C#-窗体鼠标穿透

来源：互联网发布：mpv for mac 如何安装编辑：程序博客网时间：2024/04/29 12:47
 #region 窗体鼠标穿透        private const uint WS_EX_LAYERED = 0x80000;        private const int WS_EX_TRANSPARENT = 0x20;        private const int GWL_STYLE = (-16);        private const int GWL_EXSTYLE = (-20);        private const int LWA_ALPHA = 0;        [DllImport("user32", EntryPoint = "SetWindowLong")]        private static extern uint SetWindowLong(        IntPtr hwnd,        int nIndex,        uint dwNewLong        );        [DllImport("user32", EntryPoint = "GetWindowLong")]        private static extern uint GetWindowLong(        IntPtr hwnd,        int nIndex        );        [DllImport("user32", EntryPoint = "SetLayeredWindowAttributes")]        private static extern int SetLayeredWindowAttributes(        IntPtr hwnd,        int crKey,        int bAlpha,        int dwFlags        );        /// <summary>        /// 声明委托类        /// </summary>        /// <param name="MsgStr"></param>        public delegate void FormCt();        /// <summary>        /// 定义委托        /// </summary>        public static FormCt Ct;        /// <summary>         /// 设置窗体具有鼠标穿透效果         /// </summary>         private void SetPenetrate()        {            if (this.InvokeRequired)            {                this.Invoke(Ct);            }            else            {                this.TopMost = true;                GetWindowLong(this.Handle, GWL_EXSTYLE);                SetWindowLong(this.Handle, GWL_EXSTYLE, WS_EX_TRANSPARENT | WS_EX_LAYERED);                SetLayeredWindowAttributes(this.Handle, 0, 100, LWA_ALPHA);            }        }        #endregion
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