LCIGmbH said:

would like to intercept the doubleclick on the contentpane's titlebar and toggle the fullscreen property instead of the docking property (like in VS2010).

 First it is important to note that this is not a one-to-one relationship between a floating window and a single ContentPane. 1 or more ContentPane instances are hosted within a PaneToolWindow when their PaneLocation is Floating or FloatingOnly. Note too that there is no fullscreen property in xamDockManager as that is essentially a mode in VS where by toolwindows (i.e. non-documents) are hidden and only documents are shown (which in the case of XDM would all be hosted within the DocumentContentHost).

With regards to intercepting the double click, there is no event surfaced for this so at best you would have to derive a class from PaneToolWindow, override the OnDoubleClickCaption and do your processing there. To use your derived PaneToolWindow you would need to derive from XamDockManager as well and override the CreatePaneToolWindow factory method.

LCIGmbH said:

How to detect the docking state of a contentpane e.g. docked, floating?

The PaneLocation indicates the location of a ContentPane.

LCIGmbH said:

How to detect the window state of a contentpane e.g. minimized, normal, maximized?

There is no window state of a ContentPane. 1 or more ContentPanes are hosted within a PaneToolWindow when their PaneLocation is Floating or FloatingOnly. The PaneToolWindow is what has a WindowState property. You may get the containing ToolWindow of a ContentPane using the ToolWindow.GetToolWindow static method and check its WindowState.

LCIGmbH said:

How to change the docking and window state?

The WindowState of a PaneToolWindow is a public property on the ToolWindow class (PaneToolWindow is a derived ToolWindow) so once you get the PaneToolWindow you can set the WindowState property.

There is no docking state property for a ContentPane as its state is based on where it is located and moving it requires setting up where it will be placed. The only exposed means of changing a pane's location are via it's available ContentPaneCommands - e.g. TogglePinnedState (flips the IsPinned property), ToggleDockedState (toggles between the docked and floating dockable states), ChangeToFloatingOnly (puts the pane into floating window that does not participate in the docking), etc. Aside from that you would need to remove the ContentPane from it's parent and parent it where you wanted it placed.

LCIGmbH said:

Thanks, that works although I would prefer a more direct approach without writing my own classes which inherits from yours

You should submit a feature request.

LCIGmbH said:

Anyway, the next problem is that once the window is maximized (even when using the maximize button, so this has nothing to do with my modification) when you select the title bar of the maximized window (single click, not drag or doublelick) the windowstate immediately changes back to "normal". First, this is not a normal behavior, I would expect it to be just selected. A doubleclick is normally always necessary to change the window state. Second: how to intercept this and change the behavior? (Should I open a question for that?)

Actually a double click is not necessarily necessary as the floating windows participate in docking so you need to be able to drag the window without first pulling it out of the maximized state. This is the same as what happens in VS 2010. That being said there was an issue with the initial 11.1 release where the drag was initiated immediately on the mouse down of the caption instead of waiting for the mouse to move beyond the drag threshold but that was addressed in the hotfix/service release currently available so you may want to download the latest hotfix/sr.