Re: Photoshop plugin with Cocoa UI problems
Re: Photoshop plugin with Cocoa UI problems
- Subject: Re: Photoshop plugin with Cocoa UI problems
- From: Frederik Slijkerman <email@hidden>
- Date: Thu, 11 Jun 2009 18:34:16 +0200
Hi Scott,
I'm already doing all of that (I studied your earlier post in the
message archive), but it looks like the modal window was the problem,
see my other message. Thanks anyway!
Best regards,
Frederik Slijkerman
Scott Andrew wrote:
Make sure your C function calls NSApplicationLoad() this is needed to
initialize Cocoa (including Cocoa runloops) from Carbon. Also make sure
you setup your autorelease pool in you plug-in's main entry function.
The plug-in I wrote had all objective C except the startup code.
Scott Andrew
On Jun 10, 2009, at 7:07 AM, Frederik Slijkerman wrote:
Hi all,
I'm trying to make a Photoshop plugin with a Cocoa user interface, but
I'm running into a persistent problem: after closing the plugin
window, Photoshop crashes 90% of the time with the following call stack:
#0 0xa04590d8 in _XHNDL_trapback_instruction
#1 0xbf800fac in ??
#2 0x917ea9a2 in __CFRunLoopDoObservers
#3 0x917ebcfc in CFRunLoopRunSpecific
#4 0x917eccd8 in CFRunLoopRunInMode
#5 0x969f42c0 in RunCurrentEventLoopInMode
#6 0x96aa7904 in GetNextEventMatchingMask
#7 0x96aa7766 in WNEInternal
#8 0x96aa76c5 in WaitNextEvent
I've tried every suggestion I could find. The main plugin is a Carbon
bundle that locates the Cocoa bundle that actually contains the core
plugin as suggested here:
http://furbo.org/2008/07/08/plug-ins-the-cocoa-way/
The Cocoa bundle exports a plugin entry point as a C function. The
Carbon bundle calls this from its own entry point using CFBundleCreate
/ CFBundleGetFunctionPointerForName, but it never releases the Cocoa
bundle since apparently Cocoa bundles should not be unloaded. The
whole idea behind this, as far as I can see, is that Photoshop unloads
the Carbon bundle, but does not unload the core Cocoa bundle.
Next, the Cocoa bundle calls NSApplicationLoad, displays an empty
window using [NSApp runModalForWindow], then closes the window and
returns. At this point, I get the aforementioned crash.
What am I doing wrong? Any pointers would be highly appreciated --
I've been staring at this for about three days now...
Best regards,
Frederik Slijkerman
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