vc++高手来看下给分100 ----注册窗口类失败

把注册窗口过程改为如下：
WNDCLASSEX wcex;

wcex.cbSize = sizeof(WNDCLASSEX);

wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)WinSunProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_FFD);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = (LPCSTR)IDC_FFD;
wcex.lpszClassName = "error";
wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);
if(!RegisterClassEx(&wcex))
{
MessageBox (NULL,TEXT("注册窗口失败了"),
"error",MB_ICONERROR);

return 0;

}

完整程序：
#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, // command line
int nCmdShow // show state
)
{
WNDCLASSEX wcex;

wcex.cbSize = sizeof(WNDCLASSEX);

wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)WinSunProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_FFD);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = (LPCSTR)IDC_FFD;
wcex.lpszClassName = "error";
wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);
if(!RegisterClassEx(&wcex))
{
MessageBox (NULL,TEXT("注册窗口失败了"),
"error",MB_ICONERROR);

return 0;

}

HWND hwnd;
hwnd=CreateWindow("error","first window",WS_OVERLAPPEDWINDOW,0,0,200,300,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 s[20];
sprintf(s,"this char is %d",wParam);
MessageBox(hwnd,s,"first window",0);
break;
case WM_LBUTTONDOWN:
MessageBox(hwnd,"您按了鼠标左键","first window",MB_YESNO);
HDC hdc;
hdc=GetDC(hwnd);
TextOut(hdc,0,50,"您按了鼠标左键",strlen("您按了鼠标左键"));
ReleaseDC(hwnd,hdc);
break;
case WM_PAINT:
HDC hDc;
PAINTSTRUCT ps;
hDc=BeginPaint(hwnd,&ps);
TextOut(hDc,0,0,"我的第一个程序",strlen("我的第一个程序"));
EndPaint(hwnd,&ps);
break;
case WM_CLOSE:
if(IDYES==MessageBox(hwnd,"是否关闭窗口","first window",MB_YESNO))
{
DestroyWindow(hwnd);
}
break;
case WM_DESTROY:
PostQuitMessage(0);

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

看不懂,真排卸