On Jan 7, 2014, at 9:57 PM, Peter Teeson wrote:
> OS X 10.8.5, Xcode 5.0.2, Document app
>
> In my app I have this:
> @interface Guess : NSTextField // populated programmatically
> …
> -(void)check; // method to programatically use the Service "Look Up In
> Dictionary"
> @end
>
> @implementation Guess
> ...
> -(void)check { // Lookup word in dictionary
> [self selectText:nil];
> NSString *theString = [self stringValue]; // debug shows (
> _NSCFString*) @"THERE"
> NSArray *toLookup = [NSArray arrayWithObjects:theString,nil]; // debug
> shows (_NSArray *) @"1 object"
> NSPasteboard *pasteboard = [NSPasteboard generalPasteboard]; // debug
> shows (NSPasteboard *) 0x10011a7b0
> NSInteger changeCount = [pasteboard clearContents]; // debug shows
> (NSInteger) 9
> BOOL OK = [pasteboard writeObjects:toLookup]; // debug shows (BOOL) YES
>
> // ********** This is my problem
> BOOL res = NSPerformService(@"Look Up In Dictionary", pasteboard); //
> debug shows (BOOL) NO
> }
> ...
> @end
>
> If I manually select the text in the field by double clicking it, the
> Services menu is populated and does contain
> "Look Up In Dictionary".
The slight bit of example code from Apple showing a use of NSPerformService()
uses +pasteboardWithUniqueName, not + generalPasteboard. You could try that.
https://developer.apple.com/library/mac/samplecode/PhotoSearch/Listings/MainWindowController_m.html
Also, you can try launching your app with "-NSDebugServices
com.apple.Dictionary" to see if that's informative.
That said, perhaps you're actually looking for the -[NSView
showDefinitionForAttributedString:…] methods.
Regards,
Ken
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