九九乘法表

#include<Windows.h>

#define TextHeight 20
#define TextWdith 80

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPreInstance,LPSTR lpCmdLine,int nShowCmd)
{
	static TCHAR szAPPName[] = TEXT("MyWindows");
	HWND hwnd;
	MSG msg;
	WNDCLASS wndclass;

	wndclass.style = CS_HREDRAW | CS_VREDRAW;
	wndclass.hInstance = hInstance;
	wndclass.lpfnWndProc = WndProc;
	wndclass.cbClsExtra = 0;
	wndclass.cbWndExtra = 0;
	wndclass.hIcon = LoadIcon(NULL,IDI_APPLICATION);
	wndclass.hCursor = LoadCursor(NULL,IDC_ARROW);
	wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wndclass.lpszClassName = szAPPName;
	wndclass.lpszMenuName = NULL;

	if(!RegisterClass(&wndclass))
	{
		MessageBox(NULL,TEXT("这个程序需要在 windows NT 下菜能执行！"),TEXT("错误"),MB_OK | MB_ICONERROR);
		return 0;
	}

	hwnd = CreateWindow(szAPPName,TEXT("Windows编程练习"),WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);

	ShowWindow(hwnd,nShowCmd);

	UpdateWindow(hwnd);

	while(GetMessage(&msg,NULL,0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	return msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wparam,LPARAM lparam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	RECT rect;
	TCHAR szBuffer[128];
	int i,j,mul;
	TCHAR szStrings[] = TEXT("九九乘法表");

	switch(message)
	{
/*
	case WM_PAINT:
		hdc = BeginPaint(hwnd,&ps);
		GetClientRect(hwnd,&rect);
		DrawText(hdc,TEXT("This is my first window !"),-1,&rect,DT_VCENTER | DT_CENTER | DT_SINGLELINE);
		EndPaint(hwnd,&ps);
		return 0;
*/
	case WM_PAINT:
		hdc = BeginPaint(hwnd,&ps);
		TextOut(hdc ,0,10,szStrings,lstrlen(szStrings));
		for(i = 1;i < 10;i++)
		{
			for(j = 1;j <= i;j++)
			{
				mul = i*j;
				wsprintf(szBuffer,TEXT("%d x %d = %d   "),i,j,i*j);
				TextOut(hdc,TextWdith*(j - 1),20 + TextHeight*i,szBuffer,lstrlen(szBuffer));
			}

		}

		EndPaint(hwnd,&ps);
		return 0;

	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;


	default:
		return DefWindowProc(hwnd,message,wparam,lparam);

	}
}