NSComboBox : how to set the width properly ?

[Stéphane Goujet]

Hello,

  I believe the recommended way to fix the dimensions of a NSComboBox 
is to find the widest element in the list and give its width to the 
NSComboBox. But there comes a problem : the NSComboBox interprets it as 
its total width, including the text field AND the button.
  It is the same if one uses the sizeToFit method. I find that totally 
illogical : NSComboBox calculates the width to fit on the text field, 
but then it does not use it to set its own text field width... instead 
it substracts from it the button width. So a sizeToFit never fits, the 
end of the text is hidden by the button...
  What is the work-around ?
  For example, how to know the width of the button ? Then I could add 
it  to the frame width and do a setFrame. I saw those values are 
hardcoded in NSComboBoxCell.m, so I could copy them, but isn't there a 
proper way to get them ?

Goodbye,
         Stéphane.