Key Modifiers
The ModifierKey property allows you to use a modifier key, which in combination with the mouse action opens the RadContextMenu. When setting the ModifierKey property you can choose among several available values:
Alt - specifies that the Alt button must be pressed, in order to open the RadContextMenu.
Apple - specifies that the Apple button must be pressed, in order to open the RadContextMenu.
Control - specifies that the Control button must be pressed, in order to open the RadContextMenu.
None - specifies that none of the buttons must be pressed, in order to open the RadContextMenu. (default)
Shift - specifies that the Shift button must be pressed, in order to open the RadContextMenu.
Windows - specifies that the Windows button must be pressed, in order to open the RadContextMenu.
Here is an example of a RadContextMenu that requires the Control button to be pressed in order to open.
<TextBox Width="200"
VerticalAlignment="Top">
<telerik:RadContextMenu.ContextMenu>
<telerik:RadContextMenu ModifierKey="Control">
...
</telerik:RadContextMenu>
</telerik:RadContextMenu.ContextMenu>
</TextBox>
If you run your application and just right-click the TextBox control, nothing will happen. The combination of holding the "Control" key and then right-clicking the button actually opens the RadContextMenu.