by Ihab Abu Hilal (4 Submissions)
Category: Internet/HTML
Compatability: VB 6.0
Difficulty: Unknown Difficulty
Originally Published: Thu 31st January 2002
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
See What URL Internet Explorer/Netscape Is Displaying
API Declarations
Option Explicit
Public Type ProcData
AppHwnd As Long
title As String
Placement As String
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Declare Function EnumWindows Lib "user32" (ByVal lpEnumFunc As _
Any, ByVal lParam 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
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 SendMessage Lib "user32" Alias "SendMessageA" (ByVal _
hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Const WM_GETTEXT = &HD
Private Const WM_GETTEXTLENGTH = &HE
Private Const GW_CHILD = 5
Private Const GW_HWNDNEXT = 2
Private Const GW_HWNDFIRST = 0
' ***********************************************
' If this window is of the Edit class, return
' its contents. Otherwise search its children
' for an Edit object.
' ***********************************************
Public Function EditInfo(window_hwnd As Long) As String
Dim txt As String
Dim buf As String
Dim buflen As Long
Dim child_hwnd As Long
Dim children() As Long
Dim num_children As Integer
Dim i As Integer
' Get the class name.
buflen = 256
buf = Space$(buflen - 1)
buflen = GetClassName(window_hwnd, buf, buflen)
buf = Left$(buf, buflen)
' See if we found an Edit object.
If buf = "Edit" Then
EditInfo = WindowText(window_hwnd)
Exit Function
End If
' It's not an Edit object. Search the children.
' Make a list of the child windows.
num_children = 0
child_hwnd = GetWindow(window_hwnd, GW_CHILD)
Do While child_hwnd <> 0
num_children = num_children + 1
ReDim Preserve children(1 To num_children)
children(num_children) = child_hwnd
child_hwnd = GetWindow(child_hwnd, GW_HWNDNEXT)
Loop
' Get information on the child windows.
For i = 1 To num_children
txt = EditInfo(children(i))
If txt <> "" Then Exit For
Next i
EditInfo = txt
End Function
' ************************************************
' Return the text associated with the window.
' ************************************************
Public Function WindowText(window_hwnd As Long) As String
Dim txtlen As Long
Dim txt As String
WindowText = ""
If window_hwnd = 0 Then Exit Function
txtlen = SendMessage(window_hwnd, WM_GETTEXTLENGTH, 0, 0)
If txtlen = 0 Then Exit Function
txtlen = txtlen + 1
txt = Space$(txtlen)
txtlen = SendMessage(window_hwnd, WM_GETTEXT, txtlen, ByVal txt)
WindowText = Left$(txt, txtlen)
End Function
Public Function EnumProc(ByVal app_hwnd As Long, ByVal lParam As Long) As Boolean
Dim buf As String * 1024
Dim title As String
Dim length As Long
' Get the window's title.
length = GetWindowText(app_hwnd, buf, Len(buf))
title = Left$(buf, length)
' this exaple will search for Internet Explorer URL. To search for Netscape URL
' replace " - Microsoft Internet Explorer" with " - Netscape".
If Right$(title, 30) = " - Microsoft Internet Explorer" Then
' This is it. Find the ComboBox information.
Form1.Label1 = EditInfo(app_hwnd)
' Stop searching.
EnumProc = 0
Else
' Continue searching til find it.
EnumProc = 1
End If
End Function
VBcoders
'Form Code
Private Sub Command1_Click()
Label1.Caption = ""
EnumWindows AddressOf EnumProc, 0
End Sub