Package ch.bailu.gtk.gtk

Interface ComboBox.OnFormatEntryText

Enclosing class:

ComboBox

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface ComboBox.OnFormatEntryText

Method Summary

Modifier and Type	Method	Description
Str	onFormatEntryText(Str path)	Emitted to allow changing how the text in a combo box's entry is displayed.

Method Details

onFormatEntryText

Str onFormatEntryText(@Nonnull
 Str path)

Emitted to allow changing how the text in a combo box's entry is displayed.

See [property@Gtk.ComboBox:has-entry].

Connect a signal handler which returns an allocated string representing
@path. That string will then be used to set the text in the combo box's
entry. The default signal handler uses the text from the
[property@Gtk.ComboBox:entry-text-column] model column.

Here's an example signal handler which fetches data from the model and
displays it in the entry.
```c
static char *
format_entry_text_callback (GtkComboBox *combo,
const char *path,
gpointer user_data)
{
GtkTreeIter iter;
GtkTreeModel model;
double value;

model = gtk_combo_box_get_model (combo);

gtk_tree_model_get_iter_from_string (model, &iter, path);
gtk_tree_model_get (model, &iter,
THE_DOUBLE_VALUE_COLUMN, &value,
-1);

return g_strdup_printf ("%g", value);
}
```

Parameters:

path - the [struct@Gtk.TreePath] string from the combo box's current model to format text for

Returns:

a newly allocated string representing @path for the current `GtkComboBox` model.