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Re: NSComboBoxDataSource problems
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Re: NSComboBoxDataSource problems


  • Subject: Re: NSComboBoxDataSource problems
  • From: Fritz Anderson <email@hidden>
  • Date: Tue, 26 Aug 2008 12:45:35 -0500

On 26 Aug 2008, at 11:12 AM, Allen Curtis wrote:

I am writing my first Cocoa application and I am trying to dynamically fill a ComboBox. In order to do this I implemented the required methods in my <NDA> implementation as follows:

- (NSInteger)numberOfItemsInComboBox:(NSComboBox *)aComboBox
...

- (id)comboBox:(NSComboBox *)aComboBox objectValueForItemAtIndex: (NSInteger)index
...
When I run the program the console displays the message:
2008-08-26 08:59:46.417 CSAFEApp[14163:10b] *** Illegal NSComboBoxCell data source (<MyController: 0x134360>). Must implement numberOfItemsInComboBoxCell: and comboBoxCell:objectValueForItemAtIndex:

The selectors shown in the error log do not match the selectors of the methods in your message. The required methods have "Cell" in them. Your method names do not.


You seem to have connected the data-source outlet to the _cell_ of your combo box, rather than to the combo box itself. The methods in your message are for NSComboBox. In Interface Builder, select the NSComboBoxCell (the outline view may help you), and disconnect the dataSource outlet. Then select the NSComboBox and connect its dataSource outlet to your delegate.

	— F

 --
Fritz Anderson -- Xcode 3 Unleashed: Now Available -- http://x3u.manoverboard.org/

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  • Follow-Ups:
    • Re: NSComboBoxDataSource problems
      • From: "Allen Curtis" <email@hidden>
References: 
 >NSComboBoxDataSource problems (From: "Allen Curtis" <email@hidden>)

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