Question

我正在编写一个循环文件夹的脚本，并根据某些条件创建图表，然后将这些图表导出到powerpoint。目前，创建130个图表需要290秒，其中286个由powerpoint使用。我怀疑这是一个主要原因是无法关闭powerpoint的screenupdd。我尝试使用此处的代码http://skp.mvps.org/ppt00033.htm来解决此问题。但是，我没有注意到任何影响。虽然我可以在后台使用alt-tab并保持powerpoint，但当切换到Powerpoint时，所有的更改都会显示出来，你基本上可以看到它如何减慢程序的速度。有谁知道我如何使用这段代码？它应该是一个类模块，我应该做什么或者我做错了什么？下面是我借用的代码片段以及我尝试调用它的示例：

Option Explicit
' UserDefined Error codes
Const ERR_NO_WINDOW_HANDLE As Long = 1000
Const ERR_WINDOW_LOCK_FAIL As Long = 1001
Const ERR_VERSION_NOT_SUPPORTED As Long = 1002

' API declarations for FindWindow() & LockWindowUpdate()
 ' Use FindWindow API to locate the PowerPoint handle.
Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As Long) As Long

' Use LockWindowUpdate to prevent/enable window refresh
Declare Function LockWindowUpdate Lib "user32" (ByVal hwndLock As Long) As Long

' Use UpdateWindow to force a refresh of the PowerPoint window
Declare Function UpdateWindow Lib "user32" (ByVal hwnd As Long) As Long

Property Let ScreenUpdating(State As Boolean)

Static hwnd As Long
Dim VersionNo As String
' Get Version Number
    If State = False Then
        VersionNo = Left(Application.Version, InStr(1, Application.Version, ".") - 1)
        'Get handle to the main application window using ClassName
        Select Case VersionNo
        Case "8"
        ' For PPT97:
            hwnd = FindWindow("PP97FrameClass", 0&)
        Case "9"
        ' For PPT2K:
            hwnd = FindWindow("PP9FrameClass", 0&)
        Case "10"
        ' For XP:
        hwnd = FindWindow("PP10FrameClass", 0&)
        Case "11"
        ' For 2003:
        hwnd = FindWindow("PP11FrameClass", 0&)
        Case "12"
        ' For 2007:
        hwnd = FindWindow("PP12FrameClass", 0&)
        Case "14"
        ' For 2010:
        hwnd = FindWindow("PPTFrameClass", 0&)
        Case Else
        Err.Raise Number:=vbObjectError + ERR_VERSION_NOT_SUPPORTED, _
        Description:="Newer version."
        Exit Property
        End Select

        If hwnd = 0 Then
        Err.Raise Number:=vbObjectError + ERR_NO_WINDOW_HANDLE, _
        Description:="Unable to get the PowerPoint Window handle"
        Exit Property
        End If

        If LockWindowUpdate(hwnd) = 0 Then
                Err.Raise Number:=vbObjectError + ERR_WINDOW_LOCK_FAIL, _
        Description:="Unable to set a  PowerPoint window lock"
        Exit Property
        Else
        LockWindowUpdate (hwnd)
        End If

    Else
    'Unlock the Window to refresh
    LockWindowUpdate (0&)
    UpdateWindow (hwnd)
    hwnd = 0
   End If
End Property


Sub TestSub()
' Lock screen redraw
 If ScreenUpdatingOff = True Then ScreenUpdating = False

 ' --- Loop through charts in Excel and export them to Powerpoint
 ' Redraw screen again
ScreenUpdating = True

End Sub

非常感谢提前。很奇怪，这个功能并不容易获得，现在我需要你的帮助！

Answer 1

假设您将代码放在名为Class1的类模块中，您可以在主代码中创建一个像这样的实例......

Dim myClass1 as Class1

Set myClass1 = New Class1

Class1.ScreenUpdating = False

编辑：只需使用最初编写的代码：无需添加任何内容。坏消息是，我在PPT 2013中的测试速度没有任何差别。您可以通过将其设置为False来验证其工作情况。

课程模块cScreenUpdating ...

Option Explicit
' UserDefined Error codes
Const ERR_NO_WINDOW_HANDLE As Long = 1000
Const ERR_WINDOW_LOCK_FAIL As Long = 1001
Const ERR_VERSION_NOT_SUPPORTED As Long = 1002

' API declarations for FindWindow() & LockWindowUpdate()
' Use FindWindow API to locate the PowerPoint handle.
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
              (ByVal lpClassName As String, _
               ByVal lpWindowName As Long) As Long

' Use LockWindowUpdate to prevent/enable window refresh
Private Declare Function LockWindowUpdate Lib "user32" _
              (ByVal hwndLock As Long) As Long

' Use UpdateWindow to force a refresh of the PowerPoint window

Private Declare Function UpdateWindow Lib "user32" (ByVal hWnd As Long) As Long

Property Let ScreenUpdating(State As Boolean)

Static hWnd As Long
Dim VersionNo As String

' Get Version Number

  If State = False Then
    VersionNo = Left(Application.Version, _
        InStr(1, Application.Version, ".") - 1)

    'Get handle to the main application window using ClassName

    Select Case VersionNo

      Case "8"
      ' For PPT97:
          hWnd = FindWindow("PP97FrameClass", 0&)
      Case "9"
      ' For PPT2K:
          hWnd = FindWindow("PP9FrameClass", 0&)
      Case "10"
      ' For XP:
        hWnd = FindWindow("PP10FrameClass", 0&)
      Case "11"
      ' For 2003:
        hWnd = FindWindow("PP11FrameClass", 0&)
      Case "12"
      ' For 2007:
              hWnd = FindWindow("PP12FrameClass", 0&)
      Case "14", "15"
      ' For 2010:
              hWnd = FindWindow("PPTFrameClass", 0&)
      Case Else
        Err.Raise Number:=vbObjectError + ERR_VERSION_NOT_SUPPORTED, _
        Description:="Newer version."
        Exit Property

    End Select

    If hWnd = 0 Then
    ' window was not found...
      Err.Raise Number:=vbObjectError + ERR_NO_WINDOW_HANDLE, _
      Description:="Unable to get the PowerPoint Window handle"
      Exit Property
    End If

    'Attempt to lock the window
    If LockWindowUpdate(hWnd) = 0 Then
    ' attempt failed...
      Err.Raise Number:=vbObjectError + ERR_WINDOW_LOCK_FAIL, _
      Description:="Unable to set a  PowerPoint window lock"
      Exit Property

    End If

  Else  'State = True
    'Unlock the Window to refresh
    LockWindowUpdate (0&)
    UpdateWindow (hWnd)
    hWnd = 0
  End If

End Property

使用示例......

  Set appObject = New cScreenUpdating
  appObject.ScreenUpdating = False
  ' code here
  appObject.ScreenUpdating = True

Answer 2

我发现一个解决方法是最小化PPT窗口，然后使用EnableWindow防止用户输入它。通过VB.NET在Office 365中进行了测试

<DllImport("user32.dll")>
Private Shared Function EnableWindow(ByVal hWnd As IntPtr, ByVal bEnable As Boolean) As Boolean
End Function

Private _pptApp As PowerPoint.Application

Public Property ScreenUpdating As Boolean

    Get
        Return _pptApp.WindowState=PpWindowState.ppWindowNormal
    End Get

    Set(value As Boolean)

        If value Then
            EnableWindow(_pptApp.HWND, True)
            _pptApp.WindowState = PpWindowState.ppWindowNormal
        Else
            'need to make sure it is enabled otherwise changing the state throws an exception
            EnableWindow(_pptApp.HWND, True)
            _pptApp.WindowState = PpWindowState.ppWindowMinimized
            EnableWindow(_pptApp.HWND, False)
        End If

    End Set

End Property

关闭Powerpoint的screenupdating

2 个答案: