Creating User Controls that inherit from DocumentWindow

[Eddie Jenkins]

I am using the 2010.1.10.409 version of the Telerik.WinControls.UI assembly to utilize the new DocumentWindow and RadDock Manager.  I am creating a UserControl that inherits from DocumentWindow

using Telerik.WinControls.UI.Docking;

public class myControl : DocumentWindow { }

When I go into the design view to add controls I am only getting a blank gray screen.  Also when I updated my older user controls that inherited from DockPanel to now inherit from DocumentWindow, all of the controls that were on the form are now just listed in the gray screen, meaning that they are not showing the design and layout that the DockPanel originally gave me.

Is this a known issue?  Or is there something that I need to do to be able to have the design time support that the DockPanels had?

[Nikolay]

Hi Eddie Jenkins,

In the new RadDock control we changed the way UserControls are handled. Now you do not need to derive your user control from DockWindow, it should derive from UserControl. After you design the user control accoring to your preferences, you need to load it in RadDock as it is shown below:

this.radDock1.DockControl(new myStandardControl(), Telerik.WinControls.UI.Docking.DockPosition.Left);

 

Regards,
Nikolay
the Telerik team

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[Tim]

What happens if you want to set a DockPosition of Fill?  Currently I get an exception that states:

An unhandled exception of type 'System.ArgumentException' occurred in Telerik.WinControls.RadDock.dll

Additional information: Invalid DockTabStrip for a DockPosition.Fill operation.

So if i take your code and just add .Fill instead of .Left (or any other position) that is what I see.

Thank you again for the quick responses.

-Bill

[Tim]

EDIT / UPDATE:

So I have found this documentation : http://www.telerik.com/help/winforms/dock_objectcreatedockingmanager.html and understand that a ToolWindow needs to dock to something (you can't just have it fill the RadDock).  I also understand that when you use the .DockControl() method, the control that you are docking is created as a ToolWindow.  So in trying to get past the fact that you cannot dock a ToolWindow to the RadDock, and that .DockControl() only creates ToolWindows, I stumbled upon the HostWindow Control.

instead of:

myUserControl c = new UserControl();
radDock1.DockControl(c, DockPosition.Fill);

you can do this:

myUserControl c = new UserControl();

HostWindow host = new HostWindow(c,DockType.Document);

radDock1.DockWindow(host, DockPosition.Fill);

[Nikolay]

Hello Bill,

Indeed, you can fill a RadDock with your window if the window is a HostWindow and the DockType of this window is Document. I am glad to hear that you managed to find the solution for your case.

Kind regards,
Nikolay
the Telerik team

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