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RadSplitButton: How to get the Key pressen when DropDownClosed

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This is a migrated thread and some comments may be shown as answers.
Peter
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Peter asked on 10 Jun 2014, 02:41 PM
I'm using a WPF RadSplitButton and I'd like to to some special handling, when the DropDownClosed happens:

If the User presses ESC to close the dropped down content of my RadSplitButton, I'd like to do some undo operations. How do I get the Key that has caused the RadSplitBotton to close it's DropDown section?

In the Event Handler

        private void RadSplitButton_DropDownClosed(object sender, RoutedEventArgs e)
        {}

there is only RoutedEventArgs, which does not contain the pressed Button.

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Martin Ivanov
Telerik team
answered on 13 Jun 2014, 08:40 AM
Hi Peter,

In order to achieve your requirement you can use the Keyboard.IsKeyPressed() method. The method excepts a value from the Key enumeration and returns bool value. Here is an example:
private void splitBtn_DropDownClosed(object sender, RoutedEventArgs e)
{
    if (Keyboard.IsKeyDown(Key.Escape))
    {
        // do something
    }
}

If you want to get the explicit pressed key you can implement a method for this operation.
private Key GetPressedKey()
{
    var allKeys = Enum.GetValues(typeof(Key));
    Key pressedKey = Key.None;
    foreach (Key currentKey in allKeys)
    {
        if (currentKey != Key.None && Keyboard.IsKeyDown((Key)currentKey))
        {
            return currentKey;
        }
    }
    return pressedKey;
}

I hope this helps.

Regards,
Martin
Telerik
 
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Peter
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Martin Ivanov
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