C++win32窗口程序，判断一个窗口是否在指定窗口之上或者之下

话不多说，直接上代码

bool IsWindowAbove(HWND hHwnd, HWND hHwndCurrent) {
// 判断 hHwnd 是否在 hHwndCurrent 之上
	if(NULL == hHwnd || NULL == hHwndCurrent)
		return false;
	HWND hwndPrev = hHwndCurrent;

	while (hwndPrev != NULL) {

		hwndPrev = GetWindow(hwndPrev, GW_HWNDPREV);
		if (hwndPrev == hHwnd) {
			return true;
		}
	}

	return false;
}

bool IsWindowBelow(HWND hHwnd, HWND hHwndCurrent) {
	// 判断 hHwnd 是否在 hHwndCurrent 之下
	if(NULL == hHwnd || NULL == hHwndCurrent)
		return false;
	HWND hwndNext = hHwndCurrent;

	while (hwndNext != NULL) {

		hwndNext = GetWindow(hwndNext , GW_HWNDNEXT);
		if (hwndNext == hHwnd) {
			return true;
		}
	}

	return false;
}