call back problems

[Dennis Morgan <dennis morgan xtra co nz>]

Hi,
i am just wondering if there is a way to halt a call back till  another one has finished using a function?

At present,. i am using a treeview to display a list_store of the contents of a directory.

at present i am running into probs when its a large directory, and if i click on its parent, it doesnt just
display the contents of the parent or child directory but the  large directory also,. if it hasnt completely 
been read.

        if((dinfo = readdir(dfp)) == NULL) break;
        if ((strcmp(dinfo->d_name,".")!=0) && (strcmp(dinfo->d_name,"..")!=0))  {
                if (strcmp(ofile->directory,"/")!=0) {
                        snprintf(filn,1023,"%s/%s",ofile->directory,dinfo->d_name);
                } else {
                        snprintf(filn,1023,"%s%s",ofile->directory,dinfo->d_name);
                }
                .........
                gtk_list_store_append(ofile->list_store,&iter); 
                gtk_list_store_set(ofile->list_store, 
&iter,FILE_NAME,dinfo->d_name,PREMISSIONS,pro,FULL_PATH,filn,-1);         
                while (gtk_events_pending()) gtk_main_iteration(); 
        }

any ideas?

this is driving me nuts at the moment and its a bug i cant figure out...

regards
Dennis