In addition to what Chris said, you should also check if the value changed. If
the self.inputOpenPanel value is true, and you only check for that, every frame
a new panel will be requested and opened.
On Aug 21, 2010, at 12:09 AM, Christopher Wright wrote:
>> I'am trying to write a simple QCPlugin that open an OpenPanel and return the
>> path to an output port.
>
> JeanMarc, you are already too talented! :)
>
>> - (BOOL) startExecution:(id<QCPlugInContext>)context
>> {
>>
>> if (self.inputOpenPanel==YES)
>> {
>> NSOpenPanel *myDearWindow =[NSOpenPanel openPanel];
>> if ([myDearWindow runModal] == NSOKButton)
>> {
>> NSArray *fileToOpen = [myDearWindow filenames];
>> self.outputPath=[fileToOpen objectAtIndex:0];
>> }
>>
>> }
>> return YES;
>> }
>>
>> i'am not very successful with this code, the plugin compile fine but the
>> openPanel doesn't open when the input port is set to TRUE.
>> Any Idea ?
>
>
> -startExecution:(id)context is called _before_ the composition is executing
> -- at that point in time, the input ports are usually undefined (their
> default values, or 0 / nil).
>
> Opening a panel automatically probably isn't a good idea (generating
> thumbnails and other mundane operations will be confusing to the user), but
> for a special case it might be ok. In that case, you might want to skip the
> if(self.inputOpenPanel == YES) check (but then it will always open).
>
> --
> Christopher Wright
> [email protected]
>
>
>
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