I have a view based NSTableView using an NSArrayController with
NSDictionary items as rows. I would like to display a tooltip for each
row as the "Description" key from my dictionaries. I have tried using
the table delegate method:
- (NSString *)tableView:(NSTableView *)aTableView
toolTipForCell:(NSCell *)aCell rect:(NSRectPointer)rect
tableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)row
mouseLocation:(NSPoint)mouseLocation
But it is never called. Perhaps it is only for cell-based tables, but
not documented as such?
So instead I tried to bind the tooltip of the NSTableView to the array
controller with key arrangedObjects and model path Description, but
that results in this error:
2012-02-01 09:22:19.512 MyApp[8860:707] -[__NSArrayI length]:
unrecognized selector sent to instance 0x1023102c0
2012-02-01 09:22:19.514 MyApp[8860:707] (
0 CoreFoundation 0x00007fff8e144286
__exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff93719d5e
objc_exception_throw + 43
2 CoreFoundation 0x00007fff8e1d04ce -[NSObject
doesNotRecognizeSelector:] + 190
3 CoreFoundation 0x00007fff8e131133
___forwarding___ + 371
4 CoreFoundation 0x00007fff8e130f48
_CF_forwarding_prep_0 + 232
5 AppKit 0x00007fff9211d233
-[NSToolTipManager displayToolTip:] + 353
If I try to bind the tooltip of the "Table Cell View" it is not
displayed. I've also tried just binding the tooltip of an NSTextView
in the row view, and still have had no luck.
What is the correct way to show a tooltip for a row in a view based NSTableView?
Thank you,
Andrew
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