.net - How To Make My Form Respond to Ctrl-Alt, in C#? -

i have simple form in c#, has grid , several buttons.

i want form change gui bit, when ctrl-alt pressed, , have gui reverted original when ctrl-alt released.

i know how check if ctrl+alt pressed - 1 way via control.modifierkeys.

what ask this:

for button press, have event handler respond it. keyboard regular keys have event handler respond it. ctrl-alt not regular key - not raise event when pressed.

so should do?

one way thought about, enable timer run, , check every 200ms if ctrl-alt pressed.

is there better way timer?

thank you

you can override form's method pick keystroke.

 protected override bool processcmdkey(ref message msg, keys keydata)      {     if (keydata == (keys.control | keys.alt )      {        //do stuff here     }     return base.processcmdkey(ref msg,keydata);  }