Re: Problem with GtkCList, dynamically creating with N columns...

["Wrinkled Shirt" <wrinkledshirt hotmail com>]

Hey again,

The original problem again was dynamically creating an array of blank 
strings to be used as an argument in creating a gtkclist widget. The point 
was to create some code that could replace:

/**/
char *blankrow[] = {"", "", ""};  // needed for three columns
/**/

...with something else that would build dynamically, assuming I already knew 
the value of the number of columns needed.

Based on Flavio's response (thanks Flavio), I did the following...

/**/

int *blankrow;
int ctr;

blankrow = (int *)malloc(vpsql->cols);  // vpsql->cols = # of cols
for (ctr=0; ctr<vpsql->cols; ctr++)
{
 (char *)blankrow[ctr] = (char *)malloc(2);
 sprintf((char *)blankrow[ctr]," ");
}

vpsql->grid = gtk_clist_new_with_titles(vpsql->cols, (char **)blankrow);

/**/

There's a lot of extra casting that I threw in there because of compile 
warnings, but the effect is pretty much the same with or without them. The 
thing works (thank god), although there are a couple of things that trouble 
me.

1. If I substitute the declarations, mallocs and for loop with the 
hard-coded alternative above, I get no runtime error messages. However, with 
the new declarations, mallocs and for loop, I get the following error 
message repeated quite a lot. I cannot quite figure out why...

"Gtk-CRITICAL **: file gtkbindings.c: line 1072 (gtk_pattern_match): 
assertion `pspec->match_type < GTK_MATCH_LAST' failed."

There doesn't seem to be any corelation between the number of times this 
error message appears, and the number of modifications I've made to the 
widget (most notably, gtk_clist_set_text and gtk_clist_set_column_title). 
There's only one other occurence of this error message on the internet that 
I could find, and it had to do with some guy trying to use the following 
code:

/**/
label = gtk_label_new("Start search in:");
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 5);
gtk_widget_show(label);
/**/

That was all he gave, so I don't really know if the error is somewhere else. 
Anyhow, the program is currently working fine, displaying query results 
etc., so I'm tempted to let this drop until a later date. But if anyone 
knows off the top of their head what this is...?

2. My C skills are really rudimentary, so I have no idea how to free up the 
memory I've malloced up there. I've tried a few things, but each time I do 
it I get an error. Considering that I'm asking for a very limited amount of 
memory, it's tempting to just let it go, but I suppose that wouldn't be 
proper.

Thanks once again for all the responses. It was really helpful, and the 
widget is coming along nicely, if noisily.
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