Revit二次开发——非模态窗口

[摘要] 非模态窗口有一个好处，就是可以一直停留在程序之前，然后持续完成操作。但是在Revit二次开发中，非模态窗口也有几个注意事项。1、需要在

非模态窗口有一个好处，就是可以一直停留在程序之前，然后持续完成操作。但是在Revit二次开发中，非模态窗口也有几个注意事项。

1、需要在文档关闭的时候，把非模态窗口也关闭掉，不然会导致文档关闭，窗口还在这样奇怪的Bug。

2、非模态的窗口的事件需要在IExternalCommand里注册。

3、每个操作必须在外部事件里进行。

以下代码关注后两个注意事项，第一个用上Document事件即可解决。

首先在IExternalCommand注册事件。

 public class Command : IExternalCommand { public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements) { try {ExecuteEventHandler executeEventHandler = new ExecuteEventHandler("Creat Model Line");ExternalEvent externalEvent = ExternalEvent.Create(executeEventHandler);// show UIModelessView modelessView = new ModelessView(executeEventHandler, externalEvent); //窗口一直显示在主程序之前 System.Windows.Interop.WindowInteropHelper mainUI = new System.Windows.Interop.WindowInteropHelper(modelessView); mainUI.Owner = System.Diagnostics.Process.GetCurrentProcess().MainWindowHandle; modelessView.Show(); return Autodesk.Revit.UI.Result.Succeeded; } catch (Exception e) { message = e.Message; return Autodesk.Revit.UI.Result.Failed; } } }

然后写一个通用的外部事件。

 public class ExecuteEventHandler : IExternalEventHandler { public string Name { get;private set; } public Action<UIApplication> ExecuteAction { get; set; } public ExecuteEventHandler(string name) { Name = name; } public void Execute(UIApplication app) { if(ExecuteAction!=null) { try { ExecuteAction(app); } catch { } } } public string GetName() { return Name; } }

接下来，通过控件来实现创建构件。

public partial class ModelessView : Window { ExecuteEventHandler _executeEventHandler= null; ExternalEvent _externalEvent = null; public ModelessView(ExecuteEventHandler executeEventHandler,ExternalEvent externalEvent) { InitializeComponent(); _executeEventHandler = executeEventHandler; _externalEvent = externalEvent; } private void creatLine_Click(object sender, RoutedEventArgs e) { if(_externalEvent!=null) { _executeEventHandler.ExecuteAction = new Action<UIApplication>((app) => { if (app.ActiveUIDocument == null || app.ActiveUIDocument.Document == null) return; Document revitDoc = app.ActiveUIDocument.Document; using (Transaction transaction=new Transaction(revitDoc,"Creat Line1")) { transaction.Start(); Autodesk.Revit.DB.Line line = Autodesk.Revit.DB.Line.CreateBound(new XYZ(0, 0, 0), new XYZ(100, 0, 0)); SketchPlane sketchPlane = SketchPlane.Create(revitDoc, Plane.CreateByNormalAndOrigin(XYZ.BasisZ, XYZ.Zero)); revitDoc.Create.NewModelCurve(line as Curve, sketchPlane); transaction.Commit(); } }); _externalEvent.Raise(); } } private void creatLine2_Click(object sender, RoutedEventArgs e) { if (_externalEvent != null) { _executeEventHandler.ExecuteAction = new Action<UIApplication>((app) => { if (app.ActiveUIDocument == null || app.ActiveUIDocument.Document == null) return; Document revitDoc = app.ActiveUIDocument.Document; using (Transaction transaction = new Transaction(revitDoc,"Creat Line2")) { transaction.Start(); Autodesk.Revit.DB.Line line = Autodesk.Revit.DB.Line.CreateBound(new XYZ(0, 100, 0), new XYZ(100, 100, 0)); SketchPlane sketchPlane = SketchPlane.Create(revitDoc, Plane.CreateByNormalAndOrigin(XYZ.BasisZ, XYZ.Zero)); revitDoc.Create.NewModelCurve(line as Curve, sketchPlane); transaction.Commit(); } }); _externalEvent.Raise(); } } }

这就是一个简单的非模态窗口实现的办法。