On Sep 23, 2008, at 02:58 , Arun wrote:
Hi All, I am a newbie to cocoa programming.I have written a small program in which i will be loading a Custom Aboutpanel from another nib. This launching of the panel works well only for the first time.If i close the panel and try to launch for the 2nd time, it is unable toshow the panel. Can anyone let me know what is wrong in the code? Attaching the code along with this mail. Thanks in advance..!!!
Hi Arun,The problem is that you're AboutPanel nib is wired-up a bit wrong. Since you're loading the instance yourself, you don't want to create the AboutPanelController object *inside* the nib. This is what the File's Owner object is for. To correct your issue keeping (mostly) the
same code as in your small example project, make these changes: In AbouPanel.nib: 1) Delete the instance of AboutPanelController2) Select File's Owner and open the inspector; under the Identity panel, change the Class to AboutPanelController
3) Wire your File's Owner mPanelToDisplay outlet to the panel in the nib4) (optional since you don't do any delegate methods at the moment) wire your panel's delegate outlet to File's Owner
5) Save (and optionally quit IB) In AboutPanelController.mm:1) In the method implementation for sharedInstance, change line 20 to the following line (change marked in bold):
if (YES == [NSBundle loadNibNamed:@"AbouPanel.nib" owner:sharedInstance];
2) save and rebuild -- this should now work as expectedIn this case, you want your sharedInstance variable to actually be the file's owner so that it can receive messages meant for the panel in the nib. You don't want the class itself to be the file's owner since you're actually creating an instance of the class here.
HTH, Jason
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