allows X applications that do not support X11R6 session management to participate
in an X11R6 session.
In order for smproxy to act as a proxy for an X application, one of the
following must be true:
- The application maps a top level window containing the WM_CLIENT_LEADER
property. This property provides a pointer to the client leader window
which contains the WM_CLASS, WM_NAME, WM_COMMAND, and WM_CLIENT_MACHINE
- The application maps a top level window which does not contain the WM_CLIENT_LEADER property. However, this top level window contains the WM_CLASS, WM_NAME, WM_COMMAND, and WM_CLIENT_MACHINE properties.
An application that support the WM_SAVE_YOURSELF protocol will receive a WM_SAVE_YOURSELF client message each time the session manager issues a checkpoint or shutdown. This allows the application to save state. If an application does not support the WM_SAVE_YOURSELF protocol, then the proxy will provide enough information to the session manager to restart the application (using WM_COMMAND), but no state will be restored.
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