CGEventPost - hold a key (shift)

I'm looking for a way to design a little panel with modifier keys on it (shift, command for example) and have to possibility to click on it like a virtual keyboard.

I'd like it to have this behavior :

• click on the virtual key (shift).
• the shift button holds, and keeps being pressed.
• type something with my standard keyboard.
• click another time on the virtual shift key to release it.

here is the code I'm using :

CGEventSourceRef source = CGEventSourceCreate(kCGEventSourceStateHIDSystemState); CGEventRef shiftKeyDown = CGEventCreateKeyboardEvent(source, (CGKeyCode)56, YES); CGEventRef shiftKeyUp = CGEventCreateKeyboardEvent(source, (CGKeyCode)56, NO);  CGEventPost(kCGAnnotatedSessionEventTap, shiftKeyDown); CGEventPost(kCGAnnotatedSessionEventTap, shiftKeyUp);  CFRelease(shiftKeyUp); CFRelease(shiftKeyDown); CFRelease(source); 

I can't find a way to keep it pressed until I click on it another time. I though "Push On Push Off" Button Cell type was the key but unfortunately no. :-)

any help ?

thanks in advance.

0 Answers

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