How do i control KeyTip 'scoping' inside a Backstage panel?

Ribbon for WPF Forum

Posted 5 years ago by Anargyros Tomaras
Version: 14.1.0601
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What options do i have for defining my own custom KeyTip scoping rules?
Do i need to use TaskTabItems?
Can i flag any kind of Panel as a KeyTipScope and have it's children's KeyTips appear
when the Pane's Access Key is pressed?

Also, how come the KeyTip feature comes with the restriction that uielements need to inherit from a control that
implements IKeyTipTarget?
Wouldn't it be more flexible if it was solved using an Attached Property of type IKeyTipTarget so i can
KeyTip-Enable any kind of UIElement i want without having to build my own uielement inheritance structure?

Besides that, is there a way for me to know more technical details about this feature?

[Modified 5 years ago]

Comments (3)

Posted 5 years ago by Actipro Software Support - Cleveland, OH, USA
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We don't really have any documentation at the moment for extending to custom controls.  But you can use the KeyTipService.IsKeyTipScope to mark controls that are a scope.  And if an element supports key tips, it can implement IKeyTipTarget and should have the KeyTipService.KeyTipAccessText attached property set.  Sorry but the interface is needed since a method needs to be called on it.  I believe that if you do those things, you can get custom controls working with key tips.


Actipro Software Support

Posted 5 years ago by Anargyros Tomaras
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I understand that the interface is needed but i was wondering why instead of the KeyTipService doing a "UIElement as IKeyTipTarget" check only cant it also do a "UIElement.GetValue(KeyTipService.KeyTipTargetProperty) != null" check to figure out if an element supports tips? This way i can attach a KeyTipTarget implementation on my existing controls. Ofc the interface would change slightlly so it gets the actual element as parameter for example 

interface IKeyTipTarget { bool NotifyTipAccessed(UIElement element, string keyTipAccessText); }

Answer - Posted 5 years ago by Actipro Software Support - Cleveland, OH, USA
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At the time all the key tip logic was written (pre-Backstage), there wasn't really a place to inject custom controls into the Ribbon other than the controls we had pre-built, which implemented the interface.  Backstage allows a little more flexibility since you can put custom controls on the tabs.  Note that you don't need to use the interface though.  I believe key tips will still work with a control if it doesn't implement the interface, and it will fall back to focusing the control.


Actipro Software Support

The latest build of this product (v2018.1 build 0675) was released 1 month ago, which was after the last post in this thread.

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