To handle Drag-n-Drop have done following,
-(void)InitMyOutlineView{
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- - - - - - - - - - - - - -- -- - - - - - - - -
[pMyOutlineView registerForDraggedTypes:
[NSArray arrayWithObject:NSStringPboardType]];
/* I tried both Yes and No */
[pMyOutlineView setDraggingSourceOperationMask:NSDragOperationEvery forLocal:NO];
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- -- -- - - - - -- - - - - - - - - - - - -- - - -
}
The WriteItem method as below,
- (BOOL)outlineView:(NSOutlineView *)outlineView writeItems:(NSArray *)items toPasteboard:(NSPasteboard *)pboard{
[self log:@"write Items"];
NSString *pStr = [NSString stringWithFormat:@"this is the temp string "];
[pboard declareTypes:[NSArray arrayWithObject:NSStringPboardType] owner:self];
[pboard setString:pStr forType:NSStringPboardType];
[self log:@"returning YES"];
return YES;
}
Now i am expecting control will come to AcceptDrop method, but break point didn't hit there, and in the Log/gdb getting following log
2011-02-04 16:21:25.435 MyApp[2006:a0f] write Items
2011-02-04 16:21:25.437 MyApp[2006:a0f] returning YES
2011-02-04 16:21:25.439 MyApp[2006:a0f] *** -[NSCFArray initWithObjects:count:]: attempt to insert nil object at objects[0]
and control didn't come to acceptDrop method,
When i enable "Stop on Exception" following is the call stack when it stopped,
#0 0x981b94e6 in objc_exception_throw
#1 0x96ed34cf in -[__NSPlaceholderArray initWithObjects:count:]
#2 0x96efaaa3 in +[NSArray arrayWithObject:]
#3 0x92316dfd in -[NSOutlineView _columnsForDragImage]
#4 0x923f1e32 in -[NSTableView _doImageDragUsingRowsWithIndexes:event:pasteboard:source:slideBack:startRow:]
#5 0x91fea16a in -[NSTableView _performDragFromMouseDown:]
#6 0x91fe89b9 in -[NSTableView mouseDown:]
#7 0x91fe864e in -[NSOutlineView mouseDown:]
#8 0x91f86c68 in -[NSWindow sendEvent:]
#9 0x91e9f817 in -[NSApplication sendEvent:]
#10 0x91e332a7 in -[NSApplication run]
#11 0x91e2b2d9 in NSApplicationMain
Let me update one more thing, in my outline view, i have custom cell, which is nothing but Mac ImageTextCell interface file i am using.
Can anyone please guide me, what i am doing wrong
Kind Regards Rohan
[myoutlineView setOutlineColoumn : firstColumn] was missing, when i added then its tarted working