EmbeddedWindow.cs

using System;
using System.Runtime.InteropServices;
using System.Threading;

namespace RYCBEditorX.Utils;
public static class SetWindow
{
    public static IntPtr intPtr;         //第三方应用窗口的句柄

    /// <summary>
    /// 调整第三方应用窗体大小
    /// </summary>
    public static void ResizeWindow()
    {
        ShowWindow(intPtr, 0);  //先将窗口隐藏
        ShowWindow(intPtr, 3);  //再将窗口最大化，可以让第三方窗口自适应容器的大小
    }

    /// <summary>
    /// 循环查找第三方窗体
    /// </summary>
    /// <returns></returns>
    public static bool FindWindow(string formName)
    {
        for (int i = 0; i < 1000; i++)
        {
            //按照窗口标题查找Python窗口
            IntPtr vHandle = FindWindow(null, formName);
            if (vHandle == IntPtr.Zero)
            {
                Thread.Sleep(10);  //每100ms查找一次，直到找到，最多查找10s
                continue;
            }
            else      //找到返回True
            {
                intPtr = vHandle;
                return true;
            }
        }
        intPtr = IntPtr.Zero;
        return false;
    }


    /// <summary>
    /// 将第三方窗体嵌入到容器内
    /// </summary>
    /// <param name="hWndNewParent">父容器句柄</param>
    /// <param name="windowName">窗体名</param>
    public static void SetParent(IntPtr hWndNewParent, string windowName)
    {
        ShowWindow(intPtr, 0);                 //先将窗体隐藏，防止出现闪烁
        SetParent(intPtr, hWndNewParent);      //将第三方窗体嵌入父容器                    
        Thread.Sleep(100);                      //略加延时
        ShowWindow(intPtr, 3);                 //让第三方窗体在容器中最大化显示
        RemoveWindowTitle(intPtr);             // 去除窗体标题
    }


    /// <summary>
    /// 去除窗体标题
    /// </summary>
    /// <param name="vHandle">窗口句柄</param>
    public static void RemoveWindowTitle(IntPtr vHandle)
    {
        long style = GetWindowLong(vHandle, -16);
        style &= ~0x00C00000;
        SetWindowLong(vHandle, -16, style);
    }


    #region API 需要using System.Runtime.InteropServices;

    [DllImport("user32.dll ", EntryPoint = "SetParent")]
    private static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);   //将外部窗体嵌入程序

    [DllImport("user32.dll")]
    public static extern IntPtr FindWindow(string lpszClass, string lpszWindow);      //按照窗体类名或窗体标题查找窗体

    [DllImport("user32.dll", EntryPoint = "ShowWindow", CharSet = CharSet.Auto)]
    private static extern int ShowWindow(IntPtr hwnd, int nCmdShow);                  //设置窗体属性

    [DllImport("user32.dll", EntryPoint = "SetWindowLong", CharSet = CharSet.Auto)]
    public static extern IntPtr SetWindowLong(IntPtr hWnd, int nIndex, long dwNewLong);

    [DllImport("user32.dll", EntryPoint = "GetWindowLong", CharSet = CharSet.Auto)]
    public static extern long GetWindowLong(IntPtr hWnd, int nIndex);

    #endregion
}