【编程问答】通过快捷键取消透明+透过无效麻烦

我想使用C＃制作一个可以透明+滑过鼠标的窗口，但是我遇到了一些问题。

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Runtime.InteropServices;

using System.Reflection;

using System.Diagnostics;



namespace Easy

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        public delegate int HookProc(int nCode, int wParam, IntPtr lParam);

        static int hHook = 0;

        public const int WH_KEYBOARD_LL = 13;

        HookProc KeyBoardHookProcedure;





        private void Form1_Load(object sender, EventArgs e)

        {

            this.Opacity = 0.8;

            this.TopMost = true;

            this.ShowInTaskbar = true;

            this.WindowState = FormWindowState.Normal;

            SetWindowLong(Handle, GWL_EXSTYLE, GetWindowLong(Handle, GWL_EXSTYLE) | WS_EX_LAYERED);

            SetLayeredWindowAttributes(Handle, 0, 128, LWA_ALPHA);

        }









        [StructLayout(LayoutKind.Sequential)]

        public class KeyBoardHookStruct

        {

            public int vkCode;

            public int scanCode;

            public int flags;

            public int time;

            public int dwExtraInfo;

        }

        #region DllImport

        //设置钩子   

        [DllImport("user32.dll")]

        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]

        //抽掉钩子   

        public static extern bool UnhookWindowsHookEx(int idHook);

        [DllImport("user32.dll")]

        //调用下一个钩子   

        public static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam);



        [DllImport("kernel32.dll")]

        public static extern int GetCurrentThreadId();



        [DllImport("kernel32.dll")]

        public static extern IntPtr GetModuleHandle(string name);

        [DllImport("user32.dll", EntryPoint = "GetWindowLong")]

        public static extern long GetWindowLong(IntPtr hwnd, int nIndex);

        [DllImport("user32.dll", EntryPoint = "SetWindowLong")]

        public static extern long SetWindowLong(IntPtr hwnd, int nIndex, long dwNewLong);

        [DllImport("user32", EntryPoint = "SetLayeredWindowAttributes")]

        public static extern int SetLayeredWindowAttributes(IntPtr Handle, int crKey, byte bAlpha, int dwFlags);

        const int GWL_EXSTYLE = -20;

        const int WS_EX_TRANSPARENT = 0x20;

        const int WS_EX_LAYERED = 0x80000;

        const int LWA_ALPHA = 2;



        #endregion

        #region 自定义事件

        public void Hook_Start()

        {

            // 安装键盘钩子   

            if (hHook == 0)

            {

                KeyBoardHookProcedure = new HookProc(KeyBoardHookProc);

                hHook = SetWindowsHookEx(WH_KEYBOARD_LL,

                KeyBoardHookProcedure,

                GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), 0); 

                if (hHook == 0)

                {

                    Hook_Clear();

                    //throw new Exception("设置Hook失败!");  

                }

            }

        }



        //取消钩子事件   

        public void Hook_Clear()

        {

            bool retKeyboard = true;

            if (hHook != 0)

            {

                retKeyboard = UnhookWindowsHookEx(hHook);

                hHook = 0;

            }

            //如果去掉钩子失败.   

            if (!retKeyboard) throw new Exception("UnhookWindowsHookEx failed.");

        }

       

        public static int KeyBoardHookProc(int nCode, int wParam, IntPtr lParam)

        {

            if (nCode >= 0)

            {

                KeyBoardHookStruct kbh = (KeyBoardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyBoardHookStruct));

                if (kbh.vkCode == (int)Keys.Y && (int)Control.ModifierKeys == (int)Keys.Control + (int)Keys.Alt)

                { MessageBox.Show("x");

                SetWindowLong(lParam, GWL_EXSTYLE, GetWindowLong(lParam, GWL_EXSTYLE));

                }

            }

            

            return CallNextHookEx(hHook, nCode, wParam, lParam);  

        }





        private void button1_Click(object sender, EventArgs e)

        {

            Hook_Start();

            SetWindowLong(Handle, GWL_EXSTYLE, GetWindowLong(Handle, GWL_EXSTYLE) | WS_EX_TRANSPARENT | WS_EX_LAYERED);



        }



        private void button2_Click(object sender, EventArgs e)

        {

 

            Hook_Clear();  

        }



    }

}

        #endregion

此程序有两个问题

1。用快捷键调用全局挂钩后，该消息框将弹出两次，第一个消息框将迅速弹出，第二个消息框将需要等待大约3s

2，使用快捷键取消透明度+透明失效

谢谢，请帮助我进行分析。

--------------------编程问题与解答--------------------

不理解，帮顶--------编写问题解答------------------- ---------------------编程问题与解答--------------------有这样的麻烦吗？将表单this.TransparencyKey设置为Transparent

很容易将控件放入其中，例如RICHTECTBOX，WEBBRER等。通过窗口根本没有问题。 --------------------编写问题与解答--------------------引用denqh的回覆3日楼：是的，麻烦吗？将表单this.TransparencyKey设置为Transparent

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