[Rubycocoa-talk] objc type coersion

[Don Oh <dy...@ya...>]

Hi,
I'm relatively new to rubycocoa, encountered the
following error in my simple (first) test app using
rubycocoa:

In my NSDocumentController subclass,

def
openUntitledDocumentAndDisplay_error(displayDocument,
outError)

...
return
super_openUntitledDocumentAndDisplay_error(display,
outError);

end

I get the following runtime error message:

<MyDocumentController: 0x3dd560>2007-12-10
04:39:25.617 QTParse[20475:813]
MyDocumentController#openUntitledDocumentAndDisplay_error:
OSX::OCDataConvException: Cannot convert the argument
#1 as '^@' to Objective-C

/Builds/Debug/QTParse.app/Contents/Resources/MyDocumentController.rb:25:in
`super_openUntitledDocumentAndDisplay_error'

/Builds/Debug/QTParse.app/Contents/Resources/MyDocumentController.rb:25:in
`openUntitledDocumentAndDisplay_error'

/System/Library/Frameworks/RubyCocoa.framework/Resources/ruby/osx/objc/oc_wrapper.rb:51:in
`NSApplicationMain'

/Builds/Debug/QTParse.app/Contents/Resources/rb_main.rb:22

It appears the outError parameter needs to be
converted to the correct type before call into its
super method? Can somebody help please?

thanks,

-don