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multiple mouse buttons

Hi guys...

I'm trying to make my app differentiate between multiple mouse buttons held down at the same time.


My code basically goes like this (inside an NSView subclass):
-(void) handleMouseDown:(NSEvent *)e {
// here I need to determine which buttons were held down.
// problem is that [e buttonNumber] just gives me the index, not a bitmask.
}

-(void)mouseDown:(NSEvent *)e {
[self handleMouseDown:e];
}
- (void)rightMouseDown:(NSEvent *)e {
[self handleMouseDown:e];
}
- (void)otherMouseDown:(NSEvent *)e {
[self handleMouseDown:e];
}

Is there a maybe a Carbon function to get this info?
I've tried maintaining the flags myself, but when I'm in the middle of a drag it seems to ignore new buttons.

TIA,
Nicholas Francis
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