|
#include <stdio.h>
#include <windows.h>
LRESULT CALLBACK WinProc(
HWND hwnd, // handle to window
UINT uMsg, // message identifier
WPARAM wParam, // first message parameter
LPARAM lParam // second message parameter
);
#define BUF_LEN 256
int WINAPI WinMain(
HINSTANCE hInstance, // handle to current instance
HINSTANCE hPrevInstance, // handle to previous instance
LPSTR lpCmdLine, // command line
int nCmdShow // show state
)
{
HWND hWnd ;
WNDCLASS wcs ;
MSG msg ;
int r ;
char szbuf[BUF_LEN];
//注册窗口类
wcs.style = CS_HREDRAW | CS_VREDRAW ;
wcs.lpfnWndProc = WinProc ;
wcs.cbClsExtra = 0 ;
wcs.cbWndExtra = 0 ;
wcs.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wcs.hCursor = LoadCursor(hInstance,IDC_ARROW);
wcs.hIcon = LoadIcon(hInstance,IDI_APPLICATION);
wcs.hInstance = hInstance ;
wcs.lpszMenuName = NULL ;
wcs.lpszClassName ="WndClass";
r = RegisterClass(&wcs);
if ( 0 == r )
{
sprintf(szbuf,"register class error:%d",GetLastError());
MessageBox(NULL,szbuf,"error",MB_OK);
exit(0);
return FALSE ;
}
//创建窗口
hWnd = CreateWindow("WndClass","test it",WS_OVERLAPPEDWINDOW&~WS_THICKFRAME,100,100,600,600,NULL,NULL,hInstance,NULL);
if ( NULL == hWnd )
{
sprintf(szbuf,"createWindow error:%d",GetLastError());
MessageBox(NULL,szbuf,"error",MB_OK);
exit(0);
}
//显示窗口和更新窗口
ShowWindow(hWnd,SW_SHOW);
UpdateWindow(hWnd);
//消息队列
while( (r = GetMessage(&msg,NULL,0,0)) != 0 )
{
if( r < 0 )
{
sprintf(szbuf,"GetMessage error:%d",GetLastError());
MessageBox(NULL,szbuf,"error",MB_OK);
exit(0);
}
else
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return 0 ;
}
LRESULT CALLBACK WinProc(
HWND hwnd, // handle to window
UINT uMsg, // message identifier
WPARAM wParam, // first message parameter
LPARAM lParam // second message parameter
)
{
switch( uMsg) {
case WM_CLOSE: //点击窗口关闭时的消息
{
DestroyWindow(hwnd);
break;
}
case WM_DESTROY: //destroywindow发送的消息
{
PostQuitMessage(0);
break ;
}
default:
return ::DefWindowProc(hwnd,uMsg,wParam,lParam);
}
return 0 ;
}
|