Wiley-World.of.Warcraft.Programming.A.Guide.and.Reference.for.Creating.WoW.Addons

Chapter 23 ■ Creating Dropdown Menus 435basic positioning information. The function takes eight possible arguments,but only the first six are typically used:level (number)—The initial level to display. This number is passeddirectly to the initialization function.value—A value used to set the global variable UIDROPDOWNMENU_MENU_VALUE, which is used primarily in multilevel menus. This is discussed indetail later in this chapter.dropDownFrame—The actual dropdown frame to display.anchorName (string)—The name of the frame to which the dropdownshould be anchored. This can also be the string cursor, in which case thedropdown is anchored to the cursor position at the moment this functionis called.xOffset (number)—A horizontal offset in units for the dropdown menu.yOffset (number)—A vertical offset in units for the dropdown menu.Add the following function to DropDownTest.lua to call ToggleDropDownMenu() when the test button is clicked:function DropDownTest_ButtonOnClick(self, button, down)local name = self:GetName()ToggleDropDownMenu(1, nil, DropDownTest_DropDown, name, 0, 0)endBecause this example displays only one level of the menu, the functionpasses 1 as the level and doesn’t include a menu value. The dropdown will beanchored to the button itself, with no offset from the default location.Testing the DropdownLog in to World of Warcraft with the DropDownTest addon enabled; a gamebutton should display in the center of your screen. Click the button and youshould see the dropdown menu shown in Figure 23-3.Figure 23-3: Dropdown menu created by the DropDownTest addon