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主题:windows程序,哪位大哥给找下错,程序后台运行,没显示

#include<windows.h>
#include<stdio.h>

LRESULT CALLBACK WinSunProc(
  HWND hwnd,      // handle to window
  UINT uMsg,      // message identifier
  WPARAM wParam,  // first message parameter
  LPARAM lParam   // second message parameter
);

int WINAPI WinMain(
  HINSTANCE hInstance,  // handle to current instance
  HINSTANCE hPrevInstance,  // handle to previous instance
  LPSTR lpCmdLine,      // pointer to command line
  int nCmdShow          // show state of window
)

{
    WNDCLASS wndcls;
    wndcls.cbClsExtra=0;
    wndcls.cbClsExtra =0;
    wndcls.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
    wndcls.hCursor=LoadCursor(NULL,IDC_CROSS);
    wndcls.hIcon=LoadIcon(NULL,IDI_ERROR);
    wndcls.hInstance=hInstance;
    wndcls.lpfnWndProc=WinSunProc;
    wndcls.lpszClassName="caolunihao";
    wndcls.lpszMenuName=NULL;
    wndcls.style=CS_HREDRAW|CS_VREDRAW;
    RegisterClass(&wndcls);

    HWND hwnd;
    hwnd=CreateWindow("dfgdfe061","fgf",WS_OVERLAPPEDWINDOW,0,0,8000,6000,
        NULL,NULL,hInstance,NULL);
    ShowWindow(hwnd,SW_SHOWNORMAL);
    UpdateWindow(hwnd);

    MSG msg;
    while(GetMessage(&msg,NULL,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);

    }
    return 0;
}

LRESULT CALLBACK WinSunProc(
  HWND hwnd,      // handle to window
  UINT uMsg,      // message identifier
  WPARAM wParam,  // first message parameter
  LPARAM lParam   // second message parameter
)
{
    switch(uMsg)
    {
    case WM_CHAR:
        char szChar[20];
        sprintf(szChar,"char is %d",wParam);
        MessageBox(hwnd,szChar,"caolunihao",0);
        break;
    case WM_LBUTTONDOWN:
        MessageBox(hwnd,"mouse clicked","jidian",0);
        HDC hdc;
        hdc=GetDC(hwnd);
        TextOut(hdc,0,50,"训练",strlen("训练"));
        ReleaseDC(hwnd,hdc);
        break;
    case WM_PAINT:
        HDC hDC;
        PAINTSTRUCT ps;
        hDC=BeginPaint(hwnd,&ps);
        TextOut(hDC,0,0,"基础教程",strlen("基础教程"));
        EndPaint(hwnd,&ps);
        break;
    case WM_CLOSE:
        if (IDYES==MessageBox(hwnd,"是否真的结束?","lianxi",MB_YESNO))
        {
            DestroyWindow(hwnd);
        }
            break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;

    default:
        return DefWindowProc(hwnd,uMsg,wParam,lParam);
    }
    return 0;    
}

回复列表 (共1个回复)

沙发

wndcls.cbClsExtra=0;
wndcls.cbClsExtra =0; // 这是啥意思,为什么它要赋值两次?应该是 wndcls.cbWndExtra = 0
这种错误很容易发现,难道界面出不来时,你就不判断一下RegisterClass是否调用成功?

hwnd=CreateWindow("dfgdfe061", // 这又是个什么?上面的classname是"caolunihao",这里为什么变成了"dfgdfe061"?
这种错误很容易发现,难道界面出不来时,你就不判断一下CreateWindow是否调用成功?

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