using System.Runtime.InteropServices;
using System.Windows;

using Autodesk.Revit.Attributes;

using Autodesk.Revit.DB;

using Autodesk.Revit.UI;

namespace ShrlAlgo.Addin.Test;
[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
public class MonitorPickObject : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
    {
        var uiApp = commandData.Application;
        var uiDoc = uiApp.ActiveUIDocument;
        var Doc = uiDoc.Document;
        //GlobalMouseWatcher wather = new GlobalMouseWatcher();
        try
        {
            var list = uiDoc.Selection.PickObjects(Autodesk.Revit.UI.Selection.ObjectType.Element, "");
            if (list!=null)
            {
                MessageBox.Show(list.Count.ToString());
            }
        }
        catch (Exception)
        {
        }
       
        return Result.Succeeded;
    }

    [DllImport("user32.dll", EntryPoint = "FindWindow")]
    internal static extern IntPtr FindWindow(string ClassName, string WindowNamw);
    [DllImport("user32.dll")]
    internal static extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, int lParam);
    internal const int WM_CLICK = 0x00f5;
    [DllImport("user32")]
    internal static extern bool EnumChildWindows(IntPtr window, EnumWindowProc callback, IntPtr lparam);
    internal delegate bool EnumWindowProc(IntPtr hWnd, IntPtr parameter);//回调函数
    [DllImport("user32.dll", EntryPoint = "FindWindowEx")]
    internal static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
    [DllImport("user32.dll")]
    internal static extern bool SetForegroundWindow(IntPtr hWnd);  //设置窗体获得焦点
    internal static IntPtr finish;
    public static void SetOk()
    {
        var Revit = Autodesk.Windows.ComponentManager.ApplicationWindow;
        if (Revit != IntPtr.Zero)
        {
            FindChildClassHwnd(Revit, IntPtr.Zero);
            SendMessage(finish, WM_CLICK, IntPtr.Zero, 0);
        }
    }

    private static bool FindChildClassHwnd(IntPtr hwndParent, IntPtr lParam)
    {
        var childProc = new EnumWindowProc(FindChildClassHwnd);
        var hwnd = FindWindowEx(hwndParent, IntPtr.Zero, "Button", "完成");
        if (hwnd != IntPtr.Zero)
        {
            finish = hwnd;
            return false;
        }
        EnumChildWindows(hwndParent, childProc, IntPtr.Zero);
        return true;
    }
}