How do I list the id and title of all the child windows?

Posted on 2004-11-01
Last Modified: 2008-01-09
I would like to list out all of the id's and titles of child windows.

Here's what I do:

Close all the IEXPLORE browsers.

Start a new IEXPLORE.

Then go to File -> New Window
-- I believe this spawns a child window

-- Continue for additional windows # Then go to File -> New Window

Currently when I run below code; it only displays information for the actively window.

I would like to display the information for all windows not just the active or focuesed one.

        Dim process As Process
        Dim p2 As Process() = process.GetProcessesByName("IEXPLORE")

        Command1.Enabled = False
        For Each p In p2
            items(0) = p.ProcessName
            items(1) = p.Id.ToString
            If Not IntPtr.Zero.Equals(p.MainWindowHandle) Then
                items(2) = p.MainWindowHandle.ToString
                If GetWindowRect(p.MainWindowHandle, r) <> 0 Then
                    If IsIconic(p.MainWindowHandle) = 0 Then
                        items(3) = "(" & r.Left.ToString & ", " & r.Top.ToString & ")"
                        items(4) = (r.Right - r.Left).ToString & "x" & (r.Bottom - r.Top).ToString
                        items(3) = "[Minimized]"
                        items(4) = "[Minimized]"
                    End If
                    items(3) = "[Error]"
                    items(4) = "[Error]"
                End If
                items(5) = p.MainWindowTitle
                items(2) = ""
                items(3) = ""
                items(4) = ""
                items(5) = ""
            End If

            ListView1.Items.Add(New ListViewItem(items))
Question by:vaultworld
    LVL 28

    Accepted Solution

    try this

    Dim Child as Form
          For Each Child in Me.MdiChildren
    LVL 1

    Author Comment

    Admin please close this question because its not possible using Process.
    LVL 28

    Expert Comment

    >>Admin please close this question because its not possible using Process.

    The original question was :
    How do I list the id and title of all the child windows?

    Proces was never mentioned anywhere
    LVL 1

    Author Comment

    Here's the final solution;

    Public Class Form1
        Inherits System.Windows.Forms.Form

    #Region " Windows Form Designer generated code "

        Public Sub New()

            'This call is required by the Windows Form Designer.

            'Add any initialization after the InitializeComponent() call

        End Sub

        'Form overrides dispose to clean up the component list.
        Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
            If disposing Then
                If Not (components Is Nothing) Then
                End If
            End If
        End Sub

        'Required by the Windows Form Designer
        Private components As System.ComponentModel.IContainer

        'NOTE: The following procedure is required by the Windows Form Designer
        'It can be modified using the Windows Form Designer.  
        'Do not modify it using the code editor.
        Friend WithEvents ListBox1 As System.Windows.Forms.ListBox
        Friend WithEvents Button1 As System.Windows.Forms.Button
        <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
            Me.ListBox1 = New System.Windows.Forms.ListBox()
            Me.Button1 = New System.Windows.Forms.Button()
            Me.ListBox1.Location = New System.Drawing.Point(32, 16)
            Me.ListBox1.Name = "ListBox1"
            Me.ListBox1.Size = New System.Drawing.Size(240, 147)
            Me.ListBox1.TabIndex = 0
            Me.Button1.Location = New System.Drawing.Point(32, 200)
            Me.Button1.Name = "Button1"
            Me.Button1.Size = New System.Drawing.Size(240, 64)
            Me.Button1.TabIndex = 1
            Me.Button1.Text = "Button1"
            Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
            Me.ClientSize = New System.Drawing.Size(292, 273)
            Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button1, Me.ListBox1})
            Me.Name = "Form1"
            Me.Text = "Form1"

        End Sub

    #End Region

        Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
            Lst = ListBox1
            EnumWindows(AddressOf EnumWindowsCallBack, 0)
        End Sub

    End Class

    Module Module1

        Public Lst As ListBox

        Public Delegate Function EnumWindowsProc(ByVal hwnd As IntPtr, ByVal lParam As Int32) As Int32

        Public Declare Function EnumWindows Lib "user32.dll" _
                (ByVal lpEnumFunc As EnumWindowsProc, ByVal lParam As Int32) As Int32

        Public Declare Function GetWindowTextLength Lib "user32.dll" Alias "GetWindowTextLengthA" _
            (ByVal hwnd As IntPtr) As Int32

        Public Declare Function GetWindowText Lib "user32.dll" Alias "GetWindowTextA" _
            (ByVal hwnd As IntPtr, ByVal lpString As String, ByVal cch As Int32) As Int32

        'Callback function to enum windows
        Public Function EnumWindowsCallBack(ByVal hwnd As IntPtr, ByVal lParam As Int32) As Int32
            Dim sSave As String

            'Get the windowtext length
            sSave = Space(GetWindowTextLength(hwnd) + 1)

            'get the window text
            GetWindowText(hwnd, sSave, Len(sSave))

            'remove the last Chr(0)
            sSave = Microsoft.VisualBasic.Left(sSave, Len(sSave) - 1)

            'Error below: Reference to a non-shared member requires an Object Reference

            If sSave.Trim <> "" Then
            End If

            Return 1 'continue enumeration        
        End Function

    End Module

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