Measurement Computing GPIB-488.2 - Manual (Page 40)

3-22 IOtech to Associated MCC APIs
986992 GPIB 488.2 Porting Guide
IOtech GPIB Commands Associated MCC GPIB 488.2 Command(s)
OnDigEvent
OnDigEventVDM
OnEvent
OnEventVDM
No Equivalent Commands
Syntax
OnDigEvent INT WINAPI OnDigEvent(DevHandleT devHandle, HWND
hwnd, OpaqueP lParam);
OnDigEventVDM INT WINAPI OnDigEventVDM(DevHandleT devHandle,
DigEventFuncT func, OpaqueP lParam);
OnEvent INT WINAPI OnEvent(DevHandleT devHandle,
HWND hWnd, OpaqueP lParam);
OnEventVDM INT WINAPI OnEventVDM(DevHandleT devHandle,
EventFuncT func);
Usage Notes
OnDigEvent and OnDigEventVDM are no longer to be used. They are digital commands
which applied only to AT488pnp and PCI488.
The OnDigEvent command was used to set the handle of a window to receive a notification
message when a digital match event was triggered.
The OnDigEventVDM command was used to set the address of a “C”-style function to be
called when a digital match event occurred. This function used a similar mechanism as the
OnEventVDM command.
In regard to the OnDigEvent
and OnDigEventVDM commands, there is no mechanism to
convert to, or to achieve equivalent or similar functionality.
The OnEvent command caused the event handling mechanism to issue a message upon
occurrence of an Armed event.
The OnEventVDM allowed a call back to a user-specified function in an application.
In regard to the OnEvent
and OnEventVDM commands, similar functionality can only be
achieved by coding efforts, of such magnitude, that they are beyond the scope of this document.