API-2개의 타이머

2개의 타이머를 사용하는 예제,

#include <windows.h>

LRESULT CALLBACK WndProc( HWND, UINT, WPARAM, LPARAM );
HINSTANCE g_hInst;
LPCTSTR lpszClass = TEXT("TwoTimer");

int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
					 LPSTR lpszCmdParam, int nCmdShow )
{
	HWND hWnd;
	MSG Message;
	WNDCLASS WndClass;
	g_hInst = hInstance;

	WndClass.cbClsExtra = 0;
	WndClass.cbWndExtra = 0;
	WndClass.hbrBackground = (HBRUSH)GetStockObject( COLOR_WINDOW+1 );
	WndClass.hCursor = LoadCursor( NULL, IDC_ARROW );
	WndClass.hIcon = LoadIcon( NULL, IDI_APPLICATION );
	WndClass.hInstance = hInstance;
	WndClass.lpfnWndProc = WndProc;
	WndClass.lpszClassName = lpszClass;
	WndClass.lpszMenuName = NULL;
	WndClass.style = CS_HREDRAW | CS_VREDRAW;
	RegisterClass( &WndClass );

	hWnd = CreateWindow(lpszClass, lpszClass, WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
		NULL, (HMENU)NULL, hInstance, NULL );
	ShowWindow( hWnd, nCmdShow );

	while( GetMessage( &Message, NULL, 0, 0 ) )
	{
		TranslateMessage( &Message );
		DispatchMessage( &Message );
	}
	return (int)Message.wParam;
}

LRESULT CALLBACK WndProc( HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam )
{
	HDC hdc;
	PAINTSTRUCT ps;
	SYSTEMTIME st;
	static TCHAR sTime[128];
	static RECT rt = {100, 100, 400, 120};	// 특정 영역만 PAINT하기 위한 RECT

	switch( iMessage )
	{
	case WM_CREATE:
		SetTimer( hWnd, 1, 1000, NULL );		// 1초 간격 ID = 1
		SetTimer( hWnd, 2, 5000, NULL );		// 5초 간격 ID = 2
		SendMessage( hWnd, WM_TIMER, 1, 0 );
		return 0;
	case WM_TIMER:
		switch( wParam )// wParam에서 타이머의 ID에 따라서 각각 다른 일을 시킨다.
		{
		case 1:		// 매 초마다 변경된 시간을 출력
			GetLocalTime( &st );
			wsprintf( sTime, TEXT("지금 시간은 %d:%d:%d입니다."),
				st.wHour, st.wMinute, st.wSecond);
			InvalidateRect( hWnd, &rt, TRUE );
			break;
		case 2:
			MessageBeep(0);		// 5초에 한번씩 띵 소리
			break;
		}
		return 0;
	case WM_DESTROY:
		KillTimer( hWnd, 1 );	// 타이머가 2개라서, Kill도 2개
		KillTimer( hWnd, 2 );
		PostQuitMessage(0);
		return 0;
	case WM_PAINT:
		hdc = BeginPaint( hWnd, &ps );
		TextOut( hdc, 100, 100, sTime, lstrlen(sTime));
		EndPaint( hWnd, &ps );
		return 0;
	}
	return( DefWindowProc( hWnd, iMessage, wParam, lParam));
}​

// 실행 화면

매 초마다 시간을 갱신하고, 5초에 한번씩 띵 소리가 나게한다.