在双显示器系统中，如何确定 PowerPoint 幻灯片正在哪个显示器上显示

Question

在多显示器系统上运行的Powerpoint 2007/2010中，我们可以通过“幻灯片放映”->“设置幻灯片放映”->“在哪个显示器上显示幻灯片放映”并选择所需显示器来选择幻灯片放映将显示的显示器。

是否可以通过编程方式确定这些设置（例如使用VBA）？

我实际需要的是幻灯片放映显示的显示器的像素分辨率。怎么做呢？

- Arie Livshin

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你尝试过录制宏并查看生成的代码吗？ - Jean-François Corbett

在PPT 2007/2010中不再有宏录制器。 - Steve Rindsberg

Answer 1

即使您已经接受了Steve的答案，以下是一些有用的代码片段。

您可以使用以下代码获取有关系统监视器的信息（在此处找到：here）：

Attribute VB_Name = "MonitorInfo"
Option Explicit

Public Declare Function LoadLibraryEx Lib "kernel32.dll" Alias "LoadLibraryExA" (ByVal lpFileName As String, ByVal hFile As Long, ByVal dwFlags As Long) As Long
Public Declare Function GetProcAddress Lib "kernel32.dll" (ByVal hModule As Long, ByVal lpProcName As String) As Long
Public Declare Function GetModuleHandle Lib "kernel32.dll" Alias "GetModuleHandleA" (ByVal lpModuleName As String) As Long
Public Declare Function FreeLibrary Lib "kernel32.dll" (ByVal hLibModule As Long) As Boolean
Public Declare Function EnumDisplayMonitors Lib "user32.dll" (ByVal hdc As Long, ByRef lprcClip As Any, ByVal lpfnEnum As Long, ByVal dwData As Long) As Boolean
Public Declare Function GetMonitorInfo Lib "user32.dll" Alias "GetMonitorInfoA" (ByVal hMonitor As Long, ByRef lpmi As MONITORINFOEX) As Boolean

Public Const CCHDEVICENAME = 32
Public Const MONITORINFOF_PRIMARY = &H1

Public Type RECT
    Left As Long
    Top As Long
    Right As Long
    Bottom As Long
End Type

Public Type MONITORINFOEX
    cbSize As Long
    rcMonitor As RECT
    rcWork As RECT
    dwFlags As Long
    szDevice As String * CCHDEVICENAME
End Type

Dim MonitorId() As String

Public Sub Test()
Dim i As Integer
    Debug.Print "Number of monitors in this system : " & GetMonitorId
    Debug.Print
    For i = 1 To UBound(MonitorId)
        PrintMonitorInfo (MonitorId(i))
    Next i
End Sub

Public Function GetMonitorId()
    ReDim MonitorId(0)
    ' Of course dual screen systems are not available on all Win versions.
    If FunctionExist("user32.dll", "EnumDisplayMonitors") = True Then
        If EnumDisplayMonitors(&H0, ByVal &H0, AddressOf MonitorEnumProc, &H0) = False Then
            Failed "EnumDisplayMonitors"
        End If
    End If
    GetMonitorId = UBound(MonitorId)
End Function


Private Sub PrintMonitorInfo(ForMonitorID As String)
Dim MONITORINFOEX As MONITORINFOEX
    MONITORINFOEX.cbSize = Len(MONITORINFOEX)
    If GetMonitorInfo(CLng(ForMonitorID), MONITORINFOEX) = False Then Failed "GetMonitorInfo"
    With MONITORINFOEX
        Debug.Print "Monitor info for device number : " & ForMonitorID
        Debug.Print "---------------------------------------------------"
        Debug.Print "Device Name : " & .szDevice
        If .dwFlags And MONITORINFOF_PRIMARY Then Debug.Print "Primary Display = True" Else Debug.Print "Primary Display = False"
        With .rcMonitor
            Debug.Print "Monitor Left : " & .Left
            Debug.Print "Monitor Top : " & .Top
            Debug.Print "Monitor Right : " & .Right
            Debug.Print "Monitor Bottom : " & .Bottom
        End With
        With .rcWork
            Debug.Print "Work area Left : " & .Left
            Debug.Print "Work area Top : " & .Top
            Debug.Print "Work area Right : " & .Right
            Debug.Print "Work area Bottom : " & .Bottom
        End With
    End With
    Debug.Print
    Debug.Print
End Sub


Public Function FunctionExist(ByVal strModule As String, ByVal strFunction As String) As Boolean
Dim hHandle As Long
    hHandle = GetModuleHandle(strModule)
    If hHandle = &H0 Then
        Failed "GetModuleHandle"
        hHandle = LoadLibraryEx(strModule, &H0, &H0): If hHandle = &H0 Then Failed "LoadLibrary"
        If GetProcAddress(hHandle, strFunction) = &H0 Then
            Failed "GetProcAddress"
        Else
            FunctionExist = True
        End If
        If FreeLibrary(hHandle) = False Then Failed "FreeLibrary"
    Else
        If GetProcAddress(hHandle, strFunction) = &H0 Then
            Failed "GetProcAddress"
        Else
            FunctionExist = True
        End If
    End If
End Function


Public Sub Failed(ByVal strFunction As String)
    If errMsg = True Then
        If Err.LastDllError = 0 Then
            MessageBoxEx &H0, strFunction & Chr$(13) & Chr$(10) & Chr$(13) & Chr$(10) & "Failed", "Error", MB_OK Or MB_ICONWARNING Or MB_SETFOREGROUND, 0
        Else
            Errors Err.LastDllError, strFunction
        End If
    End If
End Sub


Public Function MonitorEnumProc(ByVal hMonitor As Long, ByVal hdcMonitor As Long, ByRef lprcMonitor As RECT, ByVal dwData As Long) As Boolean
Dim ub As Integer
    ub = 0
    On Error Resume Next
    ub = UBound(MonitorId)
    On Error GoTo 0
    ReDim Preserve MonitorId(ub + 1)
    MonitorId(UBound(MonitorId)) = CStr(hMonitor)
    MonitorEnumProc = 1
End Function

请将结果与当前的SlideShowWindows(1)结果进行比较。

- JMax

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空白--填得漂亮。谢谢！ - Steve Rindsberg

Answer 2

试试这个：

With SlideShowWindows(1)
Debug.Print .Height
Debug.Print .Width
End With

这将为您提供点数结果。

每英寸有72个点，因此：

像素结果 = （点数结果 * WindowsDPI）/ 72

通常WindowsDPI为96，但您不能依赖于此。 使用GetSystemMetrics API调用可获取当前值。

- Steve Rindsberg

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我该如何编程选择在显示器上展示幻灯片？ - Khan Engineer

Answer 3

Edwin Vermeer的代码@JMax非常棒。我肯定会被管理员狠狠地打击，但我制作了下面的图表，以显示代码中的Sub test()返回内容。希望这可以为另一个初学者节省一两个小时。

提示：用MsgBox查找替换Dubug.Print，并通过不同的监视器设置运行几次代码，以确保您理解返回值。

以下是一个奇怪的监视器布置，但它很好地演示了不同的返回值：

...嗯，它不让我发布图片，因为我还没有10点声望，如需图表，请点击这里：

主监视器的“监视器”返回值

主监视器的“工作区”返回值

“监视器/工作区”返回值适用于辅助监视器。

（和另外两个在同一相册中，需要10个声望才能发布超过2个链接...）

- dcmorse