Re: widget array

[adlaib <adlaib lucent com>]

oh yeah.

just cast the array
ie:
---------------------------------------------------------------------------------------
int	i;
gpointer widgetPtr;
gpointer tempWidgetPtr;

widgetPtr = (gpointer)malloc(sizeof(widgetPtr)*NUM_WIDGETS);

//use tempWidgetPtr to traverse the array,
tempWidgetPtr = widgetPtr;

// i guess u can write a macro for the typecast
for (i=0; i<NUM_WIDGETS; i++) {
	*((GtkWidget **)tempWidgetPtr) = gtk_CREATE_SOME_KIND_OF_WIDGET();
	DO_SOME_WIDGET_PROCESSING(*((GtkWidget **)tempWidgetPtr));
	tempWidgetPtr=+ sizeof(tempWidgetPtr);
}

//u don't need a cast here cause widgetPtr is already a gpointer.
gtk_signal_connect(GTK_OBJECT(THE_WIDGET_THAT_GENERATES_THE_SINGAL),
"THE_SIGNAL", 
			GTK_SIGNAL_FUNC(THE_SIGNAL_HANDLER), widgetPtr);
---------------------------------------------------------------------------------------


THE_SIGNAL_HANDLER() - should destroy all NUM_WIDGETS (depending on what u r
doing) and
free widgetPtr - if nobody else needs it or else youre gonna have some nasty
memory leaks.

what i do is define a stucture of several ptrs, malloc the stuct - and pass the
structPtr to the signal handler - that way i can do many arrays of widgets at
the
same time.


widgetArray[NUM_WIDGETS] willl NOT work... (unless u declare it static - yuck)

hope that helps...



ksteen@earthlink.net wrote:
> 
>     Is it possible to set up an array of  gtk widgets and pass the array
> to a function with gtk_signal_connect()?    I have a window that
> collects information from the user.  I would like to pass all the
> widgets in an array to another function that reads and manipulates the
> information.  Currently, I am  using gtk_object_set_data ()  and then
> looking up each widget in the called function.  That works fine but
> seems like sloppy code.  I think that my problem is that a gpointer is a
> void pointer and I am not casting the pointer correctly to acces the
> array.  Any help  will be greatly appreciated.
> 
> Thanks,
> Ken
> 
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