c# - Visual Studio Extension KeyProcessor Alt Key -

cant event on alt+key. example alt+e. event firing e , alt, no alt+e mb problem in ikeyprocessorprovider? have usercontrol, , want used inner control buttonkeyproc.keydownevent+=.

[export(typeof(ikeyprocessorprovider))] [textviewrole(predefinedtextviewroles.document)] [contenttype("any")] [name("buttonprovider")] [order(before = "default")] internal class buttonprovider : ikeyprocessorprovider {     [importingconstructor]     public buttonprovider()     {     }      public keyprocessor getassociatedprocessor(iwpftextview wpftextview)     {         return new buttonkeyproc(wpftextview);     } }   internal class buttonkeyproc : keyprocessor {     internal static event keyeventhandler keydownevent;      public buttonkeyproc(itextview textview)     {     }      public override void keydown(keyeventargs args)     {         if (args.key == key.e && isalt)         {             if (keydownevent != null)             {                 keydownevent(this, args);             }         }                }      public bool isalt     {         { return keyboard.iskeydown(key.leftalt) || keyboard.iskeydown(key.rightalt); }     } 

the correct code. need used args.systemkey , keyboard.modifiers.

public override void keydown(keyeventargs args) {     if (args.systemkey == key.e && (keyboard.modifiers & modifierkeys.alt) != 0)     {                 }            }