Source code of Windows XP (NT5)
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/////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////
//
// File: propvar.h
//
// Purpose: Prototypes, constants, and macros relating to
// PropVariants in the Office code.
//
/////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////
#ifndef _PROPVAR_H_
#define _PROPVAR_H_
// ----------
// Prototypes
// ----------
BOOL FPropVarLoad (LPPROPVARIANT lppropvar, VARTYPE vt, LPVOID const lpv );
void VPropVarMove (LPPROPVARIANT lppropvarDest, LPPROPVARIANT const lppropvarSource);
BOOL FCoStrToWStr (LPWSTR * lplpwstr, const LPSTR lpstr, UINT uCodePage);
BOOL FCoWStrToStr (LPSTR * lplpstr, const LPWSTR lpwstr, UINT uCodePage);
BOOL FPropVarConvertString (LPPROPVARIANT lppropvarDest, const LPPROPVARIANT lppropvarSource, UINT uCodePage);
BOOL FPropVarCopyToBuf (LPPROPVARIANT const lppropvar, DWORD cbMax, LPVOID lpBuf);
// ---------
// Constants
// ---------
// Default size of PropVariant/PropSpec arrays.
#define DEFAULT_IPROPERTY_COUNT 10
// ------
// Macros
// ------
// Macro to see if a PropVariant is some kind of string.
#define IS_PROPVAR_STRING( lppropvar ) \
( ( (lppropvar)->vt & ~VT_VECTOR ) == VT_LPSTR \
|| \
( (lppropvar)->vt & ~VT_VECTOR ) == VT_LPWSTR ) \
// Macro to see if a VT is valid in the context
// of the User-Defined property set.
#define ISUDTYPE(vt) \
( vt == VT_LPSTR \
|| \
vt == VT_LPWSTR \
|| \
vt == VT_I4 \
|| \
vt == VT_R8 \
|| \
vt == VT_FILETIME \
|| \
vt == VT_BOOL )
// Macro to determine if a string is represented
// differently (in terms of the code-page)
// in memory than it is in the Property
// set. The codepage parameter is that of the
// property set.
#ifdef UNICODE
#define PROPVAR_STRING_CONVERSION_REQUIRED(lppropvar,codepage) \
( IS_PROPVAR_STRING( lppropvar ) \
&& \
((codepage) != CP_WINUNICODE) \
)
#else // UNICODE
#define PROPVAR_STRING_CONVERSION_REQUIRED(lppropvar,codepage) \
( IS_PROPVAR_STRING( lppropvar ) \
&& \
((codepage) == CP_WINUNICODE) \
)
#endif // UNICODE
#endif _PROPVAR_H_