85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
|
//+----------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// File: nativecm.cpp
|
||
|
|
//
|
||
|
|
// Module: CMSETUP.LIB
|
||
|
|
//
|
||
|
|
// Synopsis: Implementation of the CmIsNative function.
|
||
|
|
//
|
||
|
|
// Copyright (c) 1999 Microsoft Corporation
|
||
|
|
//
|
||
|
|
// Author: quintinb Created 01/14/99
|
||
|
|
//
|
||
|
|
//+----------------------------------------------------------------------------
|
||
|
|
#include "cmsetup.h"
|
||
|
|
#include "reg_str.h"
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//+----------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Function: CmIsNative
|
||
|
|
//
|
||
|
|
// Synopsis: This function Returns TRUE if CM is native to the current OS.
|
||
|
|
//
|
||
|
|
// Arguments: None
|
||
|
|
//
|
||
|
|
// Returns: BOOL - TRUE if CM is native.
|
||
|
|
//
|
||
|
|
// History: Created Header 1/17/99
|
||
|
|
// quintinb NTRAID 364533 -- Changed IsNative so that Win98 SE won't be
|
||
|
|
// considered Native even if CmNative is set to 1. See below
|
||
|
|
// and the bug for details.
|
||
|
|
//
|
||
|
|
//+----------------------------------------------------------------------------
|
||
|
|
BOOL CmIsNative()
|
||
|
|
{
|
||
|
|
static BOOL bCmNotNative = -1;
|
||
|
|
|
||
|
|
if (-1 == bCmNotNative)
|
||
|
|
{
|
||
|
|
const TCHAR* const c_pszRegCmNative = TEXT("CmNative");
|
||
|
|
HKEY hKey;
|
||
|
|
DWORD dwCmNative;
|
||
|
|
|
||
|
|
ZeroMemory(&dwCmNative, sizeof(DWORD));
|
||
|
|
|
||
|
|
if (ERROR_SUCCESS == RegOpenKeyEx(HKEY_LOCAL_MACHINE, c_pszRegCmAppPaths, 0, KEY_READ, &hKey))
|
||
|
|
{
|
||
|
|
DWORD dwSize = sizeof(DWORD);
|
||
|
|
DWORD dwType = REG_DWORD;
|
||
|
|
|
||
|
|
if (ERROR_SUCCESS == RegQueryValueEx(hKey, c_pszRegCmNative, NULL, &dwType,
|
||
|
|
(LPBYTE)&dwCmNative, &dwSize))
|
||
|
|
{
|
||
|
|
CPlatform cmplat;
|
||
|
|
|
||
|
|
if (cmplat.IsWin98Sr())
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// We no longer want Win98 SE to be native even though the key was set and
|
||
|
|
// CM is a system component. However, we may want to give ourselves an out
|
||
|
|
// someday so if CmNative is set to 2 on win98 SE we will still consider it Native.
|
||
|
|
// We hopefully will never need this but we might.
|
||
|
|
//
|
||
|
|
bCmNotNative = (2 != dwCmNative);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
bCmNotNative = (dwCmNative ? 0 : 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
bCmNotNative = 1;
|
||
|
|
}
|
||
|
|
RegCloseKey(hKey);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
bCmNotNative = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return !bCmNotNative;
|
||
|
|
}
|