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wpfdialogcommandmouseeventrouted-commands

Show dialog box on shift double click

My WPF application has a TextBlock control in it. I want to display an "easter egg" when the user holds down the shift key and right double clicks on it.

I've added a RoutedUiCommand to a static class in my application where I've defined all of the commands. I've added a command binding for my new command:

<UserControl.CommandBindings>
    <CommandBinding CanExecute="ShowDiagnostics_CanExecute" Command="cs:CarSystemCommands.ShowDiagnostics"  Executed="ShowDiagnostics_Executed" />
</UserControl.CommandBindings>

When I created the RoutedUiCommand, I specified a MouseGesture of RightDoubleClick with a ModifierKey of Shift. So far so good.

How do I associate the command with the TextBlock?

Solution

  • What I ended up doing was to move the CommandBinding from the UserControl.Resources to the TextBlock:

    <TextBlock ...>
    <TextBlock.CommandBindings>
        <CommandBinding CanExecute="ShowDiagnostics_CanExecute" Command="cs:CarSystemCommands.ShowDiagnostics"  Executed="ShowDiagnostics_Executed" />
    </TextBlock.CommandBindings>
</TextBlock>

    Now, nothing happens until you hold down the shift key & right double click on the TextBlock.

    I gave the other answers up votes because they'll work, too.