标弹起 m_clrArrow = m_clrArrow_Hover; InvalidateRect(m_rcRTDN); } else if (PtInRect(m_rcSlider, point)) { //鼠标左键点击滑块 后 鼠标弹起 m_clrSlider = m_clrSlider_Hover; InvalidateRect(m_rcSlider); ReleaseCapture(); m_bIsCaptrue = FALSE; if (m_infoScroll.nTrackPos != m_infoScroll.nPos)//用nPos和nTrackPos比较是否滑块滑动过,nTrackPos在拖滑块中会更新 { switch (m_iBar) { case SB_HORZ: SendMessage(WM_HSCROLL, MAKEWPARAM(SB_THUMBPOSITION, m_rcSlider.left), NULL); break; case SB_VERT: SendMessage(WM_VSCROLL, MAKEWPARAM(SB_THUMBPOSITION, m_rcSlider.top), NULL); break; } } } if (m_bIsCaptrue) { ReleaseCapture(); m_bIsCaptrue = FALSE; if (m_infoScroll.nTrackPos != m_infoScroll.nPos)//用nPos和nTrackPos比较是否滑块滑动过,nTrackPos在拖滑块中会更新 { switch (m_iBar) { case SB_HORZ: SendMessage(WM_HSCROLL, MAKEWPARAM(SB_THUMBPOSITION, m_rcSlider.left), NULL); break; case SB_VERT: SendMessage(WM_VSCROLL, MAKEWPARAM(SB_THUMBPOSITION, m_rcSlider.top), NULL); break; } } } m_bIsEnd = FALSE; CBaseWnd::OnLButtonUp(nFlags, point); } void ScrollBar::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) { // TODO: 在此添加消息处理程序代码和/或调用默认值 if (pScrollBar == NULL)//NULL说明内部发送过来信息 { switch (nSBCode) { case SB_ENDSCROLL: { //结束滚动 //_output_debug_("水平滚动结束x:%d", nPos); if (m_pTargetWnd) { m_pTargetWnd->SendMessage(WM_HSCROLL, MAKEWPARAM(SB_ENDSCROLL, m_infoScroll.nPos), (LPARAM)this); } break; } case SB_THUMBTRACK: { //正在拖动滑块 m_infoScroll.nTrackPos = int((float)nPos / m_fRatio);//使用滑块的距离逆向比率得到目标的xPos if (m_pTargetWnd) { m_pTargetWnd->SendMessage(WM_HSCROLL, MAKEWPARAM(SB_THUMBTRACK, m_infoScroll.nTrackPos), (LPARAM)this); } break; } case SB_THUMBPOSITION: { //用户已拖动滚动框（拇指）并松开鼠标按钮 //_output_debug_("水平滚动条鼠标松开滑动,目标xPos:%d", m_infoScroll.nTrackPos); m_infoScroll.nPos = m_infoScroll.nTrackPos;//最终更新用户数据 SendMessage(WM_HSCROLL, MAKEWPARAM(SB_ENDSCROLL, m_rcSlider.left-m_iLTUPBtn), NULL); break; } case SB_LINELEFT: { //向左滚动一个单位 点击左箭头 //_output_debug_("水平滚动向左滚动一个单位:%d", nPos); m_fCorrectionLT += (float)nPos / m_fRatio;//计算目标控件的滚动距离 int pos = (int)m_fCorrectionLT; m_fCorrectionLT -= (float)pos; m_infoScroll.nPos -= pos; m_infoScroll.nPos = m_infoScroll.nPos < m_infoScroll.nMin ? m_infoScroll.nMin : m_infoScroll.nPos; m_infoScroll.nTrackPos = m_infoScroll.nPos; if (m_pTargetWnd) { m_pTargetWnd->SendMessage(WM_HSCROLL, MAKEWPARAM(SB_THUMBPOSITION, m_infoScroll.nPos), (LPARAM)this); } break; } case SB_LINERIGHT: { //向右滚动一个单位 点击右箭头 //_output_debug_("水平滚动向右滚动一个单位:%d", nPos); m_fCorrectionRD += (float)nPos / m_fRatio; int pos = (int)m_fCorrectionRD; m_fCorrectionRD -= (float)pos;//把小数位单独取出来留给后面的补正 m_infoScroll.nPos += pos;//使用滑块的距离逆向比率得到目标的xPos m_infoScroll.nPos = m_infoScroll.nPos > m_infoScroll.nMax ? m_infoScroll.nMax : m_infoScroll.nPos; m_infoScroll.nTrackPos = m_infoScroll.nPos; if (m_pTargetWnd) { m_pTargetWnd->SendMessage(WM_HSCROLL, MAKEWPARAM(SB_THUMBPOSITION, m_infoScroll.nPos), (LPARAM)this); } break; } case SB_LEFT: { //滚动到左边末尾 //_output_debug_("已经滚动到左边尽头."); //if (m_pTargetWnd) m_pTargetWnd->SendMessage(WM_HSCROLL, MAKEWPARAM(SB_LEFT, 0), (LPARAM)this); break; } case SB_RIGHT: { //滚动到右边末尾 //_output_debug_("已经滚动到右边尽头."); //if (m_pTargetWnd) m_pTargetWnd->SendMessage(WM_HSCROLL, MAKEWPARAM(SB_RIGHT, m_infoScroll.nMax), (LPARAM)this); break; } } } CBaseWnd::OnHScroll(nSBCode, nPos, pScrollBar); } void ScrollBar::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) { // TODO: 在此添加消息处理程序代码和/或调用默认值 if (pScrollBar == NULL)//NULL说明内部发送过来信息 { switch (nSBCode) { case SB_ENDSCROLL: { //结束滚动 //_output_debug_("垂直滚动结束y:%d", nPos); if (m_pTargetWnd) { m_pTargetWnd->SendMessage(WM_VSCROLL, MAKEWPARAM(SB_ENDSCROLL, m_infoScroll.nPos), (LPARAM)this); } break; } case SB_THUMBTRACK: { //正在拖动滑块 m_infoScroll.nTrackPos = int((float)nPos / m_fRatio);//使用滑块的距离逆向比率得到目标的xPos if (m_pTargetWnd) { m_pTargetWnd->SendMessage(WM_VSCROLL, MAKEWPARAM(SB_THUMBTRACK, m_infoScroll.nTrackPos), (LPARAM)this); } break; } case SB_THUMBPOSITION: { //用户已拖动滚动框（拇指）并松开鼠标按钮 //_output_debug_("垂直滚动条鼠标松开滑动,目标yPos: %d", m_infoScroll.nTrackPos); m_infoScroll.nPos = m_infoScroll.nTrackPos;//最终更新用户数据 SendMessage(WM_VSCROLL, MAKEWPARAM(SB_ENDSCROLL, m_rcSlider.top-m_iLTUPBtn), NULL); break; } case SB_LINEUP: { //向上滚动了一个单位 点击顶箭头 m_fCorrectionLT += int((float)nPos / m_fRatio);//使用滑块的距离逆向比率得到目标的xPos int pos = (int)m_fCorrectionLT; m_fCorrectionLT -= (float)pos; m_infoScroll.nPos -= pos; m_infoScroll.nPos = m_infoScroll.nPos < m_infoScroll.nMin ? m_infoScroll.nMin : m_infoScroll.nPos; m_infoScroll.nTrackPos = m_infoScroll.nPos; if (m_pTargetWnd) { m_pTargetWnd->SendMessage(WM_VSCROLL, MAKEWPARAM(SB_THUMBPOSITION, m_infoScroll.nPos), (LPARAM)this); } break; } case SB_LINEDOWN: { //向下滚动了一个单位 点击底箭头 m_fCorrectionRD += (float)nPos / m_fRatio; int pos = (int)m_fCorrectionRD; m_fCorrectionRD -= (float)pos;//把小数位单独取出来留给后面的补正 m_infoScroll.nPos += pos;//使用滑块的距离逆向比率得到目标的xPos m_infoScroll.nPos = m_infoScroll.nPos > m_infoScroll.nMax ? m_infoScroll.nMax : m_infoScroll.nPos; m_infoScroll.nTrackPos = m_infoScroll.nPos; if (m_pTargetWnd) { m_pTargetWnd->SendMessage(WM_VSCROLL, MAKEWPARAM(SB_THUMBPOSITION, m_infoScroll.nPos), (LPARAM)this); } break; } case SB_TOP: { //滚动到顶部 //_output_debug_("已经滚动到顶部尽头."); //if (m_pTargetWnd) m_pTargetWnd->SendMessage(WM_VSCROLL, MAKEWPARAM(SB_TOP, 0), (LPARAM)this); break; } case SB_BOTTOM: { //滚动到底部 //_output_debug_("已经滚动到底部尽头."); //if (m_pTargetWnd) m_pTargetWnd->SendMessage(WM_VSCROLL, MAKEWPARAM(SB_BOTTOM, 0), (LPARAM)this); break; } } } CBaseWnd::OnVScroll(nSBCode, nPos, pScrollBar); } void ScrollBar::OnDragSlider(const CPoint& _point) { CPoint point = {0, 0}; CRect rect = m_rcSlider; switch (m_iBar) { case SB_HORZ: { point.x = _point.x - m_ptMouseLastPoint.x; rect.OffsetRect(point); if (rect.left >= m_rcScroll.left && rect.right <= m_rcScroll.right) { //合法拖动滑块 m_rcSlider.left = rect.left;//更新滑块左边坐标 m_rcSlider.right = rect.right;//更新滑块右边坐标 InvalidateRect(m_rcScroll);//刷新通道 SendMessage(WM_HSCROLL, MAKEWPARAM(SB_THUMBTRACK, m_rcSlider.left-m_iLTUPBtn), NULL); m_bIsEnd = FALSE; } else { //拖动滑块不合法: 超出左边 或者 右边 if (!m_bIsEnd && rect.left < m_rcScroll.left) { //超出左边 m_bIsEnd = TRUE; SendMessage(WM_HSCROLL, MAKEWPARAM(SB_LEFT, m_rcScroll.left), NULL); } else if(!m_bIsEnd && rect.right > m_rcScroll.right) { //超出右边 m_bIsEnd = TRUE; SendMessage(WM_HSCROLL, MAKEWPARAM(SB_RIGHT, m_rcScroll.right), NULL); } } break; } case SB_VERT: { point.y = _point.y - m_ptMouseLastPoint.y; rect.OffsetRect(point); if (rect.top >= m_rcScroll.top && rect.bottom <= m_rcScroll.bottom) { //合法拖动滑块 m_rcSlider.top = rect.top;//更新滑块顶部坐标 m_rcSlider.bottom = rect.bottom;//更新滑块底部坐标 InvalidateRect(m_rcScroll);//刷新通道 SendMessage(WM_VSCROLL, MAKEWPARAM(SB_THUMBTRACK, m_rcSlider.top-m_iLTUPBtn), NULL); m_bIsEnd = FALSE; } else { //拖动滑块不合法: 超出顶部 或者 底部 if (!m_bIsEnd && rect.top < m_rcScroll.top) { //超出顶部 m_bIsEnd = TRUE; SendMessage(WM_VSCROLL, MAKEWPARAM(SB_TOP, m_rcScroll.top), NULL); } else if(!m_bIsEnd && rect.bottom > m_rcScroll.bottom) { //超出底部 m_bIsEnd = TRUE; SendMessage(WM_VSCROLL, MAKEWPARAM(SB_BOTTOM, m_rcScroll.bottom), NULL); } } break; } } } void ScrollBar::OnClickLTUPBtn()//点击了(左箭头/顶部箭头) { int iSpace = 0; int iPage = 0; switch (m_iBar) { case SB_HORZ: { //_output_debug_("点击了左箭头"); iSpace = m_rcScroll.Width() - m_rcSlider.Width();//计算出滑块能滑动的最大距离 iPage = int((float)iSpace / ((float)iSpace / 10.0f));//点击一次箭头 滑块移动的距离 if (m_rcSlider.left - iPage >= m_rcScroll.left) { //合法滑动 } else { //滑动可能超出左边 iPage = m_rcSlider.left-m_rcScroll.left;//重置到尽头 } if (iPage) { m_rcSlider.OffsetRect(-iPage, 0); InvalidateRect(m_rcScroll); SendMessage(WM_HSCROLL, MAKEWPARAM(SB_LINELEFT, iPage), NULL); } break; } case SB_VERT: { //_output_debug_("点击了顶部箭头"); iSpace = m_rcScroll.Height() - m_rcSlider.Height();//计算出滑块能滑动的最大距离 iPage = int((float)iSpace / ((float)iSpace / 10.0f));//点击一次箭头 滑块移动的距离 if (m_rcSlider.top - iPage >= m_rcScroll.top) { //合法滑动 } else { //滑动可能超出顶部 iPage = m_rcSlider.top - m_rcScroll.top;//重置到尽头 } if (iPage) { m_rcSlider.OffsetRect(0, -iPage); InvalidateRect(m_rcScroll); SendMessage(WM_VSCROLL, MAKEWPARAM(SB_LINEUP, iPage), NULL); } break; } } } void ScrollBar::OnClickRTDNBtn()//点击了(右箭头/底部箭头) { int iSpace = 0; int iPage = 0; switch (m_iBar) { case SB_HORZ: { //_output_debug_("点击了右箭头"); iSpace = m_rcScroll.Width() - m_rcSlider.Width();//计算出滑块能滑动的最大距离 iPage = int((float)iSpace / ((float)iSpace / 10.0f));//点击一次箭头 滑块移动的距离 if (m_rcSlider.right + iPage <= m_rcScroll.right) { //合法滑动 } else { //滑动可能超出右边 iPage = m_rcScroll.right - m_rcSlider.right;//重置到尽头 } if (iPage) { m_rcSlider.OffsetRect(iPage, 0); InvalidateRect(m_rcScroll); SendMessage(WM_HSCROLL, MAKEWPARAM(SB_LINERIGHT, iPage), NULL); } break; } case SB_VERT: { //_output_debug_("点击了底部箭头"); iSpace = m_rcScroll.Height() - m_rcSlider.Height();//计算出滑块能滑动的最大距离 iPage = int((float)iSpace / ((float)iSpace / 10.0f));//点击一次箭头 滑块移动的距离 if (m_rcSlider.bottom + iPage <= m_rcScroll.bottom) { //合法滑动 } else { //滑动可能超出底部 iPage = m_rcScroll.bottom - m_rcSlider.bottom;//重置到尽头 } if (iPage) { m_rcSlider.OffsetRect(0, iPage); InvalidateRect(m_rcScroll); SendMessage(WM_VSCROLL, MAKEWPARAM(SB_LINEDOWN, iPage), NULL); } break; } } } void ScrollBar::SetTarget(CWnd* _pTargetWnd) { m_pTargetWnd = _pTargetWnd; } BOOL ScrollBar::SetScrollInfo(SCROLLINFO& _refScrollInfo, BOOL _bRedraw) { if (_refScrollInfo.nMax > (int)_refScrollInfo.nPage) { CRect rect = m_infoScrollBar.rcScrollBar;//取出滚动条的范围 float fRatio = 0.0f;//比率 int iSliderLen = 0;//滑块(长度/宽度) int iPos = 0; int iLTUP = 0; int iRTDN = 0; bool bIsValid = false; if ((_refScrollInfo.fMask & (SIF_RANGE | SIF_PAGE | SIF_POS)) == false)//提供的fMask权限不足 { return false; } switch (m_iBar) { case SB_HORZ: { fRatio = (float)(rect.Width() - (m_iLTUPBtn + m_iRTDNBtn)) / (float)_refScrollInfo.nMax;//计算比率: (总长度-2个箭头) / 目标控件内容最大可视范围 iSliderLen = (int)((float)rect.Width() * fRatio);//计算滑块的(长度) 水平滚动条 if (iSliderLen < m_iMinSlider)//如果滑块太短了 { iSliderLen = m_iMinSlider;//使用最小滑块长度 fRatio = (float)(rect.Width() - (m_iLTUPBtn + m_iRTDNBtn + m_iMinSlider)) / (float)_refScrollInfo.nMax;//重新计算比率: (总长度-2个箭头-最小滑块长度) / 目标控件内容最大可视范围 } iPos = (int)((float)_refScrollInfo.nPos * fRatio);//根据提供的nPos算出应该滚动的距离 iLTUP = iPos + m_iLTUPBtn;//算出滑块左边的坐标值 iRTDN = iLTUP + iSliderLen;//算出滑块右边的坐标值 if (iLTUP >= m_rcScroll.left && iRTDN <= m_rcScroll.right)//如果滑块左右两边都位于滚动条通道内,提供的nPos合法 { m_rcSlider.left = iLTUP; m_rcSlider.right = iRTDN; if (_bRedraw) InvalidateRect(m_rcScroll);//更新通道内容 bIsValid = true;//操作合法 m_fRatio = fRatio;//更新比率 } else { //提供的nPos不合法 return FALSE; } break; } case SB_VERT: { fRatio = (float)(rect.Height() - (m_iLTUPBtn + m_iRTDNBtn)) / (float)_refScrollInfo.nMax;//计算比率: (总宽度-2个箭头) / 目标控件内容最大可视范围 iSliderLen = (int)((float)rect.Height() * fRatio);//计算滑块的(宽度) 垂直滚动条 if (iSliderLen < m_iMinSlider)//如果滑块太短了 { iSliderLen = m_iMinSlider;//使用最小滑块宽度 fRatio = (float)(rect.Height() - (m_iLTUPBtn + m_iRTDNBtn + m_iMinSlider)) / (float)_refScrollInfo.nMax;//重新计算比率: (总宽度-2个箭头-最小滑块宽度) / 目标控件内容最大可视范围 } iPos = (int)((float)_refScrollInfo.nPos * fRatio);//根据提供的nPos算出应该滚动的距离 iLTUP = iPos + m_iLTUPBtn;//算出滑块顶部的坐标值 iRTDN = iLTUP + iSliderLen;//算出滑块底部的坐标值 if (iLTUP >= m_rcScroll.top && iRTDN <= m_rcScroll.bottom)//如果滑块上下两边都位于滚动条通道内,提供的nPos合法 { m_rcSlider.top = iLTUP; m_rcSlider.bottom = iRTDN; if (_bRedraw) InvalidateRect(m_rcScroll);//更新通道内容 bIsValid = true;//操作合法 m_fRatio = fRatio;//更新比率 } else { //提供的nPos不合法 return FALSE; } break; } } //更新scroll info 数据 if (bIsValid && _refScrollInfo.fMask & SIF_ALL) { m_infoScroll = _refScrollInfo;//全部数据复制给内部info m_infoScroll.cbSize = sizeof SCROLLINFO;//系统性修正数据-避免提供的数据有问题 m_infoScroll.fMask = SIF_ALL;//系统性修正数据-避免提供的数据有问题 return TRUE; } else if (bIsValid) { if (_refScrollInfo.fMask & SIF_RANGE) { m_infoScroll.nMin = _refScrollInfo.nMin; m_infoScroll.nMax = _refScrollInfo.nMax; } if (_refScrollInfo.fMask & SIF_PAGE) { m_infoScroll.nPage = _refScrollInfo.nPage; } if (_refScrollInfo.fMask & SIF_POS) { m_infoScroll.nPos = _refScrollInfo.nPos; } //SIF_DISABLENOSCROLL //不处理 //SIF_TRACKPOS //系统内部处理 return TRUE; } } return FALSE; } BOOL ScrollBar::SetScrollPos(int _iPos, BOOL _bRedraw) { int iPos = (int)roundf((float)_iPos * m_fRatio);//根据提供的nPos算出应该滚动的距离 CRect rect; if (_iPos > -1) { switch (m_iBar) { case SB_HORZ: { iPos += m_iLTUPBtn; rect = m_rcSlider; rect.OffsetRect(iPos, 0); if (rect.right <= m_rcScroll.right) { m_rcSlider = rect; if(_bRedraw)InvalidateRect(m_rcScroll); m_infoScroll.nPos = _iPos; m_infoScroll.nTrackPos = _iPos; return TRUE; } else { m_rcSlider.right = m_rcScroll.right; m_rcSlider.left = m_rcSlider.right - rect.Width(); if (_bRedraw)InvalidateRect(m_rcScroll); m_infoScroll.nPos = _iPos; m_infoScroll.nTrackPos = _iPos; } break; } case SB_VERT: { iPos += m_iLTUPBtn; rect = m_rcSlider; rect.OffsetRect(0, iPos); if (rect.bottom <= m_rcScroll.bottom) { m_rcSlider = rect; if (_bRedraw)InvalidateRect(m_rcScroll); m_infoScroll.nPos = _iPos; m_infoScroll.nTrackPos = _iPos; return TRUE; } else { m_rcSlider.bottom = m_rcScroll.bottom; m_rcSlider.top = m_rcScroll.bottom - rect.Height(); if (_bRedraw)InvalidateRect(m_rcScroll); m_infoScroll.nPos = _iPos; m_infoScroll.nTrackPos = _iPos; } break; } } } return FALSE; }
07-02
m_leftArrowRect = CRect(0, 0, m_arrowSize, height); m_rightArrowRect = CRect(width - m_arrowSize, 0, width, height); m_trackRect = CRect(m_arrowSize, 0, width - m_arrowSize, height); } else { m_...
Crazypony四轴飞行器代码框架
翱翔云端的鸟
12-29 8674
软件框架讲解 作者：nieyong 飞控源代码部分，都是属于一砖一瓦敲出来的。没有使用实时操作系统（RTOS），我们称之为裸机代码，托管在Github上，名字为crazepony-firmware-none，尾缀none表示未使用操作系统裸跑的意思。 那么，现在就结合裸机代码，来说说Crazepony的软件框架。 本文档以Crazepony 5.2版本为基础。Craze
Qt学习笔记1-窗口部件
al_888的博客
09-08 649
窗口与子部件 窗口部件（Widget）简称部件，是Qt中建立用户界面的主要元素。像主窗口、对话框、标签、还有以后要介绍到的按钮、文本输入框等都是窗口部件。这些部件可以接收用户输入、显示数据和状态信息，并且在屏幕上绘制自己。有些也可以作为一个窗口来放置其他部件。Qt中把没有嵌入到其他部件中的部件称为窗口，一般窗口都有边框和标题栏，就像程序中的widget和label一样。QMainWindow和大量的QDialog子类是最一般的窗口类型。窗口就是没有父部件的部件，所以又称为顶级部件（top-level wid
Visual Assist X在VS2012中的启用与禁用问题
yongG3224的专栏
08-04 4018
自从某次打开VS2012后没有显示VA的插件显示，看着这蛋疼的代码颜色界面。 以为是插件出现问题，于是就重新下载安装VA，不行。又以为是版本问题，安装了几个版本也不行。最后抓狂的甚至重装VS2012也解决不了问题。最后才发现是因为禁用了VA的插件而已。 解决办法： 工具->扩展与更新 全部->VA启用，找到 立即重新启动 然后就可以看到这熟悉的代码颜色界面了。
cocos2dx实现游戏属性雷达图
yongG3224的专栏
09-09 2004
五边形的属性雷达图 auto node = Node::create(); node->setPosition(visibleSize.width/2,visibleSize.height/2); this->addChild(node); auto draw = DrawNode::create(); node->addChild(draw); flo
cocos2dx 3.X 在windows下的环境搭建并建立第一个HelloWorld工程
yongG3224的专栏
03-24 1607
准备文件：python2.7安装包；VisualStudio 2013安装包；Visual Assist X；cocos2dx 3.x压缩包。笔者使用的文件为：python-2.7.3.amd64.msi；VS2013_RTM_ULT_CHS.iso；VA_X_Setup2048.exe；cocos2d-x-3.4.zip。下面逐步讲解每个软件的用途。 python为python脚本编译软件，在这里
评论
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付：10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明：

1.余额是钱包充值的虚拟货币，按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载，可以购买VIP、付费专栏及课程。

余额充值