Re: Simple printing hangs
Re: Simple printing hangs
- Subject: Re: Simple printing hangs
- From: James Walker <email@hidden>
- Date: Wed, 08 Apr 2009 10:05:48 -0700
I. Savant wrote:
On Apr 7, 2009, at 8:33 PM, James Walker wrote:
I want to print some text that will almost surely fit on one page. I
thought I could just set up a window without making it visible, and
print the content view of the window, with code like this:
How about running it in the debugger and pressing pause? You can
examine the call stack. My bet's on an infinite loop. Any takers? ;-)
Here's the call stack, none of which is my code except for the last line.
mach_msg_trap
mach_msg
CFRunLoopRunSpecific
CFRunLoopRunInMode
RunCurrentEventLoopInMode
ReceiveNextEventCommon
_AcquireNextEvent
_RunAppModalLoop
RunAppModalLoopForWindow
-[NSApplication _realDoModalLoop:peek:]
-[NSApplication runModalSession:]
-[NSConcretePrintOperation(NSInternal) _isCancelledAfterHandlingUserEvents]
-[NSView(NSPrintingInternal) _printForCurrentOperation]
-[NSConcretePrintOperation _renderView]
-[NSConcretePrintOperation runOperation]
-[MyController printInfo]
I tried to reproduce the problem in a toy app, and naturally I couldn't.
So apparently something that I didn't think was relevant, was.
Possibly the fact that this is running in an app with a Carbon event loop.
--
James W. Walker, Innoventive Software LLC
<http://www.frameforge3d.com/>
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