mfc小问题

最新推荐文章于 2025-01-04 00:00:00 发布

原创最新推荐文章于 2025-01-04 00:00:00 发布 · 348 阅读

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文章标签：

#mfc #winapi #null #application

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这篇博客探讨了一个MFC应用中遇到的问题，即在窗口中显示汉字时出现异常。作者提供了包含WM_PAINT消息处理和光标改变的代码，并询问为何输出的汉字不正确。文章涉及WinAPI和MFC的窗口类初始化以及窗口过程处理。

代码如下：

#include"windows.h"
#include"string"
#include"tchar.h"
void WINAPI CaretPos(HWND hWnd,int nArrayPos,char *cCharBuf,int*xCaret,int*yCaret,int nCharWidth );
long WINAPI WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam);
BOOL InitWindowsClass(HINSTANCE hInstance);
BOOL InitWindows(HINSTANCE hInstance,int nCmdShow);
HWND hWndMain;
static wchar_t lpszclassname[]=_T("shegan");
static wchar_t lpszTitle[]=_T("s");
char line1[]="这是第行";
static wchar_t line2[]=_T("这是第二行");
HDC Hdc;
TEXTMETRIC tm;
HWND hWnd;
PAINTSTRUCT pt;
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow)
{
MSG msg;
if(!InitWindowsClass(hInstance))
return FALSE;
if(!InitWindows(hInstance,nCmdShow))
return FALSE;
while(GetMessage(&msg,0,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;

}
long WINAPI WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)
{
WORD x,y;
HCURSOR hCursor;
switch(message)
{
case WM_PAINT:
     Hdc=BeginPaint(hWnd,&pt);
     SetTextColor(Hdc,RGB(255,0,0));
TextOut(Hdc,60,10,(LPCWSTR)line1,strlen(line1));
     //GetTextMetrics(Hdc,&tm);
    //SetTextColor(Hdc,RGB(0,0,255));

case WM_MOUSEMOVE:
x=LOWORD(lParam);//取低4位
y=HIWORD(lParam);//取高4位
   if(x>=50&&x<=400&&y>=50&&y<=300)
   {
    if(x>=50&&x<=100&&y>=50&&y<=100)
     {
      hCursor=LoadCursor(NULL,IDC_CROSS);
   SetCursor(hCursor);
     }
    if(x>=100&&x<=150&&y>=50&&y<=100)
    {
    hCursor=LoadCursor(NULL,IDC_SIZE);
    SetCursor(hCursor);
    }
    if(x>=150&&x<=200&&y>=50&&y<=100)
    {
    hCursor=LoadCursor(NULL,IDC_SIZE);
    SetCursor(hCursor);
    }
       if(x>=50&&x<=100&&y>=100&&y<=150)
    {
    hCursor=LoadCursor(NULL,IDC_SIZENESW);
    SetCursor(hCursor);

    }
    if(x>=250&&x<=400&&y>=100&&y<=150)
    {
    hCursor=LoadCursor(NULL,IDC_SIZENWSE);
    SetCursor(hCursor);
    }
    if(x>=50&&x<=100&&y>=150&&y<300)
    {
    hCursor=LoadCursor(NULL,IDC_SIZEWE);
    SetCursor(hCursor);
    }
    if(x>=100&&x<=250&&y>=150&&y<=300)
    {
    hCursor=LoadCursor(NULL,IDC_UPARROW);
    SetCursor(hCursor);
    }
    if(x>=250&&x<=400&&y>=150&&y<=300)
    {
    hCursor=LoadCursor(NULL,IDC_WAIT);
    SetCursor(hCursor);
    }

   }
    else
          {
            hCursor=LoadCursor(NULL,IDC_ARROW);
   SetCursor(hCursor);//该函数确定光标的形状

             }
    return 0;
    case WM_DESTROY:
     PostQuitMessage(0);
     return 0;
    default:
     return (DefWindowProc(hWnd,message,wParam,lParam));

}
}

BOOL InitWindowsClass(HINSTANCE hInstance)
{
WNDCLASS wndclass;
wndclass.cbClsExtra=0;
wndclass.cbWndExtra=0;
wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.hCursor=LoadCursor(NULL,IDC_UPARROW);
wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);//END什么意思

wndclass.hInstance=hInstance;
wndclass.lpfnWndProc=WndProc;
wndclass.lpszClassName=lpszclassname;
wndclass.lpszMenuName=NULL;
wndclass.style=CS_HREDRAW|CS_VREDRAW;//
return RegisterClass(&wndclass);

}

BOOL InitWindows(HINSTANCE hInstance,int nCmdShow)
{
hWnd=CreateWindow(
                lpszclassname,
       lpszTitle,
       WS_OVERLAPPEDWINDOW,
       CW_USEDEFAULT,
       0,
       CW_USEDEFAULT,
       0,
       NULL,
       NULL,
       hInstance,
       NULL
                  );
if(!hWnd)
   return FALSE;
hWndMain=hWnd;
ShowWindow(hWnd,nCmdShow);
UpdateWindow(hWnd);
return TRUE;
}

请问：为什么输出是的汉子不正确？