Use performSelector:withObject:afterDelay:0 to push your response to the end of
the run loop, giving the UI a chance to update first. It's what I do when a
button (etc) is going to trigger something that won't be instantaneous, where
the button shouldn't keep showing in the pressed state while it happens.
On May 29, 2013, at 3:41 PM, Steve Mills wrote:
> I have an NSView subclass that's used to draw contents of a menu item. When I
> get a mouseUp in my view, I need to flash the hilite (I'm guessing just draw
> it a couple times with a short delay between draws), dismiss the menu and
> perform the action associated with the item. These seem like the right
> methods to use, but the menu is not closing before the action executes.
> What's a better way to do this? The MenuItemView sample app also has this
> problem when you click the Button.
>
> - (void)mouseUp:(NSEvent*)event
> {
> UNUSED_VAR(event);
>
> NSMenuItem* item = [self enclosingMenuItem];
> NSMenu* menu = [item menu];
>
> // On mouseUp, we want to dismiss the menu being tracked:
> [menu cancelTracking];
>
> // Then send the action to the target:
> SEL act = [item action];
> id targ = [item target];
>
> if(act != nil && targ != nil)
> // [NSApp sendAction:act to:targ from:item];
> // Temporarily sending the About menu item so it'll fire the About box:
> [NSApp sendAction:act to:targ from:[menu itemAtIndex:0]];
>
> // Copied from MenuItemView sample project. I don't think this is necessary:
> // [self setNeedsDisplay:YES];
> }
>
> --
> Steve Mills
> office: 952-818-3871
> home: 952-401-6255
> cell: 612-803-6157
>
>
>
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