The example below shows how to use VB form/control as a container application to display a PowerPoint slideshow. It as shows how to make use of an undocumented slide show setting to run the slideshow in a window of it’s own without any PowerPoint toolbars.
System requirements:
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Visual Basic 6.0 to compile the code
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PowerPoint installed on the target system
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‘ ————————————————————————‘ 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: 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 |
