On May 31, 2011, at 21:00, Tito Ciuro wrote:

>>    [openPanel setAllowedFileTypes:[NSArray arrayWithObject:@"plist"]];
>>    [openPanel beginSheetForDirectory:NSHomeDirectory() file:nil 
>> modalForWindow:window modalDelegate:self 
>> didEndSelector:@selector(didEndImportSheet:returnCode:contextInfo:) 
>> contextInfo:NULL];

You're using the wrong methods for NSOpenPanel. These methods are for 
NSSavePanel, prior to 10.6.

For 10.5 compatibility, use the deprecated 
'beginSheetForDirectory:file:types:modalForWindow:modalDelegate:didEndSelector:contextInfo:'
 method and specify the file type array as a parameter.

Or for 10.6 only, use 'beginSheetModalForWindow:completionHandler:' in 
combination with 'setAllowedFileTypes:'.

Also see here:

        
http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/ApplicationKit/Classes/NSSavePanel_Class/Reference/Reference.html

under the 'setAllowedFileTypes:' method description, for a note about 
NSOpenPanel.


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