add minimized to tray
add test keyboard hook, the app can response to a single key event well now, but not a combination like CTRL+A
key combination works now! Hurray!
since I can't call captureImage() directly from gkh_KeyUp() (exceptions!!!), I have to run it on a new thread. It works now, except that no info is printing to the listbox atm, and the code is a mess
Clean up code, add form icon, add exception handling to keys event callback. Everything's working good now, except if you take 2 images quickly in succession, it will throw an exception. Guess I can live with it.