ToolButton.setLabel

void setLabel(string label = null)

Sets label as the label used for the tool button. The #GtkToolButton:label property only has an effect if not overridden by a non-null #GtkToolButton:label-widget property. If both the #GtkToolButton:label-widget and #GtkToolButton:label properties are null, the label is determined by the #GtkToolButton:stock-id property. If the #GtkToolButton:stock-id property is also null, button will not have a label.

Parameters

label a string that will be used as label, or null.