Re: (Easy?) Newbie enquiry re: pointers

["Samuel Cormier-Iijima" <sciyoshi gmail com>]

Whenever you set the text, the widgets will keep copies of the text
for themselves. (they duplicated the string so it's not showing the
actual contents of *your* string). To update it, you'll have to set
the text again for the widgets. :-(

Samuel

On 10/10/06, kakuta safe-mail net <kakuta safe-mail net> wrote:
> I am currently attempting to write my first GTK program, which is
>  a graphical mp3 jukebox frontend to the mpg123 linux command.
> I wish to have each button on a grid correspond to a different mp3 track. To do this I pass a pointer to a 
> string (the name of the mp3 file) to the respective button callback functions.  This all works
>  well -  the problem is that I have also built a 'reload button'
> which refreshes all the strings so that the same button then plays a
>  different track to before the reload.
>
> The problem is that
>  even though the strings the pointers point to do seem to change
>  (I write them out on leaving gtk_main) the buttons still seem to point to
> the orignal strings, even though they have been overwirtten.
> Thus the button seems locked on to the original mp3 filename
>  even if I overwrite this string.
>
> I guess this problem is perhaps easily overcome? (I can supply whatever details you may require including the 
> code itself).
>
> Many thanks,
>               Dan.
> p.s. I am new to GUI programming so please keep the advice at 'idiot level'!
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