On Mon, 2003-10-20 at 08:49, Boszormenyi Zoltan wrote:
> Hi,
>
> is it possible to append a row to a TreeModel while having
> an iterator going through the same model?
Probably a hack but... if you append the row to a treepath greater than
that of the iterator, no problem. But if you append it to a path less
than that represented by the iterator, the iterator will be knocked off
track. That's just what I've observed.
Edscott
>
> I have a code snippet that does just the same,
> the second time the code runs
> the second gtk_tree_model_get_iter_first() seems to succeed
> but gives an invalid iterator, as I get invalid values.
>
> I use an uptodate fedora core, gtk2-2.2.4-5.1.
>
> This is the code:
>
> void utolso_sztorno(void) {
> GtkTreeIter iter, iter1;
> int sorsz, sorsz1, lancfej, lancresz, gyujto, afa,
> prev, next;
> gchar *tranz, *vk, *nev, *afajel, *egys;
> double szorzo, ar, osszeg;
>
> if (gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ptgdb_internal->tetelek), &iter)) {
> do {
> gtk_tree_model_get (GTK_TREE_MODEL(ptgdb_internal->tetelek), &iter,
> TETEL_SORSZ, &sorsz, TETEL_PREV, &lancresz, -1);
> if (!lancresz)
> lancfej = sorsz;
> } while (gtk_tree_model_iter_next (GTK_TREE_MODEL(ptgdb_internal->tetelek), &iter));
> #if 0 /* makes no difference */
> memset(&iter, 0, sizeof(iter));
> #endif
> if (gtk_tree_model_get_iter_first(GTK_TREE_MODEL(ptgdb_internal->tetelek), &iter))
> do {
> gtk_tree_model_get (GTK_TREE_MODEL(ptgdb_internal->tetelek), &iter,
> TETEL_SORSZ, &sorsz1, TETEL_TRANZAK, &tranz,
> TETEL_VKOD, &vk, TETEL_NEV, &nev,
> TETEL_GYUJTO, &gyujto, TETEL_AFA, &afa,
> TETEL_AFAJEL, &afajel, TETEL_SZORZO, &szorzo,
> TETEL_EGYSEG, &egys, TETEL_AR, &ar,
> TETEL_OSSZEG, &osszeg, TETEL_PREV, &prev,
> TETEL_NEXT, &next, -1);
> /* here I get invalid numbers on the second run, seems to be un-initialized */
> printf("sorsz: %d\n", sorsz1);
> if (sorsz1 > sorsz)
> break;
> if ((sorsz1 >= lancfej) && (sorsz1 <= sorsz)) {
> gtk_list_store_set (ptgdb_internal->tetelek,
> &iter1, TETEL_SZTORNO, TRUE,
> osszeg, -1);
> gtk_list_store_append (ptgdb_internal->tetelek, &iter1);
> gtk_list_store_set(ptgdb_internal->tetelek, &iter1,
> TETEL_SORSZ, sorsz1 + sorsz - lancfej + 1,
> TETEL_TRANZAK, tranz,
> TETEL_VKOD, vk, TETEL_NEV, nev,
> TETEL_SZTORNO, TRUE, TETEL_IGAZITAS, 1.0,
> TETEL_GYUJTO, gyujto,
> TETEL_AFA, afa, TETEL_AFAJEL, afajel,
> TETEL_SZORZO, -szorzo,
> TETEL_EGYSEG, egys,
> TETEL_AR, ar, TETEL_OSSZEG, -osszeg,
> TETEL_PREV, prev, TETEL_NEXT, next,
> -1);
> }
> } while (gtk_tree_model_iter_next (GTK_TREE_MODEL(ptgdb_internal->tetelek), &iter1));
> } else
> gdk_beep();
> }
>
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