在双显示器系统中，找出显示PowerPoint幻灯片放映在哪个显示器上

Question

在多监视器系统上运行的Powerpoint 2007/2010中，我们可以选择要在其上显示幻灯片的监视器，方法是转到“幻灯片”->“设置幻灯片”->“在...上显示幻灯片”，然后选择所需的监视器。

是否可以以编程方式确定这些设置（例如使用VBA）？

我真正需要的是显示幻灯片的监视器的像素分辨率。我怎样才能做到这一点？

Answer 1

即使您已经接受了史蒂夫的回答。以下是一些有用的代码段。

您可以通过以下代码获得有关系统监视器的信息（在此处找到）：

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

并将结果与​​当前SlideShowWindows(1)结果进行比较。