Re: disabling right-mouse click and ctrl+click?
Re: disabling right-mouse click and ctrl+click?
- Subject: Re: disabling right-mouse click and ctrl+click?
- From: Khusro Jaleel <email@hidden>
- Date: Thu, 03 Mar 2005 16:26:33 +0000
Thanks so much Robert! I really appreciate that you provided some code
to help me do this. I understand what the code does so I just stuck it
into a subclass of NSTextView that the project was already using and
that did the trick.
I looked at field editors and read the documentation but I couldn't
figure out that if I did implement my own field editor, which methods
would I override. Maybe it's a stupid question but I am new enough to
cocoa that I didn't have a clue how to proceed from there.
Thanks again for your example,
Khusro
Robert Clair wrote:
CTRL+click still generates a right-click, how do I catch it and
discard it?
First off, this isn't true. It is a subtle point, but a left click
with the control key depressed generates an NSLeftMouseDown event with
the NSControlKeyMask bit set in the modifier flags and a right click
generates a NSRightMouseDown event. The reason that they appear to be
the same is that, by default, the event dispatching mechanism in the
window grabs both and calls
-[NSView menuForEvent:]
for the view that is receiving events. The default implementation of
-menuForEvent: returns the context menu. (To see that this is true,
implement a do-nothing version of -rightMouseDown in a subclass of
NSView. Notice that it gets called - and you get no context menu - for
a right click, but it isn't called for a control click.)
To remove the cut and paste you could make a subclass for NSTextField
or NSTextView and override -menuForEvent. Grab the menu, remove the
cut and paste items and pass it on.
- (NSMenu *)menuForEvent:(NSEvent *)event
{
NSMenu* contextMenu = [super menuForEvent: event];
// remove Cut
int itemIndex = [contextMenu indexOfItemWithTitle: @"Cut"];
if ( itemIndex >= 0 )
{
[contextMenu removeItemAtIndex: itemIndex];
}
// repeat for anything else you don't want
return contextMenu;
}
If you don't want any menu, just return nil.
Bob Clair
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