Declare Function EnumDisplaySettings Lib "user32" _Alias "EnumDisplaySettingsA" _(ByVal lpszDeviceName As Long, _ByVal iModeNum As Long, _lpDevMode As Any) As Boolean Declare Function ChangeDisplaySettingsLib "user32" _Alias "ChangeDisplaySettingsA" _(lpDevMode As Any, ByVal dwFlags As Long) As LongDeclare Function ExitWindowsEx Lib "user32" _(ByVal uFlags As Long, ByVal dwReserved As Long) As Long Public Const EWX_LOGOFF = 0Public Const EWX_SHUTDOWN = 1Public Const EWX_REBOOT = 2Public Const EWX_FORCE = 4Public Const CCDEVICENAME = 32Public Const CCFORMNAME = 32Public Const DM_BITSPERPEL = &H40000Public Const DM_PELSWIDTH = &H80000Public Const DM_PELSHEIGHT = &H100000Public Const CDS_UPDATEREGISTRY = &H1Public Const CDS_TEST = &H4Public Const DISP_CHANGE_SUCCESSFUL = 0Public Const DISP_CHANGE_RESTART = 1 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 LongEnd Type   

  Sub SetResolution(Xres As Integer, Yres As Integer, bpp Ss Integer)Dim DevM As DEVMODE''Get the info into DevMerg& = EnumDisplaySettings(0&, 0&, DevM)''We don''t change the colordepth, because a''rebot will be necessaryDevM.dmFields = DM_PELSWIDTH OrDM_PELSHEIGHT ''Or DM_BITSPERPELDevM.dmPelsWidth = Xres ''ScreenWidthDevM.dmPelsHeight = Yres ''ScreenHeight''DevM.dmBitsPerPel = bpp (could be 8, 16, 32 or even 4)''Now change the display and check if possible erg& = ChangeDisplaySettings(DevM, CDS_TEST)''Check if successfulSelect Case erg&Case DISP_CHANGE_RESTART	an = MsgBox("You''ve to reboot", vbYesNo + vbSystemModal, "Info")	If an = vbYes Then		erg& = ExitWindowsEx(EWX_REBOOT, 0&)	End If	Case DISP_CHANGE_SUCCESSFUL	erg& = ChangeDisplaySettings(DevM,	CDS_UPDATEREGISTRY)	MsgBox "Everything''s ok", vbOKOnly +	vbSystemModal, "It worked!"Case Else	MsgBox "Mode not supported", vbOKOnly +	vbSystemModal, "Error"End Select End Sub