最简单的一个win32程序

#include <windows.h>

HINSTANCE g_hInst = NULL;

//2 窗口处理函数

LRESULT CALLBACK WndProc( HWND hWnd,

						 UINT nMsg,

						 WPARAM wParam,

						 LPARAM lParam )

{

	//判断消息ID

	switch( nMsg )

	{

	case WM_DESTROY: //窗口销毁的消息

		PostQuitMessage( 0 ); //发送退出消息

		return 0;

	}

	//调用缺省的消息处理程序

	return DefWindowProc( hWnd, nMsg,

		wParam, lParam );

}

//3 注册窗口类型

BOOL MyRegister( LPSTR pszClassName )

{

	WNDCLASS wc = {0};

	ATOM  nAtom = 0;

	//构造注册窗口的参数

	wc.style         = CS_VREDRAW|CS_HREDRAW;

	wc.lpfnWndProc   = WndProc;

	wc.cbClsExtra    = 0;

	wc.cbWndExtra    = 0;

	wc.hInstance     = g_hInst;

	wc.hIcon         = NULL;

	wc.hCursor       = NULL;

	wc.hbrBackground = (HBRUSH)(COLOR_BTNFACE);

	wc.lpszMenuName  = NULL;

	wc.lpszClassName = pszClassName;

	//注册窗口

	nAtom = RegisterClass( &wc );

	if( 0 == nAtom )

	{

		MessageBox( NULL, "Register Failed",

			"Error", MB_OK|MB_ICONWARNING );

		return FALSE;

	}

	return TRUE;

}

//4 窗口创建

HWND MyCreate( LPSTR pszClassName )

{

	HWND hWnd = NULL;

	//创建窗口

	hWnd = CreateWindow( pszClassName,

		"HelloWnd", /*WS_OVERLAPPEDWINDOW*/WS_POPUP,

		0, 0, 800, 600, NULL, NULL,

		g_hInst,    NULL );

	if( NULL == hWnd )

	{

		MessageBox( NULL, "CreateWnd Failed",

			"Error", MB_OK );

		return NULL;

	}

	return hWnd;

}

//5 显示窗口

void DisplayWnd( HWND hWnd )

{

	//显示

	ShowWindow( hWnd, SW_SHOW );

	//刷新

	UpdateWindow( hWnd );

}

//6 消息处理

void Message( )

{

	MSG msg = { 0 };

	//消息循环处理,获取消息

	while( GetMessage( &msg, NULL, 0, 0 ) )

	{

		//派发消息

		DispatchMessage( &msg );

	}

}

//1 入口函数

int WINAPI WinMain( HINSTANCE hInst,

				   HINSTANCE hPrevInst,

				   LPSTR pszCmdLine,

				   int   nShowCmd )

{

	HWND hWnd = NULL;

	g_hInst = hInst;

	//注册窗口类型

	MyRegister( "MyWnd" );

	//创建注册类型的窗口

	hWnd = MyCreate( "MyWnd" );

	//显示窗口

	DisplayWnd( hWnd );

	//消息处理

	Message( );

	return 0;

}
巴特西

最简单的一个win32程序

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