Windows form on same screen as revit

[Gilles.Lagrilliere]

Hello

I made a plugin where a form appears if I click on my plugin button.

I work with a laptop and have two additional monitors.

the form always pop ups on my laptop screen, instead I want it to pop up on the screen where Revit is running.

How can I accomplish this?

I hope you guys can help me with this

thanks in advance!

[RPTHOMAS108 · Accepted solution]

Set the parent as Revit window via it's handle

Form.Show(Owner) or Form.ShowDialog(Owner) 

Then set Form.StartPosition to CenterParent.

[Omar_Amen]

Hi @RPTHOMAS108 ,
I don't know how can I get the (owner) Arg. from Revit API,
it's seems that it needs IWin32Window object but I don't know how to retrieve it

[Gilles.Lagrilliere]

hello

check this link out: https://thebuildingcoder.typepad.com/blog/2010/06/revit-parent-window.html

this helped me to get IWin32Window object.

[RPTHOMAS108]

Not used forms in a long while but I would probably try this:

 Public Function Obj_211130a(commandData As ExternalCommandData, ByRef message As String, elements As ElementSet) As Result

        Dim app = commandData.Application
        Dim uidoc = commandData.Application.ActiveUIDocument
        Dim IntDoc = uidoc.Document

        Dim F As New System.Windows.Forms.Form
        F.StartPosition = WF.FormStartPosition.CenterParent

        F.ShowDialog(New RvtWindow(app))

        Return Result.Succeeded
    End Function
    Public Class RvtWindow
        Implements Interop.IWin32Window

        Private IntHwnd As IntPtr
        Public Sub New(App As UIApplication)
            IntHwnd = App.MainWindowHandle
        End Sub

        Public ReadOnly Property Handle As IntPtr Implements IWin32Window.Handle
            Get
                Return IntHwnd
            End Get
        End Property
    End Class

[Omar_Amen]

thanks both worked 😊

[jeremy_tammik]

Note that the post from 2010 os obsolete and has been superseded by:

Two new properties in the Autodesk.Revit.UI namespace provide access to the handle of the Revit main window:

• UIApplication.MainWindowHandle
• UIControlledApplication.MainWindowHandle

https://thebuildingcoder.typepad.com/blog/2018/11/revit-window-handle-and-parenting-an-add-in-form.h...

[Gilles.Lagrilliere]

How do I make it work with the new properties?

I tried frm.ShowDialog(CommandData.Application.MainWindowHandle)

but that doesn't work.

Thanks in advance!

[jeremy_tammik]

You need to convert it to the appropriate data type. An example of how this can be done is provided by the module CmdJumpToRevitPosition.cs in The Building Coder samples:

      JtWindowHandle h = new JtWindowHandle( uiapp.MainWindowHandle );

      JumpToPosition jumper = new JumpToPosition( view, h );

Look at the description of updating The Building Coder samples to use MainWindowHandle:

https://thebuildingcoder.typepad.com/blog/2018/11/revit-window-handle-and-parenting-an-add-in-form.h...

Please read the blog post more carefully before asking further questions. I wrote it to avoid having to repeat myself.