In my case, my window has no title bar and no frame, I do dragging window by
myself.
In the NSView in the window
- (void)mouseDown:(NSEvent*)event {
self.mouse = [event locationInWindow];
}
- (void)mouseDragged:(NSEvent *)event {
NSPoint location = [NSEvent mouseLocation];
location.x -= self.mouse.x;
location.y -= self.mouse.y;
[[self window] setFrameOrigin:location];
[self setNeedsDisplay:YES]; // Do something here
}
then I can do anything during dragging.
Yoshiaki Katayanagi
http://www.jizoh.jp/english.html
2015/12/18 9:32、Cem Karan <[email protected]> wrote:
> Hi all, I'm working on an application that has one primary window and
> multiple support windows. The support windows show auxiliary information for
> what is in the primary window, but not off to the side; they are more like
> color filters or X-ray glasses. You slide them over the primary, and they
> show their extra information. To get an idea of what I'm talking about,
> clone https://github.com/ckaran/glfw/tree/transparent_windows, (that's the
> 'transparent_windows' branch) build it, and run the example that corresponds
> to
> https://github.com/ckaran/glfw/blob/transparent_windows/examples/filters.c.
> You'll get 3 windows, red, green, and blue. As you drag the blue window over
> the red one, a triangle will be drawn on the blue window that is centered on
> the red window.
>
> All that works, but the problem is that I'm not getting window positions
> quickly enough; as long as a window is being dragged, it won't send out a
> notification about its position, which means all the windows get out of sync
> with one another. This is annoying. I traced it down to the OS X code by
> logging where the windows thought they were, so I know it really is Cocoa and
> not GLFW. I tried polling the position of the window, but that doesn't work
> (the polling is happening, but it prints the same position continuously until
> dragging stops). So, how do I get the window to update where it actually,
> truly is at the moment I ask it?
>
> Thanks,
> Cem Karan
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