DISP_FUNCTION

Статья
10/16/2008

Defines an OLE automation function in a dispatch map.

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

Параметры

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.

Заметки

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