VBA Code to Read the Active Program - vba

Question

My hope is to have this macro continually record the name of whatever program is the current active program. I have a user form that runs a timer user a Macro that recalls itself every second. I would like it to record the name of the active window in that same macro and (if different from the last name) append that on to a descriptive string.
I had originally used the "Active window.caption" only to learn that it doesn't apply to other programs (such as chrome, word, or Outlook), But below is a chunk of my code.
If ActiveApp <> ActiveWindow.Caption Then 'look at active program for name
ActiveApp = ActiveWindow.Caption 'if the last name is not the same as the current
aapp2 = ThisWorkbook.Sheets("bts").Range("b13").Value & "|" & ActiveApp & ": " & Format(dteElapsed, "hh:mm:ss")
'updates the descriptive string
ThisWorkbook.Sheets("bts").Range("b13").Value = aapp2
End If
Whole Macro:
Sub timeloop()
If ThisWorkbook.Sheets("BTS").Range("b7").Value = "" Then 'the location on theworksheet that time is stored
ThisWorkbook.Sheets("BTS").Range("b7").Value = Time '
ThisWorkbook.Sheets("BTS").Range("b12").Value = Date
End If
dteStart = ThisWorkbook.Sheets("BTS").Range("b7").Value
dteFinish = Time
DoEvents
dteElapsed = dteFinish - dteStart
If Not booldead = True Then 'See if form has died
TimeRun.Label1 = Format(dteElapsed, "hh:mm:ss")
If ActiveApp <> ActiveWindow.Caption Then 'look at active program for name
ActiveApp = ActiveWindow.Caption 'if the last name is not the same as the current
aapp2 = ThisWorkbook.Sheets("bts").Range("b13").Value & "|" & ActiveApp & ": " & Format(dteElapsed, "hh:mm:ss")
'updates the descriptive string
ThisWorkbook.Sheets("bts").Range("b13").Value = aapp2
End If
Else
Exit Sub
End If
Alerttime = Now + TimeValue("00:00:01")
Application.OnTime Alerttime, "TimeLoop"
End Sub

Answer 1

To get the Name of the active application/window, you'll need to use API calls.
This Question on the office site should help you.
Public Declare Function GetForegroundWindow Lib "user32" _
Alias "GetForegroundWindow" () As Long
Public Declare Function GetWindowText Lib "user32" _
Alias "GetWindowTextA" (ByVal hwnd As Long, _
ByVal lpString As String, ByVal cch As Long) As Long
Sub AAA()
Dim WinText As String
Dim HWnd As Long
Dim L As Long
HWnd = GetForegroundWindow()
WinText = String(255, vbNullChar)
L = GetWindowText(HWnd, WinText, 255)
WinText = Left(WinText, InStr(1, WinText, vbNullChar) - 1)
Debug.Print L, WinText
End Sub
Running the AAA sub should print the title of the active window to the debug console.