C / C++ / MFC

LPCTSTR szPossibleNames[] = 
{  _T("name1"), _T("name2"),...,_T("nameN") };

for(int i=0; i < X; ++i)
{
    if( FindWindow(NULL, szPossibleNames[i]) )
      break;
}
//other stuff...

HWND FindChildAmongManyChildDialogs(HWND hWndMain, 
                  LPCTSTR szClassName, 
                  LPCTSTR szWindowTitle)
//
//This function was written to 
//find a child window when there is a main 
//window, and then several dialogs that 
//are children, and the window we want 
//is on one of those dialogs.
//
//This is based on the AirCard 555 watcher program,
//and Spy++
//
//
//
{
	CString str, strTitle;
	TCHAR szClass[ 200 + 1 ] = {0};

	CWnd * pChild = CWnd::FromHandle(::GetWindow(hWndMain, GW_CHILD) );
	CWnd * pLast = NULL;
	if( pChild ) 
		pLast = pChild->GetWindow(GW_HWNDLAST);

	if( !pChild )
		return NULL;
	do{
		
		GetClassName(pChild->GetSafeHwnd(), szClass, 200);	
		pChild->GetWindowText(strTitle);

		if(_tcsicmp(szClass, _T("Dialog")) == 0 )
		{
			
			HWND hChild = FindChildWindow(pChild, szClassName, szWindowTitle);
			if( hChild ) 
				return hChild;
		}
		pChild = pChild->GetWindow(GW_HWNDNEXT);

	}while( pChild && (pChild != pLast) );
	
	return NULL;
}

HWND FindChildWindow(CWnd * pParent, LPCTSTR szClassName, LPCTSTR szWindowTitle)
{
	ASSERT( szClassName || szWindowTitle );
	ASSERT( pParent );
	
	CString strTitle;
	TCHAR szClass[ 200 + 1] = {NULL};

	CWnd * pChild = pParent->GetWindow(GW_CHILD);
	ASSERT( pChild );
	CWnd * pLast = NULL;
	if( pChild )
		pLast = pChild->GetWindow(GW_HWNDLAST);

	if( !pChild )
		return NULL;

	do
	{
		GetClassName(pChild->GetSafeHwnd(), szClass, 200);
		pChild->GetWindowText(strTitle);

		if( (!szClassName || _tcsicmp(szClass, szClassName) == 0) 
		&&  (!szWindowTitle || strTitle.CompareNoCase(szWindowTitle) == 0) )
		{
			return pChild->GetSafeHwnd();
		}
			
		pChild = pChild->GetWindow(GW_HWNDNEXT);

	}while( pChild && (pChild != pLast) );

	return NULL;
}