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Editing NSBrowserCells

Hi, I'm trying to set up an editable NSBrowser and have just run up against a brick wall. I'm implementing NSCell's - (void) editWithFrame:(NSRect)aRect
inView:(NSView *)controlView editor:(NSText *)textObj
delegate:(id)anObject event:(NSEvent *)theEvent method to set up the editing. I've decided to initially set the editing to work on a double click. The problem is that although the cell text is made available for editing it appears white against a white background. I've tried to set the colour of the text with setUpFieldEditorAttributes:(NSText *)textObj but this doesn's seem to work. What does seem to work is to reload the column of the browser containing the cell by adding a new cell to the browser or by reloading the column in the textDidBeginEditing delegate method. I've included the code I've got so far below.

- (void)handleDoubleClicks:(id)sender
{
NSBrowserCell *selectedCell;
NSRect cellFrame;
NSMatrix *theMatrix;
int selectedRow, selectedColumn;
NSText *fieldEditor;

selectedCell = [browser selectedCell];
selectedColumn = [browser selectedColumn];
selectedRow = [browser selectedRowInColumn:selectedColumn];
theMatrix = [browser matrixInColumn:selectedColumn];

cellFrame = [theMatrix cellFrameAtRow:selectedRow column:0];

fieldEditor = [[browser window] fieldEditor:YES forObject:selectedCell];

[selectedCell setEditable:YES];
[selectedCell setSendsActionOnEndEditing:YES];
[selectedCell setUpFieldEditorAttributes:fieldEditor];
[selectedCell editWithFrame:cellFrame inView:theMatrix editor:fieldEditor delegate:self event:nil]
}

Any help would be much appreciated!
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