A VendorShell function that allows preactions and postactions to be executed when a protocol message is received from MWM
#include <Xm/Xm.h> #include <Xm/Protocols.h> void XmSetProtocolHooks Widget shellAtom propertyAtom protocolXtCallbackProc prehookXtPointer pre_closureXtCallbackProc posthookXtPointer post_closure
XmSetProtocolHooks is used by shells that want to have preactions and postactions executed when a protocol message is received from MWM. Since there is no guaranteed ordering in execution of event handlers or callback lists, this allows the shell to control the flow while leaving the protocol manager structures opaque.
XmSetWMProtocolHooks is a convenience interface. It calls XmSetProtocolHooks with the property value set to the atom returned by interning WM_PROTOCOLS.
For a complete definition of VendorShell and its associated resources, see VendorShell (3).
VendorShell (3), XmInternAtom (3), and XmSetWMProtocolHooks (3).