(solved) Making a button show a menu when clicked

FROM : Matt Gemmell
DATE : Sun Jan 26 14:21:31 2003

On Saturday, January 25, 2003, at 07:08  pm, Matt Gemmell wrote:

> 1. The first method does not position the menu consistently, since
> it's just popping up a menu as if the user has control-clicked. I want
> the menu to always appear such that its top-left is just below the
> view's bottom-left point; i.e. the way that a menu appears relative to
> its title in the menubar.


Solved by creating a new NSEvent with the same values as the received
event in mouseDown:, except that I passed in my own location value (the
origin of my NSButton subclass' frame), like this:

- (void)mouseDown:(NSEvent *)theEvent
{
    [self highlight:YES];
    NSEvent *click = [NSEvent mouseEventWithType:[theEvent type]
                                        location:[self frame].origin
                                    modifierFlags:[theEvent
modifierFlags]
                                        timestamp:[theEvent timestamp]
                                    windowNumber:[theEvent windowNumber]
                                          context:[theEvent context]
                                      eventNumber:[theEvent eventNumber]
                                      clickCount:[theEvent clickCount]
                                        pressure:[theEvent pressure]
        ];
    [NSMenu popUpContextMenu:[self menu] withEvent:click forView:self];
}

That makes the menu appear in the proper position every time.

> 2. Both methods don't perform highlighting of the image (the usual
> grey semi-transparent overlay which indicates a control is active).
> Similarly, they don't dim when disabled.


Solved by using an NSButton subclass, setting it to have no border,
setting it to highlight by NSNoCellMask, and letting it draw itself -
thanks to Rudis Muiznieks.

Source to follow soon on my site.

Best,
-Matt

--
Matt Gemmell
Scotland Software
http://www.scotlandsoftware.com/
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