vc模仿qq的选择头像功能

最新推荐文章于 2025-04-25 10:01:08 发布

dragoo1

最新推荐文章于 2025-04-25 10:01:08 发布

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分类专栏：点点滴滴

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本文介绍了一个基于MFC的对话框控件，用于实现头像选择功能。该控件支持从资源中加载多个头像图片，并通过滑动进行浏览。文章详细展示了控件的实现代码，包括如何响应鼠标事件、滚轮事件以及滚动条操作。

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环境:xp sp3,vs2008

主对话框

//qqfaceDlg.h : 头文件
CHeadPanel m_HeadPanel;

// qqfaceDlg.cpp : 实现文件

BOOL CqqfaceDlg::OnInitDialog()
{
   CDialog::OnInitDialog();

   // 将“关于...”菜单项添加到系统菜单中。

   // IDM_ABOUTBOX 必须在系统命令范围内。
   ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
   ASSERT(IDM_ABOUTBOX < 0xF000);

   CMenu* pSysMenu = GetSystemMenu(FALSE);
   if (pSysMenu != NULL)
   {
       BOOL bNameValid;
       CString strAboutMenu;
       bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
       ASSERT(bNameValid);
       if (!strAboutMenu.IsEmpty())
       {
           pSysMenu->AppendMenu(MF_SEPARATOR);
           pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
       }
   }

   // 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
   // 执行此操作
   SetIcon(m_hIcon, TRUE);           // 设置大图标
   SetIcon(m_hIcon, FALSE);       // 设置小图标

   // TODO: 在此添加额外的初始化代码
   m_HeadPanel.AddImage2(IDB_BITMAP1, IDB_BITMAP100);//for(i=IDB_BITMAP1;i<=IDB_BITMAP100;i++)
   CRect rcHeadPanel;
   GetClientRect(rcHeadPanel);
   rcHeadPanel = CRect(10,10, 440,365);
   m_HeadPanel.Create(NULL,NULL,WS_VISIBLE|WS_CLIPSIBLINGS|WS_CLIPCHILDREN|WS_CHILD,rcHeadPanel,this,NULL);

   return TRUE; // 除非将焦点设置到控件，否则返回 TRUE
}

头像设置框

//headpanel.h

#pragma once

#include <vector>

class CHeadPanel : public CWnd
{
   //函数定义
public:
   //构造函数
   CHeadPanel(void);
   //析构函数
   ~CHeadPanel(void);

public:
   afx_msg void OnPaint();
   afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar * pScrollBar);
   afx_msg BOOL OnMouseWheel(UINT nFlags, short zDelta, CPoint pt);
   afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
    afx_msg void OnMouseMove(UINT nFlags, CPoint point);
   afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
   int AddImage(int nResID);
   int AddImage2(int nResIDStart, int nResIDEnd);

   DECLARE_MESSAGE_MAP()
private:
   std::vector <CBitmap*> m_vecBitmap;   //所有加载的位图图片
   int m_nColPerRow;
   void SetScroll();
   int m_nCurSrollPos;
   int m_nMaxSrollPos;
   int m_nRows;
   int m_iSelect;
};

//headpanel.cpp

#include "StdAfx.h"
#include "HeadPanel.h"
//////////////////////////////////////////////////////////////////////////
BEGIN_MESSAGE_MAP(CHeadPanel,CWnd)
   ON_WM_VSCROLL()
   ON_WM_PAINT()
   ON_WM_MOUSEWHEEL()
   ON_WM_LBUTTONDOWN()
   ON_WM_CREATE()
   ON_WM_MOUSEMOVE()
END_MESSAGE_MAP()

CHeadPanel::CHeadPanel(void)
{
   m_nColPerRow = 8;
   m_nCurSrollPos = 0;
   m_nMaxSrollPos = 0;
   m_nRows = 0;
   m_iSelect = -1;
   m_iMove = -1;
}

CHeadPanel::~CHeadPanel(void)
{
   int i=0;
   for(i=0; i<(int)m_vecBitmap.size(); i++)
   {
       delete m_vecBitmap[i];
       m_vecBitmap[i] = NULL;
   }
}

void CHeadPanel::OnPaint()
{
   CPaintDC dc(this);

   CRect rcClient;
   GetClientRect(rcClient);

   int memHeight = max(50*m_nRows, rcClient.Height());   //内存中图片高度
   int memWidth = rcClient.Width();       //内存中图片宽度
   int xSrc = 0;                           //内存中图片绘制区起始位置y
   int ySrc = m_nCurSrollPos;                           //内存中图片绘制区起始位置y

   CBitmap bitmap;
   CDC MemeDc;
   MemeDc.CreateCompatibleDC(&dc);
   bitmap.CreateCompatibleBitmap(&dc, memWidth, memHeight);
   CBitmap *pOldBitmap = MemeDc.SelectObject(&bitmap);
   MemeDc.FillSolidRect(0,0,memWidth,memHeight,RGB(236, 243, 246));

   int i=0;
   for(; i<(int)m_vecBitmap.size(); i++)
   {
       int nCurRow = i/m_nColPerRow;
       int nCurCol = i%m_nColPerRow;

       CDC dcMem2;
       dcMem2.CreateCompatibleDC(&MemeDc);
       CBitmap *pOldBitmap1 = dcMem2.SelectObject(m_vecBitmap[i]);
       if(i==m_iSelect)   //鼠标点击或移动到某头像的上方
       {
           MemeDc.FillSolidRect(10+50*nCurCol-3,10+50*nCurRow-3,46,46,RGB(255,0,0));
       }
       if(i==m_iMove)
       {
           MemeDc.FillSolidRect(10+50*nCurCol-3,10+50*nCurRow-3,46,46,RGB(55,189,250));
       }

       MemeDc.BitBlt(10+50*nCurCol,10+50*nCurRow,40,40,&dcMem2,0,0,SRCCOPY); //加载位图ok

       dcMem2.SelectObject(pOldBitmap1);
       dcMem2.DeleteDC();
   }

   dc.BitBlt( rcClient.left, rcClient.top, rcClient.Width(), rcClient.Height(), &MemeDc, 0, ySrc, SRCCOPY);

   MemeDc.SelectObject(pOldBitmap);
   MemeDc.DeleteDC();
}

void CHeadPanel::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar * pScrollBar)
{
   SCROLLINFO si;
   si.fMask=SIF_ALL;
   GetScrollInfo(SB_VERT,&si,SIF_ALL);

   CRect rcClient;
   GetClientRect(&rcClient);

   int iPage = rcClient.Height();
   int iLastPos = m_nCurSrollPos;

   //移动坐标
   switch (nSBCode)
   {
   case SB_TOP:
       {
           iLastPos=0;
           break;
       }
   case SB_BOTTOM:
       {
           iLastPos=m_nMaxSrollPos-rcClient.Height();
           break;
       }
   case SB_LINEUP:
       {
           iLastPos-=1;
           break;
       }
   case SB_PAGEUP:
       {
           iLastPos-=iPage;
           break;
       }
   case SB_LINEDOWN:
       {
           iLastPos+=1;
           break;
       }
   case SB_PAGEDOWN:
       {
           iLastPos += iPage;
           break;
       }
   case SB_THUMBTRACK:
       {
           iLastPos=nPos;
           break;
       }
   }

   //调整位置
   iLastPos = min(iLastPos,m_nMaxSrollPos-rcClient.Height());
   iLastPos = max(iLastPos,0);
   if (iLastPos!=m_nCurSrollPos)
   {
       m_nCurSrollPos = iLastPos;
       si.nPos=iLastPos;
       if(si.nPos>(int)(si.nMax-si.nMin-si.nPage+1)) si.nPos=si.nMax-si.nMin-si.nPage+1;
       if(si.nPos<si.nMin) si.nPos=si.nMin;
       si.fMask=SIF_POS;
       SetScrollInfo(SB_VERT,&si);

       Invalidate(TRUE);
   }
}

BOOL CHeadPanel::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt)
{
   CRect rcClient;
   GetClientRect(&rcClient);

   int iLastPos = m_nCurSrollPos;
   iLastPos -= (zDelta/120)*(rcClient.Width()/6);

   iLastPos = min(iLastPos,m_nMaxSrollPos-rcClient.Height());
   iLastPos = max(iLastPos,0);

   m_nCurSrollPos = iLastPos;
   SetScrollPos(SB_VERT,m_nCurSrollPos);

   Invalidate();
   return TRUE;
}
void CHeadPanel::OnLButtonDown(UINT nFlags, CPoint point)
{
   SetFocus();

   CRect rcClient;
   GetClientRect(rcClient);

   int nCol = -1;
   int nDivx = point.x/50;
   if(point.x>=(nDivx*50+10) && point.x<=(nDivx*50+50))
   {
       nCol = nDivx;
   }

   int nRow = -1;
   int nDivy = (m_nCurSrollPos + point.y)/50;
   if((m_nCurSrollPos+point.y)>=(nDivy*50+10) && (m_nCurSrollPos+point.y)<=(nDivy*50+50))
   {
       nRow = nDivy;
   }

   if(nCol==-1 || nRow==-1)
   {
       m_iSelect = -1;
   }
   else
   {
       m_iSelect = nRow*m_nColPerRow + nCol;
   }

   Invalidate(TRUE);

   __super::OnLButtonDown(nFlags,point);
}

int CHeadPanel::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
   if (CWnd::OnCreate(lpCreateStruct) == -1)
       return -1;

   //设置滚动条
   SetScroll();
   return 0;
}

int CHeadPanel::AddImage(int nResID)
{
   CBitmap* pBitmap = new CBitmap;
   pBitmap->LoadBitmap(nResID);
   m_vecBitmap.push_back(pBitmap);

   int nSize = m_vecBitmap.size();
   int nMod = nSize%m_nColPerRow;
   m_nRows = nSize/m_nColPerRow;
   if(nMod!=0)
   {
       m_nRows++;
   }

   return nSize;
}

int CHeadPanel::AddImage2(int nResIDStart, int nResIDEnd)
{
   for(int i=nResIDStart; i<=nResIDEnd; i++)
   {
       CBitmap* pBitmap = new CBitmap;
       pBitmap->LoadBitmap(i);
       m_vecBitmap.push_back(pBitmap);
   }

   int nSize = m_vecBitmap.size();
   int nMod = nSize%m_nColPerRow;
   m_nRows = nSize/m_nColPerRow;
   if(nMod!=0)
   {
       m_nRows++;
   }

   return nSize;
}

void CHeadPanel::SetScroll()
{
   //-计算页数
   m_nMaxSrollPos = m_nRows*50;

   CRect rcClient;
   GetClientRect(rcClient);

   SCROLLINFO vinfo;
   vinfo.cbSize = sizeof(vinfo);
   vinfo.fMask = SIF_ALL;
   vinfo.nPage = rcClient.Height();   //滚动条所占页数
   vinfo.nMax= m_nMaxSrollPos;       //最大页
   vinfo.nMin = 0;       //最大页
   vinfo.nTrackPos = 0;
   vinfo.nPos = m_nCurSrollPos;
   SetScrollInfo(SB_VERT,&vinfo);
}

void CHeadPanel::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
   CRect rcClient;
   GetClientRect(rcClient);

   int nCol = -1;
   int nDivx = point.x/50;
   if(point.x>=(nDivx*50+10) && point.x<=(nDivx*50+50))
   {
       nCol = nDivx;
   }

   int nRow = -1;
   int nDivy = (m_nCurSrollPos + point.y)/50;
   if((m_nCurSrollPos+point.y)>=(nDivy*50+10) && (m_nCurSrollPos+point.y)<=(nDivy*50+50))
   {
       nRow = nDivy;
   }

   if(nCol==-1 || nRow==-1)
   {
       m_iMove = -1;
   }
   else
   {
       m_iMove = nRow*m_nColPerRow + nCol;
   }

   Invalidate(TRUE);

   CWnd::OnMouseMove(nFlags, point);
}

参考：http://download.youkuaiyun.com/detail/zhao_wei2003zj/2370544

http://download.youkuaiyun.com/detail/a136328960/1464551