在双显示器系统中，找出 PowerPoint 幻灯片显示在哪个显示器上

Question

在多显示器系统上运行的Powerpoint 2007/2010中，我们可以通过转到“幻灯片放映”->“幻灯片放映”来选择将在其上显示幻灯片的显示器。 “设置幻灯片”-> “显示幻灯片”并选择所需的显示器。

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

即使你已经接受了史蒂夫的回答。以下是一些有用的代码片段。

您可以使用此类代码获取有关系统监视器的信息（此处)：

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。

Answer 2

试试这个：

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

这将为您带来分数结果。
每英寸有 72 个点，因此：

ResultInPixels = (ResultInPoints * WindowsDPI) / 72

通常 WindowsDPI 为 96，但您不能依赖于此。
对 GetSystemMetrics 的 API 调用将为您提供当前值。

Answer 3

Edwin Vermeer 的代码 @JMax 非常棒。我确信我会被 mods 搞砸，但我制作了下图来准确显示代码中的 Sub test() 返回的内容。希望这能节省另一个 n00b 一两个小时。

提示：将 Dubug.Print 查找替换为 MsgBox，并使用不同的监视器安排运行几次代码，以确保您理解返回结果。

下面是一个奇怪的显示器排列赌注，它很好地展示了您将获得的不同回报：

...好吧，在我拥有 10 名声望之前它不会让我发布图片，图表在这里：

“监控”主要回报监视器

主监视器返回“工作区域”

“监视器/工作区”返回辅助监视器

（与其他 2 个在同一相册中，需要 10 声望才能发布 >2 个链接...）