The DestDefaults enumeration specifies the various types of action that will be taken on behalf of the user for a drag destination site.

• DestDefaultMotion: If set for a widget, GTK+, during a drag over this widget will check if the drag matches this widget's list of possible targets and actions. GTK+ will then call dragStatus as appropriate. * DestDefaultHightlight: If set for a widget, GTK+ will draw a highlight on this widget as long as a drag is over this widget and the widget drag format and action are acceptable. * DestDefaultDrop: If set for a widget, when a drop occurs, GTK+ will will check if the drag matches this widget's list of possible targets and actions. If so, GTK+ will call dragGetData on behalf of the widget. Whether or not the drop is successful, GTK+ will call dragFinish. If the action was a move, then if the drag was successful, then True will be passed for the delete parameter to dragFinish * DestDefaultAll: If set, specifies that all default actions should be taken.

Packing parameters of a widget

• The Packing parameter determines how the child behaves in the horizontal or vertical way in an HBox or VBox, respectively. PackNatural means the child is as big as it reqests. It will stay at the start of the end of a Box if there is more space available. All children packed with PackRepel will be padded on both sides with additional space. PackGrow will increase the size of a widget so that it covers the available space. A menu bar, for instance, should always stay at the top of a window and should only occupy as little space as possible. Hence it should be packed at the start of a VBox with the packing option PackNatural. The working area of a window (e.g. the text area in an editor) should expand when the window is resized. Here the packing option PackGrow is the right choice and it is irrelevant whether the main area is inserted at the start or the end of a box. Finally PackRepel is most useful in a window where no widget can make use of excess space. Examples include a dialog box without list boxes or text fields.

Resize mode, for containers

• ResizeParent Pass resize request to the parent
• ResizeQueue Queue resizes on this widget
• ResizeImmediate Perform the resizes now

Mode in which selections can be performed

• There is a deprecated entry SelectionExtended which should have the same value as SelectionMultiple. C2HS chokes on that construct.

The TargetFlags enumeration is used to specify constraints on an entry in a TargetList. These flags are only used for drag and drop.

• If the TargetSameApp flag is set, the target will only be selected for drags within a single application.
• If the TargetSameWidget flag is set, the target will only be selected for drags within a single widget.