/* cmd /V:ON
	SetEnv /Vista /x64 /Release
	cl "$F" /GS- /link /SUBSYSTEM:WINDOWS /nodefaultlib /entry:main user32.lib kernel32.lib
*/

#define UNICODE
#include <windows.h>
#include <tchar.h>

#define ARRAY_LENGTH(array) (sizeof(array)/sizeof(array[0]))

void ClickWindow(HWND hwnd)
{
	PostMessage(hwnd, WM_LBUTTONDOWN, MK_LBUTTON, 0);
	PostMessage(hwnd, WM_LBUTTONUP,   MK_LBUTTON, 0);
}

BOOL IsVClockWindow(HWND hwnd)
{
	const static TCHAR VCLOCK_WINDOW_TEXT[] = TEXT("VoiceClock");
	const static size_t VCLOCK_WINDOW_TEXT_LENGTH = ARRAY_LENGTH(VCLOCK_WINDOW_TEXT) - 1;

	TCHAR window_text[VCLOCK_WINDOW_TEXT_LENGTH + 1];
	GetWindowText(hwnd, window_text, ARRAY_LENGTH(window_text));
	window_text[VCLOCK_WINDOW_TEXT_LENGTH] = '\0';

	return CSTR_EQUAL == CompareString(LOCALE_NEUTRAL, 0,
		VCLOCK_WINDOW_TEXT, -1, window_text, -1);
}

BOOL CALLBACK FindVClockWindowCallback(HWND hwnd, LPARAM lParam)
{
	if(IsVClockWindow(hwnd)) {
		*reinterpret_cast<HWND*>(lParam) = hwnd;
		return FALSE;
	}
	return TRUE;
}

HWND FindVClockWindow()
{
	HWND hwnd = 0;
	EnumWindows(FindVClockWindowCallback, reinterpret_cast<LPARAM>(&hwnd));
	return hwnd;
}

int main()
{
	HWND hwndVClock = FindVClockWindow();
	if(hwndVClock)
	{
		ClickWindow(hwndVClock);
		return 0;
	}
	return 1;
}