Stop dragging my <NSWindow> around
Stop dragging my <NSWindow> around
- Subject: Stop dragging my <NSWindow> around
- From: Ken Tabb <email@hidden>
- Date: Thu, 3 Feb 2005 13:32:31 +0000
... to hijack a Stevie Nicks song title...
Hi folks,
I'm still trying to implement window snap-to-edge functionality with my
panels (further to my "mouseDown/Up on window's titlebar?" post).
Although the window doesn't get mouseDown / mouseUp called by default
when you click / release the titlebar, overriding your window's
-sendEvent: allows you to catch all mouseDowns / mouseUps.
So in my event loop I am filtering out mouseDragged events. For every
other type of event I call [super sendEvent:], but I do not call super
for mouseDragged. On a mouseDragged event in my event loop, no code
runs at all (not even the 'default' section of the switch).
My aim is to prevent the window from being dragged automatically by the
OS / Window Server / Cocoa... I want complete control of where the
window is being moved. Otherwise, you get the OS doing its thing, then
your code doing your thing (or vice versa), resulting in juddery
movement during each stage of a drag. So at the moment I'm trying to
prevent my window from being moved automatically during a drag. Once I
know the window is stationary I can go about adding code to move it
appropriately, in the knowledge that nothing else is interfering.
However, despite trying to block all attempts by Cocoa to move my
window around when I drag on the titlebar, it's still moving happily
around the screen (as per a normal panel when you drag the titlebar).
It's definitely not my event loop doing it, and my notification methods
are all blank (and not calling [super makeHimGoMad] etc.), so does
anyone know what it is that's causing the window to move around? I'm
guessing the window server, but if this is the case, how do I go about
tell it to leave off my window?
Please tell me if I'm barking up the wrong tree!
Ken
p.s. it's my intention to upload the source code when I get
window-snapping working. And maybe an accompanying book...
- - - - - - - - - -
Dr. Ken Tabb
Mac & UNIX Developer - Health & Human Sciences
Machine Vision & Neural Network researcher - School of Computer Science
University of Hertfordshire, UK
http://www.health.herts.ac.uk/ken/
Certified non-Microsoft Solution Provider
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