Hello, simple question.
Exist some way to unselect any node selected:

Example some code for run when a click a button, make if any object in the diagram is selected be unselected.

Best regards.

Thank You stoyo!!

Merry X-MAS !

I have the problem with deactivate node in version 2.7. With older versions all works ok, but now when I click on the diagram area I catch the NodeDeactivated event but on the diagram node marked as activated. Also in the same time I stop the program on the breakpoint in the CanExecute event handler for the copy cmd and check the Diagram.ActiveItem property and see that it is null.
P.S.: when mouse is over the fake active item (BUT NOT CLICK) and after that I take away mouse cursor from this item, this item doesn't marked as active

Stoyo wrote on Jan 5^th, 2012 at 5:16pm:

Yes, active handlers stay as is. Selection handlers are grey and active handlers are white. So active handlers remains. When mouse is over the node but not click handlers change to grey color. And when mouse cursor leaves the node area, then node lost all handlers. But if I click to anothe node I see that old active node keeps the active handlers and real active node also has active handlers. NodeDeactivated handler:

            MainFrameWnd mainWnd = App.GetMainWnd();
            mainWnd.ClearProceesStructureSelection();
            ProcessOperationProp ctrl = mainWnd.m_PropsWnd.Content as ProcessOperationProp;
            if (ctrl != null) m_nOpCtrlTabSelectedIndex = ctrl.m_TabCtrl.SelectedIndex;
            mainWnd.m_PropsWnd.Content = null;
            m_PreviousActiveItem = null;
 

In this code mainWnd.ClearProceesStructureSelection() removes selection from the TreeViewItem in the Tree which placed into the left side of the Layout. ProcessOperationProp ctrl is the control in the bottom side of the Layout. It corresponds to the active node and showing active nove's properties. I can make the video to demonstrate the effect. The way to show you the code is hard because our application is strongly linked with the database and can't work without it. The base of the Layout is your example (FlowCharter). When I drag the node from the right side of the Layout and drop it into the diagram area this effect doesn't reproduce. But when I activate nodes by mouse clicks I see this effect

Are you also modifying the diagram selection from that ClearProceesStructureSelection method, or some event handler? If you copy property settings and event handlers from your project to the Flowcharter example, which one leads to the problem?

Also when I move code into SelectionChanged event handler as

                if (m_Diagram.Selection.Nodes.Count != 1 && !m_bNodeActivatedProcessing)
                {
                    ProcessOperationProp ctrl = App.GetMainWnd().m_PropsWnd.Content as ProcessOperationProp;
                    if (ctrl != null) m_nOpCtrlTabSelectedIndex = ctrl.m_TabCtrl.SelectedIndex;
                    App.GetMainWnd().m_PropsWnd.Content = null;
                }
 

all works OK

Thanks! Really when I add e.Node.Adorner.InvalidateVisual(); to the NodeDeactivated event handler all works as I need!