7.3 IDEV Messages and Their Parameters
void addMaskActionProc(long maskRef, Ptr actionRef);
long maskRef; In - maskRef previously returned by IMakeMask
Ptr actionRef; In - reference to an action to be executed.
This message associates an action with a particular mask, telling the IDEV that the action pointed to by Ptr should be executed when the input state specified by maskRef occurs. MaskRef is a value returned previously by the IDEV in response to the IMakeMask message.
(see IPoll, and IDEV manager function DoIDEVMaskAction)
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