138 lines
2.9 KiB
C++
138 lines
2.9 KiB
C++
/*++
|
|
|
|
Copyright (C) 1996-2001 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
UTILS.CPP
|
|
|
|
Abstract:
|
|
|
|
Purpose: Defines various utilities.
|
|
|
|
History:
|
|
|
|
a-davj 14-Aug-96 Created.
|
|
|
|
--*/
|
|
|
|
#include "precomp.h"
|
|
#include "genutils.h"
|
|
|
|
extern bool bServer;
|
|
|
|
|
|
//***************************************************************************
|
|
//
|
|
// LPWSTR A2WHelper
|
|
//
|
|
// DESCRIPTION:
|
|
//
|
|
// used by the A2W and W2A routines which serve to emulate the
|
|
// MFC character conversion macros.
|
|
//
|
|
// PARAMETERS:
|
|
//
|
|
// lpw pointer to wide character string
|
|
// lpa pointer to narrow string
|
|
// nChars max size of wide character array
|
|
//
|
|
// RETURN VALUE:
|
|
//
|
|
// poinnter to wide character array, or NULL if bogus arguments
|
|
//
|
|
//***************************************************************************
|
|
|
|
LPWSTR A2WHelper(
|
|
OUT LPWSTR lpw,
|
|
IN LPCSTR lpa,
|
|
IN int nChars)
|
|
{
|
|
if (lpa == NULL || lpw == NULL)
|
|
return NULL;
|
|
mbstowcs(lpw,lpa,nChars);
|
|
return lpw;
|
|
}
|
|
|
|
//***************************************************************************
|
|
//
|
|
// LPSTR W2AHelper
|
|
//
|
|
// DESCRIPTION:
|
|
//
|
|
// used by the A2W and W2A routines which serve to emulate the
|
|
// MFC character conversion macros.
|
|
//
|
|
// PARAMETERS:
|
|
//
|
|
// lpa mbs string
|
|
// lpw wide character string
|
|
// nChars max conversion size
|
|
//
|
|
// RETURN VALUE:
|
|
//
|
|
// pointer to narrow string, or NULL if bogus arguments.
|
|
//
|
|
//***************************************************************************
|
|
|
|
LPSTR W2AHelper(
|
|
IN LPSTR lpa,
|
|
IN LPCWSTR lpw,
|
|
IN int nChars)
|
|
{
|
|
if (lpw == NULL || lpa == NULL)
|
|
return NULL;
|
|
wcstombs(lpa,lpw,nChars);
|
|
return lpa;
|
|
}
|
|
|
|
|
|
//***************************************************************************
|
|
//
|
|
// BOOL bVerifyPointer
|
|
//
|
|
// DESCRIPTION:
|
|
//
|
|
// Simple utility for verifying that an ole object pointer is valid.
|
|
// THIS INCREASES THE OBJECT'S REFERENCE COUNT.
|
|
//
|
|
// PARAMETERS:
|
|
//
|
|
// pTest Object to test
|
|
//
|
|
// RETURN VALUE:
|
|
//
|
|
// TRUE if object is OK.
|
|
//***************************************************************************
|
|
|
|
BOOL bVerifyPointer(
|
|
IN PVOID pTest)
|
|
{
|
|
PVOID pTemp = NULL;
|
|
IUnknown * pIUnknown = (IUnknown *)pTest;
|
|
SCODE sc;
|
|
if(pTest == NULL)
|
|
return FALSE;
|
|
|
|
// Do a QI to verify that the object is OK and to bump the
|
|
// reference count if it is.
|
|
|
|
sc = pIUnknown->QueryInterface(IID_IUnknown, &pTemp);
|
|
if(sc != S_OK || pTemp == NULL)
|
|
{
|
|
delete pTest;
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
void MyCoUninitialize()
|
|
{
|
|
if(IsNT() && bServer)
|
|
CoUninitialize();
|
|
return;
|
|
}
|
|
|
|
|