Display PowerPoint slide show within a VB form or control window

‘ Copyright ©1999-2011, Shyam Pillai, All Rights Reserved.

‘ ------------------------------------------------------------------------

‘ You are free to use this code within your own applications, add-ins,

‘ documents etc but you are expressly forbidden from selling or

‘ otherwise distributing this source code without prior consent.

‘ This includes both posting free demo projects made from this

‘ code as well as reproducing the code in text or html format.

‘ ------------------------------------------------------------------------

Option Explicit

Const APP_NAME = "PowerPoint in VB window"

Const SHOW_FILE = "C:\PowerPoint\Sample.ppt"

‘ PowerPoint Constants

Const ppShowTypeSpeaker = 1

‘ Undocument constant used to display show in a window

‘ without PowerPoint command bars.

Const ppShowTypeInWindow = 1000

Public oPPTApp As Object

Public oPPTPres As Object

‘ API‘s used:
‘ To locate the handle of the PowerPoint slideshow window

Private Declare Function FindWindow Lib "user32" _

        Alias "FindWindowA" (ByVal lpClassName As String, _

        ByVal lpWindowName As Long) As Long

‘ To set fram control as the parent of the slide show window

Private Declare Function SetParent Lib "user32" _

        (ByVal hWndChild As Long, _

        ByVal hWndNewParent As Long) As Long

‘ To set the caption of the window

Private Declare Function SetWindowText Lib "user32" _

        Alias "SetWindowTextA" (ByVal hwnd As Long, _

        ByVal lpString As String) As Long

Private Sub cmdShow_Click(Index As Integer)

    Dim screenClasshWnd As Long

    On Error Resume Next

    Set oPPTApp = CreateObject("PowerPoint.Application")

    If Not oPPTApp Is Nothing Then

        Set oPPTPres = oPPTApp.Presentations.Open(SHOW_FILE, , , False)

        If Not oPPTPres Is Nothing Then

            With oPPTPres

                Select Case Index

                Case Is = 0

                    With .SlideShowSettings

                        .ShowType = ppShowTypeSpeaker

                        With .Run

                            .Width = frmSS.Width

                            .Height = frmSS.Height

                        End With

                    End With

                    screenClasshWnd = FindWindow("screenClass", 0&)

                    SetParent screenClasshWnd, frmSS.hwnd

                    With Me

                        .Height = 4545

                        .SetFocus

                    End With

                Case Is = 1

                    With .SlideShowSettings

                        .ShowType = ppShowTypeInWindow 

                        .Run

                    End With

                    Call SetWindowText(FindWindow("screenClass", 0&), APP_NAME)

                End Select

            End With

        Else

            MsgBox "Could not open the presentation.", vbCritical, APP_NAME

        End If

    Else

        MsgBox "Could not instantiate PowerPoint.", vbCritical, APP_NAME

    End If

End Sub

Private Sub Form_Initialize()

    With Me

        .ScaleMode = vbPoints

        .Caption = APP_NAME

    End With

End Sub

Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)

    On Error Resume Next

    lblMessage.Visible = True

    DoEvents

    If Not oPPTPres Is Nothing Then

        oPPTPres.Close

    End If

    Set oPPTPres = Nothing

    If Not oPPTApp Is Nothing Then

        oPPTApp.Quit

    End If

    Set oPPTApp = Nothing

    lblMessage.Visible = False

End Sub