Re: Determining which button was clicked using it's id attribute

[Nicola Pero]

I think Csanyi is using Renaissance, where each tag has an 'id'.

To figure out which button has been clicked, as Fred said, it's best  
to use a 'tag':

 <button tag="3" ...>

and then [sender tag] should work.  Csanyi, check the renaissance/ 
Examples/Applications/Calculator
for a full example.

Thanks

On 20 Nov 2010, at 12:04, Fred Kiefer wrote:

> Hi Pal,
>
> just like your compiler I have no idea what you mean by the "id" of  
> the
> button :-)
>
> A button, like many other GUI elements in OpenStep, may have a tag
> assigned to it. This can be done in Gorm (or InterfaceBuilder if you  
> are
> working on MaOSX) or in code. The tag is an integer value and if you  
> are
> careful to use an unique value per button, this can be easily used  
> in a
> switch statement.
>
> Hope this helps
> Fred
>
>
> Am 19.11.2010 20:40, schrieb Csanyi Pal:
> > Jason Lincoln <jlincoln@yahoo.com> writes:
> >
> > > In your case, could you get the button's title to determine which  
> > > one
> > > sent the action message?
> >
> > I can, but the button titles is not good for me because I have on my
> > application's GUI 8 buttons (toggle type all) and these buttons all  
> > has
> > title '1' and alternate title '0', but it's 'id' attributes are
> > different.
> >
> > See my code bellow:
> >
> > [code]
> > - (void) DPbitSetReset: (id)sender
> > {
> >
> >  NSSound *DPbitReset = [NSSound soundNamed: @"DPbitReset.wav"];
> >  NSSound *DPbitSet = [NSSound soundNamed: @"DPbitSet.wav"];
> >  NSString *ButtonId = [sender id];
> >
> >  // Whether the button state is 1 or 0?
> >  if ([sender state] == 1)
> >     {
> >       // Play the bit set sound
> >       [DPbitSet play];
> >
> >       // Which bit on Data Port?
> >       if ([ButtonId isEqualToString: @"DPb0sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 1 to the data port bit  
> > 0"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb1sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 1 to the data port bit  
> > 1"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb2sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 1 to the data port bit  
> > 2"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb3sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 1 to the data port bit  
> > 3"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb4sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 1 to the data port bit  
> > 4"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb5sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 1 to the data port bit  
> > 5"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb6sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 1 to the data port bit  
> > 6"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb7sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 1 to the data port bit  
> > 7"];
> >       }
> >     }
> >
> >  else if ([sender state] == 0)
> >     {
> >        // Play the bit reset sound
> >       [DPbitReset play];
> >
> >       // Which bit on Data Port?
> >       if ([ButtonId isEqualToString: @"DPb0sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 0 to the data port bit  
> > 0"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb1sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 0 to the data port bit  
> > 1"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb2sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 0 to the data port bit  
> > 2"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb3sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 0 to the data port bit  
> > 3"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb4sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 0 to the data port bit  
> > 4"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb5sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 0 to the data port bit  
> > 5"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb6sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 0 to the data port bit  
> > 6"];
> >       }
> >       if ([ButtonId isEqualToString: @"DPb7sr"]);
> >       {
> > 	 [StatLine setStringValue: @"write logical 0 to the data port bit  
> > 7"];
> >       }
> >     }
> > }
> > [/code]
> >
> > If I compile the application with 'make' I get error messages:
> > This is gnustep-make 2.4.0. Type 'make print-gnustep-make-help' for  
> > help.
> > Making all for app LPT_Interface...
> > Compiling file MainController.m ...
> > MainController.m:120: error: expected ‘{’ before ‘-’ token
> > MainController.m: In function ‘-[MainController DPbitSetReset:]’:
> > MainController.m:125: warning: no ‘-id’ method found
> > MainController.m:125: warning: (Messages without a matching method  
> > signature
> > MainController.m:125: warning: will be assumed to return ‘id’ and  
> > accept
> > MainController.m:125: warning: ‘...’ as arguments.)
> > MainController.m:171: error: ‘DPbitReset’ undeclared (first use in  
> > this function)
> > MainController.m:171: error: (Each undeclared identifier is  
> > reported only once
> > MainController.m:171: error: for each function it appears in.)
> > make[3]: *** [obj/LPT_Interface.obj/MainController.m.o] Error 1
> > make[2]: *** [internal-app-run-compile-submake] Error 2
> > make[1]: *** [LPT_Interface.all.app.variables] Error 2
> > make: *** [internal-all] Error 2
> >
> > So one can't to use button 'id' attribute to determine which one sent
> > the action message?
> >
> > Any advices will be appreciated!
>
>
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