Sets the tooltip markup text to be used as tooltip for the arrow button which pops up the menu. See gtk.tool_item.ToolItem.setTooltipText for setting a tooltip on the whole #GtkMenuToolButton.
markup text to be used as tooltip text for button’s arrow button
Sets the tooltip markup text to be used as tooltip for the arrow button which pops up the menu. See gtk.tool_item.ToolItem.setTooltipText for setting a tooltip on the whole #GtkMenuToolButton.