Dockable Windows - OnClose Event?

[MattH_Work]

I can successfully create a dockable window (browser), which then displays my user form correctly using similar code to this

Dim oUserInterfaceMgr As UserInterfaceManager
oUserInterfaceMgr = m_inventorApplication.UserInterfaceManager
oWindow = Nothing
Try
oWindow = oUserInterfaceMgr.DockableWindows.Add(m_ClientId, "String1", "String2")
Catch
oWindow = oUserInterfaceMgr.DockableWindows.Item("String1")
End Try
oWindow.AddChild(oForm.Handle)
oWindow.DisabledDockingStates = DockingStateEnum.kDockTop + DockingStateEnum.kDockBottom
oWindow.DockingState = DockingStateEnum.kDockLeft
oWindow.SetMinimumSize(oWindow_Height, oWindow_Width)
oWindow.Visible = True

However, if I close the dockable window in Inventor and reopen it, it still displays the form with its current settings, rather than the original base form. The form seems to be still open, even if the window is not

How do I send a signal to my form to fully close when the user clicks the dockable windows 'X' button?

In essence, is there an onclose event for dockable windows

Regards

MattH

[YuhanZhang]

You can use the OnHide event in this case.

[MattH_Work]

What would be the simplest way to implement an OnHide event for a dockable window

[YuhanZhang]

In UI when you click the 'x' button it just hides the dockable window/browser but not close/delete it, when you click the '+' button you can see a dropdown list and choose one browser/dockable window to display will make it visible. So you can see the API side exposes the DockableWindowsEvents.OnHide/OnShow events for the behavior. And I attached a simple VBA sample to demonstrate how to use them, you can load the IVB and run the DockableWinShowHideSample function, and then show/hide the dockable windows to see the  events are fired.

[MattH_Work]

The ZIP file seems to be emtpy

[YuhanZhang]

Re-attached it, please check it.