Using timer to get Excel title - excel

Question

I have following code to get title of current opened excel file this code working fine. I use timer to every 10 seconds if title change then add new title in list1.
So question is there any method or event to detect if title change then my code work otherwise it not work not check. timer check every 10 seconds my pc work slow if I run this code
Private Const GW_HWNDNEXT = 2
Private Declare Function GetWindow Lib "user32" (ByVal hWnd As Long, _
ByVal wCmd As Long) As Long
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
(ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function GetClassName Lib "user32" Alias "GetClassNameA" _
(ByVal hWnd As Long, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long
Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" _
(ByVal hWnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
Sub ListWins(Optional Title = "*", Optional Class = "*")
Dim hWndThis As Long
hWndThis = FindWindow(vbNullString, vbNullString)
While hWndThis
Dim sTitle As String, sClass As String
sTitle = Space$(255)
sTitle = Left$(sTitle, GetWindowText(hWndThis, sTitle, Len(sTitle)))
sClass = Space$(255)
sClass = Left$(sClass, GetClassName(hWndThis, sClass, Len(sClass)))
If sTitle Like Title And sClass Like Class Then
Debug.Print sTitle, sClass
List1.AddItem (sTitle)
End If
hWndThis = GetWindow(hWndThis, GW_HWNDNEXT)
Wend
End Sub
Private Sub Timer1_Timer()
ListWins "*.xls*"
End Sub

Answer 1

The answer is No. AFAIK, No there is no event as such in vb6 which will trap the title change in Excel or any other window. Also unfortunately 10 second timer might not be good. What happens if the title changes every 2 seconds? It will not retrieve all the titles
However try this alternative which does not use the Timer Control. See if your pc is still slow...
Sub Sample()
'
' ~~> Rest of your code
'
Wait 2 '<~~ Wait for 2 seconds
'
' ~~> Rest of your code
'
End Sub
Private Sub Wait(ByVal nSec As Long)
nSec = nSec + Timer
While nSec > Timer
DoEvents
Wend
End Sub

Answer 2

You can use the Excel COM API to do this. Unfortunately, there is no way of getting the Excel window title - but you could easily manufacture it by appending " - Microsoft Excel". Use the FullName property if you want the complete path.
Option Explicit
Private WithEvents m_oApplication As Excel.Application
Private Sub Command_Click()
' Get a reference to the FIRST instance of the Excel application.
Set m_oApplication = GetObject(, "Excel.Application")
End Sub
Private Sub m_oApplication_NewWorkbook(ByVal Wb As Excel.Workbook)
List1.AddItem Wb.Name
End Sub
Private Sub m_oApplication_WorkbookAfterSave(ByVal Wb As Excel.Workbook, ByVal Success As Boolean)
'List1.AddItem "WorkbookAfterSave: " & Wb.FullName
List1.AddItem Wb.Name
End Sub
Private Sub m_oApplication_WorkbookOpen(ByVal Wb As Excel.Workbook)
List1.AddItem Wb.Name
End Sub