【窗口编程】一个简单的C语言窗口程序

#include <windows.h>
//回调函数
LRESULT CALLBACK WinProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
switch(message)
{
case WM_CLOSE:
DestroyWindow(hwnd);
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd,message,wParam,lParam);
}
return 0;
}
//主函数入口
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR szCmdLine,int iCmdShow)
{
TCHAR szname[]=TEXT("classname");
HWND hwnd;
MSG msg;
ZeroMemory(&msg,sizeof(msg));
WNDCLASS wndclass;
wndclass.style=CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc=WinProc;
wndclass.cbClsExtra=0;
wndclass.cbWndExtra=0;
wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
wndclass.hInstance=hInstance;
wndclass.lpszClassName=szname;
wndclass.lpszMenuName=NULL;
RegisterClass(&wndclass);//注册窗口类
hwnd=CreateWindow(szname,TEXT("窗口"),WS_OVERLAPPEDWINDOW ,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);
if(hwnd)
ShowWindow(hwnd,SW_SHOW);
else
{
MessageBox(NULL,TEXT("创建窗口失败！"),TEXT("提示"),MB_OK);
UnregisterClass(szname,hInstance);
return 1;
}
UpdateWindow(hwnd);

while(GetMessage(&msg,hwnd,0,0)>0)
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
UnregisterClass(szname,hInstance);
return msg.wParam;
}