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Re: Multiple instantiations of variables & class
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Re: Multiple instantiations of variables & class


  • Subject: Re: Multiple instantiations of variables & class
  • From: Ondra Cada <email@hidden>
  • Date: Sun, 24 Mar 2002 13:39:16 +0100

On Sunday, March 24, 2002, at 07:36 , Chad Armstrong wrote:

Below is a description of my problem I'm having with mysterious difficulties with variables.
I put a printf statement in my - (id)initWithFrame:(NSRect)frame function in my EGView.h file (which is responsible for drawing to the custom NSView), and the printf function revealed that the function was being called 3 times! One time it seems to be called from the MainNib.nib in the Interface Builder since I added the EGView class, and another one is when I declare an instance of the class in my main controller class. However, there seems to be one more mysterious and hidden call to this function...any ideas? Or should I change -(id) initWithFrame to just an -(id)init function?

To get more precise answer you should show us the stacks (just use "bt" in gdb). Otherwise,

- as for the NIB call, it's normal: NIBbed CustomViews are created using initWithFrame:;
- as for the "when I declare an instance" it is for sure not true: you declare an instance in @interface when writing your code, and I bet at _that_ time nothing is called!

I guess instead you might mean the moment when you fill the property, like

myEGView=[EGView egViewWithSomething...];

? If so, it's again normal.

As for the third time, sorry, but with the information available I can't even guess.
---
Ondra Cada
OCSoftware: email@hidden http://www.ocs.cz
2K Development: email@hidden http://www.2kdevelopment.cz
private email@hidden http://www.ocs.cz/oc
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 >Multiple instantiations of variables & class (From: Chad Armstrong <email@hidden>)

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