DEMOGL_MessageHandlerDisable disables message handling for the given registered effect object. Use this function to
disable message handlers enabled using DEMOGL_MessageHandlerEnable.
Pointer to a zero-terminated string which contains the name of the registered effect which message handler should be disabled.
Return values.
Remarks.
When you want to process the windows messages received by the main window, and thus by DemoGL, inside an effect object, enable
that effects message handler, by calling
DEMOGL_MessageHandlerEnable.
DemoGL will then pass on every message received by
its message handler to the effect object, by calling the effect objects method MessageHandler and passing all the data
related to the message to the method. You can disable the message handler of an effect object by calling
DEMOGL_MessageHandlerDisable. Message handlers for all registered effect objects are disabled by default.