Used in DragContext to indicate what the destination should do with the dropped data.

• ActionDefault: Initialisation value, should not be used.
• ActionCopy: Copy the data.
• ActionMove: Move the data, i.e. first copy it, then delete it from the source.
• ActionLink: Add a link to the data. Note that this is only useful if source and destination agree on what it means.
• ActionPrivate: Special action which tells the source that the destination will do something that the source doesn't understand.
• ActionAsk: Ask the user what to do with the data.

Keyboard modifiers that are depressed when the user presses a key or a mouse button.

• This data type is used to build lists of modifers that were active during an event.
• The Apple key on Macintoshs is mapped to Alt2 and the Meta key (if available).
• Since Gtk 2.10, there are also Super, Hyper and Meta modifiers which are simply generated from Alt .. Compose modifier keys, depending on the mapping used by the windowing system. Due to one key being mapped to e.g. Alt2 and Meta, you shouldn't pattern match directly against a certain key but check whether a key is in the list using the elem function, say.

Information on from what level of the widget hierarchy the mouse cursor came.

NotifyAncestor

The window is entered from an ancestor or left towards an ancestor.

NotifyVirtual

The pointer moves between an ancestor and an inferior of the window.

NotifyInferior

The window is entered from an inferior or left towards an inferior.

NotifyNonlinear

The window is entered from or left towards a window which is neither an ancestor nor an inferior.

NotifyNonlinearVirtual

The pointer moves between two windows which are not ancestors of each other and the window is part of the ancestor chain between one of these windows and their least common ancestor.

NotifyUnknown

The level change does not fit into any of the other categories or could not be determined.

These are hints for the window manager that indicate what type of function the window has. The window manager can use this when determining decoration and behaviour of the window. The hint must be set before mapping the window.

See the extended window manager hints specification for more details about window types.

Returned by pointerGrab and keyboardGrab to indicate success or the reason for the failure of the grab attempt.

GrabSuccess

the resource was successfully grabbed.

GrabAlreadyGrabbed

the resource is actively grabbed by another client.

GrabInvalidTime

the resource was grabbed more recently than the specified time.

GrabNotViewable

the grab window or the confine_to window are not viewable.

GrabFrozen

the resource is frozen by an active grab of another client.

Specifies why a selection ownership was changed.

OwnerChangeNewOwner

some other application claimed the ownership

OwnerChangeDestroy

the window was destroyed

OwnerChangeClose

the client was closed