如何将我的表单粘贴到第三方应用程序的窗口？

Question

我正在尝试将我的表单粘贴到另一个应用程序的窗口（比如说 Microsoft Outlook）。当我移动 Outlook 窗口时，我的表单应该仍然停留在它的右侧。

目前，我正在监视 Outlook 在 while(true) 循环中的位置（使用 sleep()）并调整我的表单位置。

这里有两个问题：

• 如果sleep() 的持续时间太短，那么检查 Outlook 的位置并经常调整我的表单会需要很多性能。
• 如果 sleep() 持续时间太长，我的表单在适应 Outlook 时太慢（它滞后）。

没有本地解决方案吗？

Answer 1

弗雷杜的回答几乎就是答案。

我在我的应用程序中使用了它，但遇到了异常“callbackoncollecteddelegate”。 要使其正常工作，必须将 WinEventProc 附加到属性上。

...
private NativeMethods.WinEventDelegate winEventProc;
private void Form1_Load(object sender, EventArgs e)
    {
        this.Width = 100;
        this.Height = 100;
        this.TopMost = true;
        int processId = Process.GetProcessesByName("OUTLOOK")[0].Id;

        //this will also be triggered by mouse moving over the process windows
        //NativeMethods.SetWinEventHook(EVENT_OBJECT_LOCATIONCHANGE, EVENT_OBJECT_LOCATIONCHANGE, IntPtr.Zero, WinEventProc, (uint)processId, (uint)0, WINEVENT_OUTOFCONTEXT);
        this.winEventProc = new NativeMethods.WinEventDelegate(WinEventProc);

        NativeMethods.SetWinEventHook(EVENT_SYSTEM_MOVESIZESTART, EVENT_SYSTEM_MOVESIZEEND, IntPtr.Zero, this.winEventProc, (uint)processId, (uint)0, WINEVENT_OUTOFCONTEXT);
    }
...

见CallbackOnCollectedDelegate at Application.Run(new Form1())

Answer 2

你必须钩住进程并监听事件

这应该给你一个很好的起点

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        private const uint WINEVENT_OUTOFCONTEXT = 0x0000;
        private const uint EVENT_OBJECT_LOCATIONCHANGE = 0x800B;

        private const uint EVENT_SYSTEM_MOVESIZESTART = 0x000A;
        private const uint EVENT_SYSTEM_MOVESIZEEND = 0x000B;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Width = 100;
            this.Height = 100;
            this.TopMost = true;
            int processId = Process.GetProcessesByName("OUTLOOK")[0].Id;

            //this will also be triggered by mouse moving over the process windows
            //NativeMethods.SetWinEventHook(EVENT_OBJECT_LOCATIONCHANGE, EVENT_OBJECT_LOCATIONCHANGE, IntPtr.Zero, WinEventProc, (uint)processId, (uint)0, WINEVENT_OUTOFCONTEXT);

            NativeMethods.SetWinEventHook(EVENT_SYSTEM_MOVESIZESTART, EVENT_SYSTEM_MOVESIZEEND, IntPtr.Zero, WinEventProc, (uint)processId, (uint)0, WINEVENT_OUTOFCONTEXT);
        }

        private void WinEventProc(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime)
        {
            Rect move = new Rect();

            if (eventType == EVENT_SYSTEM_MOVESIZESTART)
            {
                NativeMethods.GetWindowRect(hwnd, ref move);

                Debug.WriteLine("EVENT_SYSTEM_MOVESIZESTART");
            }
            else if (eventType == EVENT_SYSTEM_MOVESIZEEND)
            {
                NativeMethods.GetWindowRect(hwnd, ref move);

                Debug.WriteLine("EVENT_SYSTEM_MOVESIZEEND");
            }

            this.Left = move.Left;
            this.Top = move.Top;
        }
    }

    public struct Rect
    {
        public int Left { get; set; }
        public int Top { get; set; }
        public int Right { get; set; }
        public int Bottom { get; set; }
    }

    static class NativeMethods
    {
        [DllImport("user32.dll")]
        public static extern IntPtr SetWinEventHook(uint eventMin, uint eventMax, IntPtr hmodWinEventProc, WinEventDelegate lpfnWinEventProc, uint idProcess, uint idThread, uint dwFlags);

        public delegate void WinEventDelegate(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime);

        [DllImport("user32.dll")]
        public static extern bool GetWindowRect(IntPtr hwnd, ref Rect rectangle);
    }
}

Answer 3

您可以使用任何 Windows 挂钩函数 WH_GETMESSAGE、WH_GETMESSAGERET、WH_SYSMSGFILTER 或 WH_MSGFILTER。

在这种情况下，您会对WM_MOVE 和WM_MOVING 感兴趣，其中WM_MOVE 在窗口移动（也就是移动完成）后发送，WM_MOVING 在窗口移动时发送（并且所以你会得到很多）。

从阅读开始：

https://msdn.microsoft.com/en-us/library/windows/desktop/ms644959(v=vs.85).aspx