/// <summary>
/// 获取焦点句柄
/// </summary>
/// <param name="hwnd">窗体句柄</param>
/// <returns></returns>
private static Guithreadinfo?GetGuiThreadInfo(IntPtr hwnd)
{
if (hwnd == IntPtr.Zero)
{
return(null);
}
var threadId = GetWindowThreadProcessId(hwnd, IntPtr.Zero);
var guiThreadInfo = new Guithreadinfo();
guiThreadInfo.cbSize = Marshal.SizeOf(guiThreadInfo);
if (GetGUIThreadInfo(threadId, ref guiThreadInfo) == false)
{
return(null);
}
return(guiThreadInfo);
}
private static extern bool GetGUIThreadInfo(uint idThread, ref Guithreadinfo lpgui);
