simple.c

win32ASM教程

#include <windows.h>

static char szWindowClass[]="SIMPLE";

LRESULT CALLBACK WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nShowCmd)
{
	WNDCLASSEXA wcex;
	HWND hWnd;
	MSG msg;
	if(!hPrevInstance)
	{
		wcex.cbSize=sizeof(WNDCLASSEXA);
		wcex.style=CS_HREDRAW|CS_VREDRAW;
		wcex.cbClsExtra=0;
		wcex.cbWndExtra=0;
		wcex.lpfnWndProc=WndProc;
		wcex.hInstance=hInstance;
		wcex.hIcon=LoadIconA(hInstance,IDI_APPLICATION);
		wcex.hCursor=LoadCursorA(0,IDC_ARROW);
		wcex.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
		wcex.lpszMenuName=NULL;
		wcex.lpszClassName=szWindowClass;
		wcex.hIconSm=LoadIconA(hInstance,IDI_APPLICATION);
		if(!RegisterClassExA(&wcex)) return FALSE;
	}
	hWnd=CreateWindowExA(0,szWindowClass,"SIMPLE",WS_OVERLAPPEDWINDOW,
						 CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
						 0,0,hInstance,NULL);
	if(!hWnd) return FALSE;
	ShowWindow(hWnd,nShowCmd);
	UpdateWindow(hWnd);
	while(GetMessageA(&msg,0,0,0))
	{
		TranslateMessage(&msg);
		DispatchMessageA(&msg);
	}
	return msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)
{
	HDC hDC;
	PAINTSTRUCT ps;
	switch(message)
	{
	case WM_PAINT:
		hDC=BeginPaint(hWnd,&ps);
		EndPaint(hWnd,&ps);
		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	default:
		return DefWindowProcA(hWnd,message,wParam,lParam);
	}
	return -1;
}