RegisterHandleWriteCallback (open)
Registers an callback function that will be called when a handle is write signalled. Only supported in the following contexts: tollium, appserver and porthandler.
Syntax
LOADLIB "wh::ipc.whlib";
INTEGER FUNCTION RegisterHandleWriteCallback(INTEGER handle, FUNCTION PTR callback)
Parameters
INTEGER handle
Handle
FUNCTION PTR callback
Callback to call when the handle is write signalled arrives. Signature: MACRO callback()
Return value
INTEGER
Registration id, for use with UnregisterHandleCallback