1. Как программно изменить частоту обновления изображения монитора (например, на 100Hz)?
2. Как програмно отформатировать диск?
Declare Function EnumDisplaySettings Lib "user32" Alias _
"EnumDisplaySettingsA" (ByVal lpszDeviceName As Long, _
ByVal iModeNum As Long, _
lptypDevMode As Any) As Boolean
Declare Function ChangeDisplaySettings Lib "user32" Alias _
"ChangeDisplaySettingsA" (lptypDevMode As Any, _
ByVal dwFlags As Long) As Long
Public Const EWX_LOGOFF = 0
Public Const EWX_SHUTDOWN = 1
Public Const EWX_REBOOT = 2
Public Const EWX_FORCE = 4
Public Const CCDEVICENAME = 32
Public Const CCFORMNAME = 32
Public Const DM_BITSPERPEL = &H40000
Public Const DM_PELSWIDTH = &H80000
Public Const DM_PELSHEIGHT = &H100000
Public Const CDS_UPDATEREGISTRY = &H1
Public Const CDS_TEST = &H4
Public Const DISP_CHANGE_SUCCESSFUL = 0
Public Const DISP_CHANGE_RESTART = 1
Public Const DM_DISPLAYFREQUENCY = &H400000
Public Const ENUM_CURRENT_SETTINGS = -1
Public Type typDevMODE
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
Public Sub SetResolution(ByVal w, ByVal h, ByVal OldFreq)
On Error Resume Next
Dim typDevM As typDevMODE
Dim lngResult As Long
Dim intAns As Integer
'
lngResult = EnumDisplaySettings(0, 0, typDevM)
'
With typDevM
.dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT Or DM_DISPLAYFREQUENCY
.dmPelsWidth = w
.dmPelsHeight = h
.dmDisplayFrequency = OldFreq
End With
DoEvents
lngResult = ChangeDisplaySettings(typDevM, 0)
DoEvents
End Sub
Sub main()
Dim X, Y, OldX, OldY As Long
Dim typDevM As typDevMODE
Dim OldFreq As Long
EnumDisplaySettings 0, ENUM_CURRENT_SETTINGS, typDevM '
OldX = typDevM.dmPelsWidth
OldY = typDevM.dmPelsHeight
OldFreq = typDevM.dmDisplayFrequency
SetResolution 640, 480, OldFreq
'Если нужно поменять только частоту обновления,то заместо 640, 480 ставишь OldX, OldY, а заместо OldFreq нужную частоту.
Form1.Show
End Sub
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