Jeffrey Barish wrote:
> Kristian Rietveld wrote:
>
> The problem with your first suggestion is that I have to hook every
> situation in which the tree view can be destroyed. The obvious one is when
> I change data sets. Exiting the program is another. There will be others
> when I implement more of the program. It certainly is possible to record
> the column widths at each of these points, but it sure is clumsy.
>
I do this exact thing in an application I'm developing now. But I only
do it in one place - a callback routine that is called for both the
delete and destroy events.
> The problem with the second suggestion is that writing a file is exactly
> what I need to do. The point of this exercise is to record in a file the
> width of each column as established by the user with the mouse so that the
> columns will have the same width the next time the program runs.
>
Again, I do the same - in my case, entries in an sqlite database. Some
routines are left out, but what I have included should give you the idea.
You don't hide/delete a window often at all (well - certainly not
"often" as far as the computer is concerned), and the time required
isn't noticeable - period.
Hope this helps?
First, setting the handlers:
SetSignalHandler(GTK_WIDGET(GetSWWindow()),"delete-event",
G_CALLBACK(HideSongWindow));
SetSignalHandler(GTK_WIDGET(GetSWWindow()), "destroy-event",
G_CALLBACK(HideSongWindow));
ANd then:
static void HideSongWindow(void)
{
SWSaveWindowPos();
SWSetVisible(FALSE);
}
void SWSaveWindowPos(void)
{
GList *cols;
int index = 0;
privateOpenDatabase();
avSaveWindowGeometry(GetSWWindow(),NULL, NULL);
/*
** save the order and size data for the different columns
*/
cols = gtk_tree_view_get_columns(GetSWTreeView());
g_list_foreach(cols, (GFunc) SWSaveColumnData, (gpointer) &index);
g_list_free(cols);
privateCloseDatabase();
}
static void SWSaveColumnData(GtkTreeViewColumn *column, int *index)
{
char name[32],
value[64];
int width;
if (*index)
{
g_object_get(G_OBJECT(column), "width", &width, NULL);
sprintf(name,"SongWindowListColumn%02d", *index);
sprintf(value,"%d %d %d %s",
gtk_tree_view_column_get_sort_column_id(column),
gtk_tree_view_column_get_visible(column),
width,
gtk_tree_view_column_get_title(column));
avStoreConfData(name, value);
}
(*index)++;
}
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