void CSetDBID::OnOK()
{
UpdateData(TRUE);
// Has user changed the index?
if (m_iInitialDBIndex != m_iDBIndex) {
// Has user disabled index feature?
if (m_iDBIndex != 0) {
// Try to get this index
wchar_t szName[MAX_PATH];
CreateUniqueName(UNIQUE_PWS_GUID, szName, MAX_PATH, SI_TRUSTEE_UNIQUE);
CString csUserSBIndex;
csUserSBIndex.Format(L"%s:DBI:%02d", static_cast<LPCWSTR>(szName), m_iDBIndex);
m_hMutexDBIndex = CreateMutex(NULL, FALSE, csUserSBIndex);
DWORD dwerr = ::GetLastError();
if (dwerr == ERROR_ALREADY_EXISTS || dwerr == ERROR_ACCESS_DENIED) {
CGeneralMsgBox gmb;
gmb.AfxMessageBox(IDS_DBIDINUSE, MB_OK | MB_ICONEXCLAMATION);
m_edtSBIndex.SetFocus();
return;
}
}
}
CPWDialog::EndDialog(m_iDBIndex);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Constructors / Destructors
///////////////////////////////////////////////////////////////////////////////////////////////////////////////
CSingleInstance::CSingleInstance(const string& name)
{
// Init vars
char buffer[MAX_PATH];
m_name = string(CreateUniqueName(name.c_str(), (char*)&buffer, SI_SESSION_UNIQUE));
m_mmfilename = name + "_SingleInstance_MMF";
m_isFirstInstance = false;
m_hInstanceDataMutex = CreateMutex(NULL, false, "CSingleInstanceDataMutex");
m_mutexWait = NULL;
m_hExecuteLock = NULL;
}
// Returns TRUE, if there exists, according to the meaning of "unique" passed
// in nMode, another instance of this process.
BOOL IsInstancePresent(
LPCTSTR pszGUID,
int nMode // = SI_DESKTOP_UNIQUE
)
{
static HANDLE hMutex = NULL;
if( hMutex == NULL ) {
TCHAR szName[ MAX_PATH ];
hMutex = CreateMutex( NULL, FALSE, CreateUniqueName( pszGUID, szName, nMode ) );
return ( GetLastError() == ERROR_ALREADY_EXISTS || GetLastError() == ERROR_ACCESS_DENIED );
}
return FALSE;
}
