Dockable window going empty

[laurence.roijackers]

Hello,

I've been trying to add a dockable window to an Addin I'm writing in VB.net but I have the same problem when I use iLogic and I figured it's easier to show an example in iLogic.

My problem is that the contents of the window disappear after a few seconds.

I think I've run into the same problem as: https://forums.autodesk.com/t5/inventor-ilogic-and-vb-net-forum/addin-dockable-window/m-p/6285785#M6...

But there never was an answer to that specific problem. I used this to make an example in iLogic: https://forums.autodesk.com/t5/inventor-ilogic-and-vb-net-forum/dockable-window/td-p/9350921

When I run this code, it does add the dockable window. It also show the text, but after a random numbers of seconds the textbox disappears. Running the rule again makes it show, but it will still disappear again.

Dim oUserInterFaceManager As UserInterfaceManager
Dim _DockableWindows As DockableWindows
Dim oDockableWindowsEvents As DockableWindowsEvents
Dim oWindow As DockableWindow
Dim ContentTextBox As System.Windows.Forms.TextBox
Dim InstanceFound As Boolean

            oUserInterFaceManager = ThisApplication.UserInterfaceManager
            _DockableWindows = oUserInterFaceManager.DockableWindows
			
			            ContentTextBox = New System.Windows.Forms.TextBox With {
                .ReadOnly = True,
                .Multiline = True
            }
			
			ContentTextBox.Text="Hi there"
			
				For Each WindowInstance As DockableWindow In _DockableWindows
			
				If WindowInstance.Title = "DockableWindow" Then

					WindowInstance.AddChild(ContentTextBox.Handle.ToInt64())

					InstanceFound = True
					
					End If
				
				Next
			
			If InstanceFound = False Then
			oWindow = oUserInterFaceManager.DockableWindows.Add("SomeOtherSortOfCliendId", "DockableWindowInternalName", "DockableWindow")
			oWindow.AddChild(ContentTextBox.Handle.ToInt64())	
		End If

[laurence.roijackers · Accepted solution]

I think I found an answer, although I still don't understand it.

When I add an Statusstrip it works:

Dim oUserInterFaceManager As UserInterfaceManager
Dim _DockableWindows As DockableWindows
Dim oDockableWindowsEvents As DockableWindowsEvents
Dim oWindow As DockableWindow
Dim StatusStrip As System.Windows.Forms.StatusStrip
Dim InstanceFound As Boolean

            oUserInterFaceManager = ThisApplication.UserInterfaceManager
            _DockableWindows = oUserInterFaceManager.DockableWindows
			
			            StatusStrip = New System.Windows.Forms.StatusStrip

			
				For Each WindowInstance As DockableWindow In _DockableWindows
			
				If WindowInstance.Title = "DockableWindow" Then

					WindowInstance.AddChild(StatusStrip.Handle.ToInt64())

					InstanceFound = True
					
					End If
				
				Next
			
			If InstanceFound = False Then
			oWindow = oUserInterFaceManager.DockableWindows.Add("SomeOtherSortOfCliendId", "DockableWindowInternalName", "DockableWindow")
			oWindow.AddChild(StatusStrip.Handle.ToInt64())	
		End If

Of couse the Ilogic example doesn't make sense anymore, but it also works for the vb.net addin. Where I can add more than just the Statusstrip, although I don't use the StatusStrip.

But why do I need to add the StatusStrip?