c#winform窗体鼠标穿透,做桌面小工具的来看看啦

Question

        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> 
        /// 设置窗体具有鼠标穿透效果 
        /// </summary> 
        public void SetPenetrate()
        {
            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);
        } 可能有很多淫分享过但还是忍不住来分享

Answer 1

连整个标题栏都穿透了，整个 Form 本身根本无法接受鼠标事件了，能改进一下吗？

Answer 2

可加键盘钩子
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics;namespace WebClick_Tool
{
    public class KeyPress_o
    {
        [StructLayout(LayoutKind.Sequential)]
        public class KeyBoardHookStruct
        {
            public int vkCode;
            public int scanCode;
            public int flags;
            public int time;
            public int dwExtraInfo;
        }
        //委托 
        public delegate int HookProc(int nCode, int wParam, IntPtr lParam);
        static int hHook = 0;
        public const int WH_KEYBOARD_LL = 13;
        //LowLevel键盘截获，如果是WH_KEYBOARD＝2，并不能对系统键盘截取，Acrobat Reader会在你截取之前获得键盘。 
        static HookProc KeyBoardHookProcedure;        //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);        public static void Hook_Start()
        {
            if (hHook == 0)
            {
                KeyBoardHookProcedure = new HookProc(KeyBoardHookProc);
                hHook = SetWindowsHookEx(WH_KEYBOARD_LL, KeyBoardHookProcedure,
                        GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), 0);
                //如果设置钩子失败. 
                if (hHook == 0)
                {
                    Hook_Clear();
                }
            }
        }        /// <summary>
        /// 取消钩子事件
        /// </summary>
        public static void Hook_Clear()
        {
            bool retKeyboard = true;
            if (hHook != 0)
            {
                retKeyboard = UnhookWindowsHookEx(hHook);
                hHook = 0;
            }
        }        public static int KeyBoardHookProc(int nCode, int wParam, IntPtr lParam)
        {
            if (nCode >= 0)
            {
                KeyBoardHookStruct kbh = (KeyBoardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyBoardHookStruct));
                Keys k = (Keys)Enum.Parse(typeof(Keys), kbh.vkCode.ToString());
                switch (k)
                {
                    case Keys.F2:
                        if (kbh.flags == 0)
                        {
                            // 这里写按下后做什么事
                            MainForm.FormMian.FormBorderStyle = FormBorderStyle.FixedSingle;//此处为Form的静态对象。也可以用委托
                        }
                        else if (kbh.flags == 128)
                        {
                            //放开后做什么事
                        }
                        return 1;
                }
            }
            return CallNextHookEx(hHook, nCode, wParam, lParam);
        }
    }
}

Answer 3

 MainForm.FormMian.FormBorderStyle = FormBorderStyle.FixedSingle;//此处为Form的静态对象。也可以用委托执行此处可以取消穿透

Answer 4

MainForm.FormMian是什么东东。
另外实现局部穿透怎么实现，比如说只穿透一个Picurebox.