Re: NSTimer and trackpad and mouse clicks
Re: NSTimer and trackpad and mouse clicks
- Subject: Re: NSTimer and trackpad and mouse clicks
- From: Tom Jeffries <email@hidden>
- Date: Mon, 07 Nov 2011 16:55:33 -0800
Mark, to the best of my knowledge I'm using absolutely standard calls. I put the buttons on the interface using Interface Builder and set up IBAction calls to tell me when they are pressed. I set a breakpoint on the IBAction function and nothing happens until I release he mouse button. Here's one of the functions:
- (IBAction) key1 : (id) sender
{
[self RespondToKey : KEY_1];
}
I'm not sure what subclassing would do, the IBAction function is not called until the mouse button is released or you take your finger of the trackpad.
I'm no Mac guru, so it's entirely possible I'm missing something obvious.
On Mon, Nov 7, 2011 at 3:52 PM, Mark Pauley
<email@hidden> wrote:
You could make your own subclass and handle mouseDown...
What do you mean by 'it all stops'? If your sequencer stops when the mouse button is down, something is really wrong. The main thread ought not lock up under those circumstances.
On Nov 7, 2011, at 3:25 PM, Tom Jeffries wrote:
> I've got my CoreMIDI sequencer working fine under most circumstances. I use NSTimer to get a rough timing, then use properly computed times that I send to MIDIPacketListAdd to get the accurate timing. NSTimer is running a bit in advance of the correct time so that even if it's late the data gets to the right place in time.
>
> However, if I start the sequence playing, then use either the trackpad or a mouse to go to a button on the screen, and hold the trackpad or mouse button down, it all stops. I put a breakpoint on the IBAction function that responds to the mouse/trackpad click, and it is not called until the mouse is released or the finger comes off the trackpad. I've seen other programs handle this correctly, so there has to be a better way.
>
> What am I doing wrong?
>
> Thanks, Tom Jeffries
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