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DISP_FUNCTION

Defines an OLE automation function in a dispatch map.

DISP_FUNCTION(theClass, pszName, pfnMember, vtRetVal, vtsParams )

theClass

Name of the class.

pszName

External name of the function.

pfnMember

Name of the member function.

vtRetVal

A value specifying the function's return type.

vtsParams

A space-separated list of one or more constants specifying the function's parameter list.

The vtRetVal argument is of type VARTYPE. The following possible values for this argument are taken from the VARENUM enumeration:

Symbol

Return type

VT_EMPTY

void

VT_I2

short

VT_I4

long

VT_R4

float

VT_R8

double

VT_CY

CY

VT_DATE

DATE

VT_BSTR

BSTR

VT_DISPATCH

LPDISPATCH

VT_ERROR

SCODE

VT_BOOL

BOOL

VT_VARIANT

VARIANT

VT_UNKNOWN

LPUNKNOWN

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,


VTS_I2 VTS_PI2


specifies a list containing a short integer followed by a pointer to a short integer.

The VTS_ constants and their meanings are as follows:

Symbol

Parameter type

VTS_I2

Short

VTS_I4

Long

VTS_R4

Float

VTS_R8

Double

VTS_CY

const CY or CY*

VTS_DATE

DATE

VTS_BSTR

LPCSTR

VTS_DISPATCH

LPDISPATCH

VTS_SCODE

SCODE

VTS_BOOL

BOOL

VTS_VARIANT

const VARIANT* or VARIANT&

VTS_UNKNOWN

LPUNKNOWN

VTS_PI2

short*

VTS_PI4

long*

VTS_PR4

float*

VTS_PR8

double*

VTS_PCY

CY*

VTS_PDATE

DATE*

VTS_PBSTR

BSTR*

VTS_PDISPATCH

LPDISPATCH*

VTS_PSCODE

SCODE*

VTS_PBOOL

BOOL*

VTS_PVARIANT

VARIANT*

VTS_PUNKNOWN

LPUNKNOWN*

VTS_NONE

No parameters

Header: afxdisp.h

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