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The ON_EVENT_REFLECT macro, when used in the event sink map of an OLE control's wrapper class, receives events fired by the control before they are handled by the control's container.

ON_EVENT_REFLECT(theClass, dispid, pfnHandler, vtsParams )


The class to which this event sink map belongs.


The dispatch ID of the event fired by the control.


Pointer to a member function that handles the event. This function should have a BOOL return type and parameter types that match the event's parameters (see vtsParams). The function should return TRUE to indicate the event was handled; otherwise FALSE.


A sequence of VTS_ constants that specifies the types of the parameters for the event. These are the same constants that are used in dispatch map entries such as DISP_FUNCTION.

The vtsParams argument is a space-separated list of values from the VTS_ constants.

One or more of these values separated by spaces (not commas) specifies the function's parameter list. For example:


specifies a list containing a short integer followed by a BOOL.

For a list of the VTS_ constants, see EVENT_CUSTOM.

Header: afxdisp.h