MateComponentSocket

## MateComponentSocket MateComponentSocket — Container for widgets from other processes. |

## Synopsis

    struct              MateComponentSocket;
                        MateComponentSocketClass;
    GtkWidget *           matecomponent_socket_new                 (void);

## Object Hierarchy

      GObject
       +----GInitiallyUnowned
             +----GtkObject
                   +----GtkWidget
                         +----GtkContainer
                               +----GtkSocket
                                     +----MateComponentSocket

## Implemented Interfaces

MateComponentSocket implements AtkImplementorIface and GtkBuildable.

## Description

This is an internal support routine of the X code in MateComponent.

Together with MateComponentPlug, MateComponentSocket provides the ability to embed widgets from one process into another process in a fashion that is transparent to the user. One process creates a MateComponentSocket widget and, passes the XID of that widget's window to the other process, which then creates a MateComponentPlug window with that XID. Any widgets contained in the MateComponentPlug then will appear inside the first applications window.

The XID of the socket's window is obtained by using the `GTK_WINDOW_XWINDOW()` macro from the header file <gdk/gdkx.h>. Before using this macro, the socket must have been realized, and for hence, have been added to its parent.

Example 9. Obtaining the XID of a socket

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    #include <gdk/gdkx.h>
    GtkWidget *socket = matecomponent_socket_new();
    gtk_widget_show (socket);
    gtk_container_add (GTK_CONTAINER (parent), socket);
    /* The following call is only necessary if one of
     * the ancestors of the socket is not yet visible.
     */
    gtk_widget_realize (socket);
    g_print ("The XID of the sockets window is %">x\n",
             GDK_WINDOW_XWINDOW (socket->window));

Note that if you pass the XID of the socket to another process that will create a plug in the socket, you must make sure that the socket widget is not destroyed until that plug is created. Violating this rule will cause unpredictable consequences, the most likely consequence being that the plug will appear as a separate toplevel window. You can check if the plug has been created by examining the `plug_window` field of the MateComponentSocket structure. If this field is non-NULL, then the plug has been succesfully created inside of the socket.

When GTK+ is notified that the embedded window has been destroyed, then it will destroy the socket as well. You should always, therefore, be prepared for your sockets to be destroyed at any time when the main event loop is running.

A socket can also be used to swallow arbitrary pre-existing top-level windows using `gtk_socket_steal()`, though the integration when this is done will not be as close as between a MateComponentPlug and a MateComponentSocket.

## Details

### struct MateComponentSocket

    struct MateComponentSocket;

The GtkEditable structure contains the following field. (This field should be considered read-only. It should never be set by an application.)

GdkWindow *plug_window; | the window embedded inside this GtkSocket.

### MateComponentSocketClass

    typedef struct {
    	GtkSocketClass parent_class;

    	gpointer dummy[4];
    } MateComponentSocketClass;

### matecomponent_socket_new ()

    GtkWidget *           matecomponent_socket_new                 (void);

Create a new empty MateComponentSocket.

Returns : | A new MateComponentSocket.

## See Also

MateComponentPlug | the widget that plugs into a MateComponentSocket.