/// <summary>
/// 获取一个值，该值指示控件是否已捕获鼠标。
/// </summary>
/// <param name="hWnd">控件句柄。</param>
/// <returns>如果控件已捕获鼠标，则为 true；否则为 false。</returns>
public static bool GetCapture(IntPtr hWnd)
{
return(GetIsHandleCreated(hWnd) && (UnsafeNativeMethods.GetCapture() == hWnd));
}