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Re: Widget question [message #16032 is a reply to message #1496]

Thu, 01 July 1999 00:00

gabriel rodriguez ibe is currently offline

gabriel rodriguez ibe
Messages: 10
Registered: July 1999

Junior Member

If I undestand OK you are manipulating your info via a pointer, so you don't
have to
store it back anywhere, because your are really changing the original info.

If it does not seem to work you are probably not using pointers correctly.
Check this

info={...., kk:oneValue , ....}
ptrInfo= PTR_NEW(info)

Now, if you try to do

info= *ptrInfo
info.kk= newValue

it will not change the original info structure, because I'm working with a
copy of it (I should
have written " newInfo= *ptrInfo)

The correct way to do it is

(*ptrInfo).kk= newValue

Now I have modified the original info structure, I don't have to store it
anywhere.

Gabriel

Harald Frey escribiï¿½:

> Sorry if I missed that point somewhere in the very interesting
> discussion about "Passing info and destroying widgets". I followed the
> suggestion by Liam Gumley to create my widget structure but now I have a
> problem.
>
> I have 3 levels in my widget structure, main, parent and child. What I
> do is:
>
> - Create main widget
> - Create info structure
> - store info structure in the main level base
> - start Xmanager with event handler
>
> A certain button on the main widget calls the parent process where I
> - get the info structure
> - create the parent widget
> - create a pointer to the info structure
> - store pointer in parent base
> - start second Xmanager with second event handler
>
> Now a button on the parent widget calls a process on the child level
> where I
> - get the pointer
> - get the info structure via pointer
> - manipulate the info
>
> So far everything is fine but now I want to store the manipulated info
> from the child level back into the main widget and destroy the parent
> widget. How do I do this?
>
> Harald
> hfrey@ssl.berkeley.edu

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[Message index]

		Widget Question By: scollick on Thu, 16 September 1993 17:09
		Re: WIDGET QUESTION By: stl on Tue, 28 June 1994 01:05
		Re: WIDGET QUESTION By: crdmi on Mon, 27 June 1994 09:38
		Re: WIDGET QUESTION By: fskmjm on Mon, 27 June 1994 08:58
		Re: postscript By: dan on Tue, 20 September 1994 11:11
		Re: WIDGET QUESTION By: crdmi on Thu, 23 June 1994 11:35
		Re: Widget question By: Liam Gumley on Mon, 30 June 1997 00:00
		Re: Widget question By: gabriel rodriguez ibe on Thu, 01 July 1999 00:00
		Re: Widget question By: davidf on Fri, 02 July 1999 00:00
		Re: Widget question By: Liam Gumley on Fri, 02 July 1999 00:00
		Re: Widget Question By: Brian Wolven on Thu, 09 June 2011 13:53
		Re: Widget Question By: David Fanning on Thu, 09 June 2011 13:41

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