On Tue, May 30, 2006 at 10:43:33AM +0200, Daniel Haude wrote:
> say I have a table filled with some widgets. Now I'd like to replace one
> of these widgets (A) with some other widget B. I guess I just go ahead and
> destroy widget A, and then attach widget B. My problem is that in order to
> do that, I need to know the position (row and column) that A had within
> the table.
>
> To put the question simpler: Given a table and a widget within the table
> (or box), how can I find the position of the widget within the table (or
> box)?
To remember where you put it is usually the best solution.
You can also use something like the attached function (for
tables). Note however, it accesses the private `children'
field of GtkTable. In the case of boxes the field is public
(read-only), but you have to deal with start-packing and
end-packing.
Yeti
--
Anonyms eat their boogers.
=======================================================================
/**
* gwy_table_get_child_widget:
* @table: A #GtkTable.
* @row: Row in @table.
* @col: Column in @table.
*
* Finds a widget in #GtkTable by its coordinates.
*
* Coordinates (@col, @row) are taken as coordinates of widget top left corner.
* More precisely, the returned widget either contains the specified grid
* point or it is attached by its left side, top side, or top left corner to
* this point.
*
* If there are multiple matches due to overlapping widgets, a random
* match is returned.
*
* Returns: The widget at (@col, @row) or %NULL if there is no such widget.
**/
GtkWidget*
gwy_table_get_child_widget(GtkWidget *table,
gint row,
gint col)
{
GList *l;
g_return_val_if_fail(GTK_IS_TABLE(table), NULL);
for (l = GTK_TABLE(table)->children; l; l = g_list_next(l)) {
GtkTableChild *child = (GtkTableChild*)l->data;
if (child->left_attach <= col && child->right_attach > col
&& child->top_attach <= row && child->bottom_attach > row)
return child->widget;
}
return NULL;
}
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