Silverlight Tip of the Day #8 – Detecting Alt, Shift, Control, Window & Apple Keys Combinations

Snowman — Thu, 29 Apr 2010 17:01:34 +0000

When mouse clicking or typing a key in your Silverlight application how do you know if any combination of the , , , and/or keys are down as well?

To accomplish this you simply need to check the Keyboard.Modifiers member which returns a ModifierKeys object.

The following code demonstrates how to get this object and how to check if any of these keys have been pressed:

ModifierKeys keys = Keyboard.Modifiers;

bool shiftKey = (keys & ModifierKeys.Shift) != 0;

bool altKey = (keys & ModifierKeys.Alt) != 0;

bool appleKey = (keys & ModifierKeys.Apple) != 0;

bool controlKey = (keys & ModifierKeys.Control) != 0;

bool windowsKey = (keys & ModifierKeys.Windows) != 0;

Demo:

[silverlight: Tip8_ModiferKeys.xap]

Thank you,

–Mike

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