Returns the label used by the tool button, or null if the tool button doesn’t have a label. or uses a the label from a stock item. The returned string is owned by GTK+, and must not be modified or freed.
The label, or null
Returns the label used by the tool button, or null if the tool button doesn’t have a label. or uses a the label from a stock item. The returned string is owned by GTK+, and must not be modified or freed.