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Tip of the Day
Language: VB4/32,VB5,VB6
Expertise: Intermediate
May 19, 2001

WindowDescription - Get a textual description of a window given its hWnd

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

' Return a text description of a given window
' (consists of hWnd and classname, optionally followed by caption)

Function WindowDescription(ByVal hWnd As Long) As String
    Dim buffer As String * 256
    Dim length As Long
    Dim text As String
    Dim classname As String
    
    length = GetWindowText(hWnd, buffer, Len(buffer))
    text = Left$(buffer, length)
    length = GetClassName(hWnd, buffer, Len(buffer))
    classname = Left$(buffer, length)
    
    WindowDescription = "[" & Right$("0000000" & Hex$(hWnd), _
        8) & "] " & classname
    If Len(text) Then
        WindowDescription = WindowDescription & " - """ & text & """"
    End If
End Function
Francesco Balena
 
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