Need Help to handling Custom Control

 

Maybe you need to put DataGrid in PictureBox or Form and attach PictureBox.hwnd / Form.hwnd?

 

 

 

 

 

 

 

The only thing I can offer is a working sample in VB code.

 

    Dim Popup As CommandBar
    Dim settingsProperties As CommandBarPopup
    Dim settingsPropertiesHandle As CommandBarControlCustom
       
    If Button = 2 Then
        Set Popup = CommandBars.Add("Popup", xtpBarPopup)
        With Popup.Controls
            Set settingsProperties = .Add(xtpControlButtonPopup, 1, "Settings")
            Set settingsPropertiesHandle = settingsProperties.CommandBar.Controls.Add(xtpControlCustom, 2, "Settings")
                  settingsPropertiesHandle.Handle = picPropertyGridControl.hWnd
        End With
        Popup.ShowPopup
    End If

 

 

Remark:

picPropertyGridControl = Picturebox (with PropertyGrid control on it)

 

 

This produces:

 

 

 

 

Hope this helps you a little