gtk/gtk.go
func (v *ToolButton) SetIconName(iconName string) {
	cstr := C.CString(iconName)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_tool_button_set_icon_name(v.native(), (*C.gchar)(cstr))
}
func (v *ToolButton) SetIconName(iconName string) {
	cstr := C.CString(iconName)
	defer C.free(unsafe.Pointer(cstr))
	C.gtk_tool_button_set_icon_name(v.native(), (*C.gchar)(cstr))
}
// SetIconName is a wrapper around gtk_tool_button_set_icon_name().