为何运行成功后什么都没有？

Question

（Vs2005下运行）
#include <windows.h >
#include <stdio.h >LRESULT  CALLBACK  myProc(HWND        curhwnd,
                          UINT        nMsg,
                          WPARAM      wParam,
                          LPARAM      lParam
                          )
{
    switch(nMsg)
    {
    case WM_CHAR:
        char cArr[20];
        sprintf(cArr,"char is%d",wParam);
        MessageBox(curhwnd,cArr,"messageBox",0);
        break;
    default:
        return  DefWindowProc(curhwnd,nMsg,wParam,lParam);
    }
    return 0;
}int      WINAPI  WinMain(HINSTANCE  hInstance,
                         HINSTANCE  hPrevInstance,//通常为0
                         LPSTR      lpCmdLine,
                         int        nCmdshow                  
                         ){//1设计窗口
    WNDCLASS  wc;
wc.cbClsExtra=0;
wc.cbWndExtra=0;
wc.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
wc.hCursor=LoadIcon(0,IDC_CROSS);
        wc.hInstance=hInstance;//操作系统一开始便分配了一个实例号
        wc.lpfnWndProc=myProc;
    //wc.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
    wc.lpszClassName="haha!"; 
wc.lpszMenuName=0;
    wc.style=CS_HREDRAW |CS_VREDRAW;
//2注册窗口
    RegisterClass(&wc);
//3制造窗口
    HWND hWnd;
    hWnd=CreateWindow("wName","no",WS_OVERLAPPEDWINDOW,10,10,200,200,0,0,hInstance,0);
//4展示窗口
    ShowWindow(hWnd,SW_SHOWNORMAL);
//5刷新/更新窗口
    UpdateWindow(hWnd);    MSG  msg;
    while(GetMessage(&msg,0,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
   return 0;
} 
（Vs2005下运行）
为何运行成功后什么都没有？
并没有产生窗口为何？

Answer 1

第一个参数应该等于wc.lpszClassName
hWnd=CreateWindow("haha!","no",WS_OVERLAPPEDWINDOW,10,10,200,200,0,0,hInstance,0);

Answer 2

#include  <windows.h  >
#include  <stdio.h  >LRESULT  CALLBACK  myProc(HWND        curhwnd,
                                           UINT        nMsg,
                                           WPARAM      wParam,
                                           LPARAM      lParam
                                            )
{
    switch(nMsg)
    {
    case WM_CHAR:
        char cArr[20];
        sprintf(cArr,"char is%d",wParam);
        MessageBox(curhwnd,cArr,"messageBox",0);
        break;
    default:
        return  DefWindowProc(curhwnd,nMsg,wParam,lParam);
    }
    return 0;
}int      WINAPI  WinMain(HINSTANCE  hInstance,
                         HINSTANCE  hPrevInstance,//通常为0
                         LPSTR      lpCmdLine,
                         int        nCmdshow                  
                         ){//1设计窗口
  WNDCLASS  wc;
  wc.cbClsExtra=0;
  wc.cbWndExtra=0;
  wc.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
  wc.hCursor=LoadIcon(0,IDC_CROSS);
        wc.hInstance=hInstance;//操作系统一开始便分配了一个实例号
        wc.lpfnWndProc=myProc;
  wc.lpszClassName="haha!";
    //wc.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH); wc.lpszClassName="haha!"; 
    wc.lpszMenuName=0;
    wc.style=CS_HREDRAW |CS_VREDRAW;
//2注册窗口
    RegisterClass(&wc);
//3制造窗口
    HWND hWnd;
    hWnd=CreateWindow("haha!","no",WS_OVERLAPPEDWINDOW,10,10,200,200,0,0,hInstance,0);
//4展示窗口
    ShowWindow(hWnd,SW_SHOWNORMAL);
//5刷新/更新窗口
    UpdateWindow(hWnd);    MSG  msg;
    while(GetMessage(&msg,0,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
   return 0;
}  改正后仍然什么也看不到？

Answer 3

 wc.hCursor=LoadIcon(0,IDC_CROSS); 
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
这是什么啊，用图标来所光标啊，哈哈，应该改成两句：
wc.hCursor=LoadCursor(0,IDC_CROSS);
  wc.hIcon=LoadIcon(NULL,IDI_APPLICATION)

Answer 4

RegisterClass(&wc); 改成：
if(!RegisterClass(&wc))
{
  MessageBox(...);
  return -1;
}
试试看是不是这里的问题？