[code=c]
请填写代码
//请帮我看看下面一段程序
#include <windows.h>
#include <stdio.h>

LRESULT CALLBACK WindowxProc(
                            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,          // command line
                   int nCmdShow              // show state
                   )
{
    WNDCLASS wncls;
    wncls.cbClsExtra=0;
    wncls.cbWndExtra=0;
    wncls.hbrBackground=(HBRUSH)GetStockObject(GRAY_BRUSH);
    wncls.hCursor=LoadCursor(NULL,IDC_ARROW);
    wncls.hIcon=LoadIcon(NULL,IDI_ERROR);
    wncls.hInstance=hInstance;
    wncls.lpfnWndProc=WindowxProc;
    wncls.lpszClassName="xiaohei";
    wncls.lpszMenuName=NULL;
    wncls.style=CS_HREDRAW|CS_VREDRAW;

    RegisterClass(&wncls);

    HWND hwnd;
    hwnd=CreateWindow("xiaohei","威信",WS_OVERLAPPEDWINDOW,
        20,50,600,300,NULL,NULL,hInstance,NULL);
    ShowWindow(hwnd,SW_NORMAL);
    UpdateWindow(hwnd);

    MSG msg;   
    while (GetMessage(&msg,hwnd,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return 0;
}
LRESULT CALLBACK WindowxProc(
                            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,"the chars is %d",wParam);
        MessageBox(hwnd,szchar,"键盘消息!",NULL);
        break;
    case WM_LBUTTONDOWN:
        HDC hdc;
        MessageBox(hwnd,"鼠标按下","xiaohei123",NULL);
        hdc=GetDC(hwnd);
           TextOut(hdc,60,150,"小河向东流!",strlen("小河向东流!"));
        ReleaseDC(hwnd,hdc);
        break;
        
    case WM_RBUTTONDOWN:
                 MessageBox(hwnd,"右键按下!","xiaohei123",0);
         hdc=GetDC(hwnd);
        TextOut(hdc,100,250,"你好呀!",strlen("你好呀!"));
        ReleaseDC(hwnd,hdc);
        break;
    case WM_PAINT:
        
        PAINTSTRUCT ps;
        hdc=BeginPaint(hwnd,&ps);
        TextOut(hdc,100,200,"小黑来了!",strlen("小黑来了!"));
        EndPaint(hwnd,&ps); 
        break;
    case WM_CLOSE:
        if (IDYES==MessageBox(hwnd,"是否要关闭窗口?","xiaohei123",MB_YESNO))
        {
           DestroyWindow(hwnd);
          
        }
        break;
    case WM_DESTROY:
         PostQuitMessage(0);
          break;
    
   default:
        return DefWindowProc(hwnd,uMsg,wParam,lParam);
    }
    return 0;
}
//在编译和链接以及运行的时候没啥问题，就是是关闭了窗口，
这个程序的进程仍然没有关闭，请问是怎么回事呀？



[/code][code=c]
请填写代码
[/code][code=c]
请填写代码
[/code]