Forcing a WPF tooltip to stay on the screen

Question

I have a tooltip for a Label and I want it to stay open until the user moves the mouse to a different control.

I have tried the following properties on the tooltip:<

Answer 1

If you want to specify that only certain elements in your Window have effectively indefinite ToolTip duration you can define a Style in your Window.Resources for those elements. Here is a Style for Button that has such a ToolTip :

    ...
    
        
        ...
    
    ...
    
    
    ...

One can also add Style.Resources to the Style to change the appearance of the ToolTip it shows, for example:

Note: When I did this I also used BasedOn in the Style so everything else defined for the version of my custom control with a normal ToolTip would be applied.