NAME

DtWsmAddWorkspaceModifiedCallback — add a callback to be called when any workspace is changed

SYNOPSIS

#include &<Dt/Wsm.h>
DtWsmCBContext DtWsmAddWorkspaceModifiedCallback(
Widget widget,
DtWsmWsModifiedProc ws_change,
Pointer client_data);

DESCRIPTION

The DtWsmAddWorkspaceModifiedCallback function works with the XCDE workspace manager, dtwm(1), and registers a function to be called when a workspace is added, deleted or modified.

The widget argument is a realized widget.

The ws_change argument is the procedure to be called when a workspace is modified.

The client_data argument points to arbitrary client data to be passed back to ws_change.

The header defines the DtWsmWsModifiedProc callback prototype as follows:

typedef void (*DtWsmWsModifiedProc)(Widget widget,


        Atom aWorkspace,


        DtWsmWsReason reason,


        Pointer client_data);

The widget argument is the ID of the widget to be registered with the callback.

The aWorkspace argument is the name of the new current workspace (converted to an X atom).

The reason argument is a type of modification:

DtWSM_REASON_ADD

A new workspace was added.

DtWSM_REASON_BACKDROP

The backdrop for the workspace changed.

DtWSM_REASON_CURRENT

A different workspace was made the current workspace.

DtWSM_REASON_DELETE

A workspace was deleted.

DtWSM_REASON_TITLE

The workspace title changed.

The client_data argument points to the client data to be registered with the callback.

RETURN VALUE

Upon successful completion, the DtWsmAddWorkspaceModifiedCallback function returns a workspace callback registration context.

APPLICATION USAGE

The DtWsmAddWorkspaceModifiedCallback function returns a registration context that the application must save in order to remove this callback later.

DtWsmAddWorkspaceModifiedCallback requires a window; thus, a gadget is not acceptable for the widget argument.

The DtWsmRemoveWorkspaceCallback(3) function needs a registration context to remove the callback.

SEE ALSO

Dt/Wsm.h - DtWsm(5), dtwm(1), DtWsmGetWorkspaceInfo(3), DtWsmGetWorkspaceList(3), DtWsmRemoveWorkspaceCallback(3).