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Am I the Window on Top?

Visual Basic

Am I the Window on Top?

by  jerrygoldring  Posted    (Edited  )
If your application needs to know if the current form has focus (either within you application or System-wide) you can use this snippet to decide...

if AmIOnTop(Me) then
...
end if

The following are placed in a Module...

' Returns Handle of OS-Level Window that has the focus
Declare Function GetForegroundWindow Lib "user32" () As Long

Public Function AmIOnTop(pForm as form) as boolean
Dim lngMyWindowHandle as Long
Dim lngTopWindowHandle as Long

' Get Handle of Calling Window
lngMyWindowHandle = pform.hWnd
' Get handle of Operating System's Focused Window
lngTopWindowHandle = GetForegroundWindow()
' If same, the IAmOnTop, else not
AmIOnTop = (lngTopWindowHandle = lngMyWindowHandle)
Exit Function
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