XmCreatePulldownMenu creates an instance of a RowColumn widget of type XmMENU_PULLDOWN and returns the associated widget ID.
- Specifies the parent widget ID
- Specifies the name of the created widget
- Specifies the argument list
- Specifies the number of attribute/value pairs in the argument list (arglist)
Specifies the number of attribute/value pairs in the argument list (arglist). When this function is used to create the Pulldown menu pane, a MenuShell widget is automatically created as the parent of the menu pane. If the widget specified by the parent parameter is a Popup or a Pulldown menu pane, the MenuShell widget is created as a child of the parent MenuShell; otherwise, it is created as a child of the specified parent widget.
XmCreatePulldownMenu is provided as a convenience function for creating RowColumn widgets configured to operate as Pulldown menu panes and is not implemented as a separate widget class.
A Pulldown menu pane displays a 3-D shadow, unless the feature is disabled by the application. The shadow appears around the edge of the menu pane.
A Pulldown menu pane is used with submenus that are to be attached to a CascadeButton or a CascadeButtonGadget. This is the case for all menu panes that are part of a PulldownMenu system (a MenuBar), the menu pane associated with an OptionMenu, and any menu panes that cascade from a Popup menu pane. Pulldown menu panes that are to be associated with an OptionMenu must be created before the OptionMenu is created.
The Pulldown menu pane must be attached to a CascadeButton or CascadeButtonGadget that resides in a MenuBar, a Popup menu pane, a Pulldown menu pane, or an OptionMenu. It is attached with the button resource XmNsubMenuId.
A MenuShell widget is required between the Pulldown menu pane and its parent. If the application uses this convenience function for creating a Pulldown menu pane, the MenuShell is automatically created as the real parent of the menu pane; otherwise, it is the application's responsibility to create the MenuShell widget.
To function correctly when incorporated into a menu, the Pulldown menu pane's hierarchy must be considered. This hierarchy depends on the type of menu system that is being built, as follows:
- If the Pulldown menu pane is to be pulled down from a MenuBar, its parent must be the MenuBar.
- If the Pulldown menu pane is to be pulled down from a Popup or another Pulldown menu pane, its parent must be that Popup or Pulldown menu pane.
- If the Pulldown menu pane is to be pulled down from an OptionMenu, its parent must be the same as the OptionMenu parent.
PullDown menu panes support tear-off capabilities for tear-off menus through XmRowColumn resources. For a complete definition of RowColumn and its associated resources, see XmRowColumn(3).
Returns the RowColumn widget ID.