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原则上，只改这一次，下一次开机会还原，但如果需重开机，才会Update Registry中的设定，并重开机。 如果要永久设定其设定值，请将 b = ChangeDisplaySettings(DevM, 0) 改成 b = ChangeDisplaySettings(DevM, CDS_UPDATEREGISTRY) Option Explicit Private Declare Function EnumDisplaySettings Lib "user32" Alias _ "EnumDisplaySettingsA" (ByVal lpszDeviceName As Long, _ ByVal iModeNum As Long, lpDevMode As Any) As Long Private Declare Function ChangeDisplaySettings Lib "user32" Alias _ "ChangeDisplaySettingsA" (lpDevMode As Any, ByVal dwflags As Long) As Long Private Declare Function ExitWindowsEx Lib "user32" (ByVal uFlags As Long, _ ByVal dwReserved As Long) As Long Const EWX_REBOOT = 2 ' 重开机 Const CCDEVICENAME = 32 Const CCFORMNAME = 32 Const DM_PELSWIDTH = &H80000 Const DM_PELSHEIGHT = &H100000 Const DISP_CHANGE_SUCCESSFUL = 0 Const DISP_CHANGE_RESTART = 1 Const CDS_UPDATEREGISTRY = 1 Private Type DEVMODE dmDeviceName As String * CCDEVICENAME dmSpecVersion As Integer dmDriverVersion As Integer dmSize As Integer dmDriverExtra As Integer dmFields As Long dmOrientation As Integer dmPaperSize As Integer dmPaperLength As Integer dmPaperWidth As Integer dmScale As Integer dmCopies As Integer dmDefaultSource As Integer dmPrintQuality As Integer dmColor As Integer dmDuplex As Integer dmYResolution As Integer dmTTOption As Integer dmCollate As Integer dmFormName As String * CCFORMNAME dmUnusedPadding As Integer dmBitsPerPel As Integer dmPelsWidth As Long dmPelsHeight As Long dmDisplayFlags As Long dmDisplayFrequency As Long End Type Private DevM As DEVMODE Private Sub Command1_Click() Dim i As Long Dim b As Long Dim ans as Long Dim a As Long a = EnumDisplaySettings(0, 0, DevM) 'Initial Setting DevM.dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT DevM.dmPelsWidth = 800 '设定成想要的分辨率 DevM.dmPelsHeight = 600 b = ChangeDisplaySettings(DevM, 0) 'Changed Only this time If b = DISP_CHANGE_RESTART Then ans = MsgBox("要重开机设定才能完成，重开？", vbOKCancel) If ans = 1 Then b = ChangeDisplaySettings(DevM, CDS_UPDATEREGISTRY) 'after this , Will Update in Registry Call ExitWindowsEx(EWX_REBOOT, 0) End If Else If b <> DISP_CHANGE_SUCCESSFUL Then Call MsgBox("设定有误", vbCritical) End If End If End Sub | 