public static void SetThumbnailTooltip(IntPtr hWnd, string tooltip)
{
if (!isWindowsVistaOrGreater || hWnd != IntPtr.Zero)
{
TaskbarList.SetThumbnailTooltip(hWnd, tooltip);
}
}
/// <summary>
/// Sets the specified window's thumbnail tooltip.
/// </summary>
/// <param name="hwnd">The window.</param>
/// <param name="tooltip">The tooltip text.</param>
private static void SetThumbnailTooltip(this Form form, string tooltip)
{
HResult setThumbnailTooltipResult = TaskbarList.SetThumbnailTooltip(form.Handle, tooltip);
setThumbnailTooltipResult.ThrowIf();
}