Imports System.Collections.Generic
Imports System.Runtime.InteropServices
Imports System.Text
 
Public Class ApiWindow
    Public MainWindowTitle As String = ""
    Public ClassName As String = ""
    Public hWnd As Int32
End Class
 
''' <summary> 
''' Enumerate top-level and child windows 
''' </summary> 
''' <example> 
''' Dim enumerator As New WindowsEnumerator()
''' For Each top As ApiWindow in enumerator.GetTopLevelWindows()
'''    Console.WriteLine(top.MainWindowTitle)
'''    For Each child As ApiWindow child in enumerator.GetChildWindows(top.hWnd) 
'''        Console.WriteLine(" " + child.MainWindowTitle)
'''    Next child
''' Next top
''' </example> 
Public Class WindowsEnumerator
 
    Private Delegate Function EnumCallBackDelegate(ByVal hwnd As Integer, ByVal lParam As Integer) As Integer
 
    ' Top-level windows.
    Private Declare Function EnumWindows Lib "user32" _
     (ByVal lpEnumFunc As EnumCallBackDelegate, ByVal lParam As Integer) As Integer
 
    ' Child windows.
    Private Declare Function EnumChildWindows Lib "user32" _
     (ByVal hWndParent As Integer, ByVal lpEnumFunc As EnumCallBackDelegate, ByVal lParam As Integer) As Integer
 
    ' Get the window class.
    Private Declare Function GetClassName _
     Lib "user32" Alias "GetClassNameA" _
     (ByVal hwnd As Integer, ByVal lpClassName As StringBuilder, ByVal nMaxCount As Integer) As Integer
 
    ' Test if the window is visible--only get visible ones.
    Private Declare Function IsWindowVisible Lib "user32" _
     (ByVal hwnd As Integer) As Integer
 
    ' Test if the window's parent--only get the one's without parents.
    Private Declare Function GetParent Lib "user32" _
     (ByVal hwnd As Integer) As Integer
 
    ' Get window text length signature.
    Private Declare Function SendMessage _
     Lib "user32" Alias "SendMessageA" _
     (ByVal hwnd As Int32, ByVal wMsg As Int32, ByVal wParam As Int32, ByVal lParam As Int32) As Int32
 
    ' Get window text signature.
    Private Declare Function SendMessage _
     Lib "user32" Alias "SendMessageA" _
     (ByVal hwnd As Int32, ByVal wMsg As Int32, ByVal wParam As Int32, ByVal lParam As StringBuilder) As Int32
 
    Private _listChildren As New List(Of ApiWindow)
    Private _listTopLevel As New List(Of ApiWindow)
 
    Private _topLevelClass As String = ""
    Private _childClass As String = ""
 
    ''' <summary>
    ''' Get all top-level window information
    ''' </summary>
    ''' <returns>List of window information objects</returns>
    Public Overloads Function GetTopLevelWindows() As List(Of ApiWindow)
 
        EnumWindows(AddressOf EnumWindowProc, &H0)
 
        Return _listTopLevel
 
    End Function
 
    Public Overloads Function GetTopLevelWindows(ByVal className As String) As List(Of ApiWindow)
 
        _topLevelClass = className
 
        Return Me.GetTopLevelWindows()
 
    End Function
 
    ''' <summary>
    ''' Get all child windows for the specific windows handle (hwnd).
    ''' </summary>
    ''' <returns>List of child windows for parent window</returns>
    Public Overloads Function GetChildWindows(ByVal hwnd As Int32) As List(Of ApiWindow)
 
        ' Clear the window list.
        _listChildren = New List(Of ApiWindow)
 
        ' Start the enumeration process.
        EnumChildWindows(hwnd, AddressOf EnumChildWindowProc, &H0)
 
        ' Return the children list when the process is completed.
        Return _listChildren
 
    End Function
 
    Public Overloads Function GetChildWindows(ByVal hwnd As Int32, ByVal childClass As String) As List(Of ApiWindow)
 
        ' Set the search
        _childClass = childClass
 
        Return Me.GetChildWindows(hwnd)
 
    End Function
 
    ''' <summary>
    ''' Callback function that does the work of enumerating top-level windows.
    ''' </summary>
    ''' <param name="hwnd">Discovered Window handle</param>
    ''' <returns>1=keep going, 0=stop</returns>
    Private Function EnumWindowProc(ByVal hwnd As Int32, ByVal lParam As Int32) As Int32
 
        ' Eliminate windows that are not top-level.
        If GetParent(hwnd) = 0 AndAlso CBool(IsWindowVisible(hwnd)) Then
 
            ' Get the window title / class name.
            Dim window As ApiWindow = GetWindowIdentification(hwnd)
 
            ' Match the class name if searching for a specific window class.
            If _topLevelClass.Length = 0 OrElse window.ClassName.ToLower() = _topLevelClass.ToLower() Then
                _listTopLevel.Add(window)
            End If
 
        End If
 
        ' To continue enumeration, return True (1), and to stop enumeration 
        ' return False (0).
        ' When 1 is returned, enumeration continues until there are no 
        ' more windows left.
 
        Return 1
 
    End Function
 
    ''' <summary>
    ''' Callback function that does the work of enumerating child windows.
    ''' </summary>
    ''' <param name="hwnd">Discovered Window handle</param>
    ''' <returns>1=keep going, 0=stop</returns>
    Private Function EnumChildWindowProc(ByVal hwnd As Int32, ByVal lParam As Int32) As Int32
 
        Dim window As ApiWindow = GetWindowIdentification(hwnd)
 
        ' Attempt to match the child class, if one was specified, otherwise
        ' enumerate all the child windows.
        If _childClass.Length = 0 OrElse window.ClassName.ToLower() = _childClass.ToLower() Then
            _listChildren.Add(window)
        End If
 
        Return 1
 
    End Function
 
    ''' <summary>
    ''' Build the ApiWindow object to hold information about the Window object.
    ''' </summary>
    Private Function GetWindowIdentification(ByVal hwnd As Integer) As ApiWindow
 
        Const WM_GETTEXT As Int32 = &HD
        Const WM_GETTEXTLENGTH As Int32 = &HE
 
        Dim window As New ApiWindow()
 
        Dim title As New StringBuilder()
 
        ' Get the size of the string required to hold the window title.
        Dim size As Int32 = SendMessage(hwnd, WM_GETTEXTLENGTH, 0, 0)
 
        ' If the return is 0, there is no title.
        If size > 0 Then
            title = New StringBuilder(size + 1)
 
            SendMessage(hwnd, WM_GETTEXT, title.Capacity, title)
        End If
 
        ' Get the class name for the window.
        Dim classBuilder As New StringBuilder(64)
        GetClassName(hwnd, classBuilder, 64)
 
        ' Set the properties for the ApiWindow object.
        window.ClassName = classBuilder.ToString()
        window.MainWindowTitle = title.ToString()
        window.hWnd = hwnd
 
        Return window
 
    End Function
 
End Class

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Dim enumerator As New WindowsEnumerator()
    For Each top As ApiWindow In enumerator.GetTopLevelWindows()
        If top.MainWindowTitle.ToLower.Contains("firefox") Then
            RichTextBox1.Text += vbNewLine & ("main handle: " & top.MainWindowTitle)
            For Each child As ApiWindow In enumerator.GetChildWindows(top.hWnd)
                RichTextBox1.Text += vbNewLine & ("child handle: " & " " + child.MainWindowTitle)
            Next
        End If
    Next top
 
End Sub

C:\>cmdow | find /i "firefox"

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Imports System.Runtime.InteropServices
 
Public Class Form1
 
    Public Declare Function FindWindow Lib "user32.dll" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
    Public Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
 
    Public Shared Function WindowHandle(sTitle As String) As Long
        Return FindWindow(vbNullString, sTitle)
    End Function
 
    Private Shared Function GetSystemTrayHandle() As IntPtr
        Dim hWndTray As IntPtr = FindWindow("Shell_TrayWnd", Nothing)
        If hWndTray <> IntPtr.Zero Then
            hWndTray = FindWindowEx(hWndTray, IntPtr.Zero, "TrayNotifyWnd", Nothing)
            If hWndTray <> IntPtr.Zero Then
                hWndTray = FindWindowEx(hWndTray, IntPtr.Zero, "SysPager", Nothing)
                If hWndTray <> IntPtr.Zero Then
                    hWndTray = FindWindowEx(hWndTray, IntPtr.Zero, "ToolbarWindow32", Nothing)
                    Return hWndTray
                End If
            End If
        End If
 
        Return IntPtr.Zero
    End Function
 
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        MsgBox(WindowHandle("Steam")) ' 6687230
        MsgBox(GetSystemTrayHandle()) ' 65728
    End Sub
 
End Class

#Region " Centered Messagebox "
 
    ' [ Centered Messagebox Function ]
    '
    ' Instructions :
    ' 1. Add the Class
    ' 2. Use it
    '
    ' Examples :
    ' Using New Centered_MessageBox(Me)
    '     MessageBox.Show("Test Text", "Test Title", MessageBoxButtons.OK)
    ' End Using
 
    ' Centered_MessageBox.vb
#Region " Centered MessageBox Class"
 
Imports System.Text
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Runtime.InteropServices
 
    Class Centered_MessageBox
        Implements IDisposable
        Private mTries As Integer = 0
        Private mOwner As Form
 
        Public Sub New(owner As Form)
            mOwner = owner
            owner.BeginInvoke(New MethodInvoker(AddressOf findDialog))
        End Sub
 
        Private Sub findDialog()
            ' Enumerate windows to find the message box
            If mTries < 0 Then
                Return
            End If
            Dim callback As New EnumThreadWndProc(AddressOf checkWindow)
            If EnumThreadWindows(GetCurrentThreadId(), callback, IntPtr.Zero) Then
                If System.Threading.Interlocked.Increment(mTries) < 10 Then
                    mOwner.BeginInvoke(New MethodInvoker(AddressOf findDialog))
                End If
            End If
        End Sub
        Private Function checkWindow(hWnd As IntPtr, lp As IntPtr) As Boolean
            ' Checks if <hWnd> is a dialog
            Dim sb As New StringBuilder(260)
            GetClassName(hWnd, sb, sb.Capacity)
            If sb.ToString() <> "#32770" Then
                Return True
            End If
            ' Got it
            Dim frmRect As New Rectangle(mOwner.Location, mOwner.Size)
            Dim dlgRect As RECT
            GetWindowRect(hWnd, dlgRect)
            MoveWindow(hWnd, frmRect.Left + (frmRect.Width - dlgRect.Right + dlgRect.Left) \ 2, frmRect.Top + (frmRect.Height - dlgRect.Bottom + dlgRect.Top) \ 2, dlgRect.Right - dlgRect.Left, dlgRect.Bottom - dlgRect.Top, True)
            Return False
        End Function
        Public Sub Dispose() Implements IDisposable.Dispose
            mTries = -1
        End Sub
 
        ' P/Invoke declarations
        Private Delegate Function EnumThreadWndProc(hWnd As IntPtr, lp As IntPtr) As Boolean
        <DllImport("user32.dll")> _
        Private Shared Function EnumThreadWindows(tid As Integer, callback As EnumThreadWndProc, lp As IntPtr) As Boolean
        End Function
        <DllImport("kernel32.dll")> _
        Private Shared Function GetCurrentThreadId() As Integer
        End Function
        <DllImport("user32.dll")> _
        Private Shared Function GetClassName(hWnd As IntPtr, buffer As StringBuilder, buflen As Integer) As Integer
        End Function
        <DllImport("user32.dll")> _
        Private Shared Function GetWindowRect(hWnd As IntPtr, ByRef rc As RECT) As Boolean
        End Function
        <DllImport("user32.dll")> _
        Private Shared Function MoveWindow(hWnd As IntPtr, x As Integer, y As Integer, w As Integer, h As Integer, repaint As Boolean) As Boolean
        End Function
        Private Structure RECT
            Public Left As Integer
            Public Top As Integer
            Public Right As Integer
            Public Bottom As Integer
        End Structure
    End Class
 
#End Region
 
#End Region

Dim My_Color As Color = Color.FromArgb(97, 31, 28)

#Region " Hex To Dec Function "
 
    ' [ Hex To Dec Function ]
    '
    ' // By Elektro H@cker
    '
    ' Examples :
    ' MsgBox(Hex_To_Dec("0x020032")) ' Result: 131122
 
    Private Function Hex_To_Dec(ByVal str As String) As Int32
        Return Convert.ToInt32(str, 16)
    End Function
 
#End Region

#Region " Dec To Hex Function "
 
    ' [ Dec To Hex Function ]
    '
    ' // By Elektro H@cker
    '
    ' Examples :
    ' MsgBox(Dec_To_Hex(131122)) ' Result: 0x020032
 
    Private Function Dec_To_Hex(ByVal int As Int32) As String
        Return Convert.ToString(int, 16)
    End Function
 
#End Region

#Region " Font Is Installed? Function "
 
    ' [ Font Is Installed? Function ]
    '
    ' Examples :
    ' MsgBox(Font_Is_Installed("Lucida Console"))
 
    Public Shared Function Font_Is_Installed(ByVal FontName As String) As Boolean
        Using TestFont As Font = New Font(FontName, 8)
            Return CBool(String.Compare(FontName, TestFont.Name, StringComparison.InvariantCultureIgnoreCase) = 0)
        End Using
    End Function
 
#End Region