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کنید Past  اول یک ماژول به فرم خود اضافه کنید بعد این کد را در ماژول خود  

کد ماژول:

Declare Function EnumDisplaySettings Lib "user32" _

Alias "EnumDisplaySettingsA" _

(ByVal lpszDeviceName As Long, _

ByVal iModeNum As Long, _

lpDevMode As Any) As Boolean

Declare Function ChangeDisplaySettings Lib "user32" _

Alias "ChangeDisplaySettingsA" _

(lpDevMode As Any, ByVal dwFlags As Long) As Long

Declare Function ExitWindowsEx Lib "user32" _

(ByVal uFlags As Long, ByVal dwReserved 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

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

بعد از کپی کردن کد ماژول این کد را به فرم خود اضافه کنید

' change the resolutoin By : VB1365 @ Yahoo.com

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Private Sub Command1_Click()

    Dim DevM As DEVMODE

    'Get the info into DevM

    erg& = EnumDisplaySettings(0&, 0&, DevM)

    'We don't change the colordepth, because a

    'rebot will be necessary

    DevM.dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT 'Or DM_BITSPERPEL

    Select Case ComRes.ListIndex

        Case 0

            DevM.dmPelsWidth = 640 'ScreenWidth

            DevM.dmPelsHeight = 480 'ScreenHeight

        Case 1

            DevM.dmPelsWidth = 800 'ScreenWidth

            DevM.dmPelsHeight = 600 'ScreenHeight

        Case 2

            DevM.dmPelsWidth = 1024 'ScreenWidth

            DevM.dmPelsHeight = 768 'ScreenHeight

    End Select

    DevM.dmBitsPerPel = 32 '(could be 8, 16, 32 or even 4)

'    DevM.dmColor = 1

    'Now change the display and check if possible

    erg& = ChangeDisplaySettings(DevM, CDS_TEST)

    'Check if succesfull

    Select 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

Private Sub Form_Load()

    ComRes.AddItem " 640 * 480 "

    ComRes.AddItem " 800 * 600 "

    ComRes.AddItem "1024 * 768 "

End Sub

  command1به نام comman button  این پروژه به یک  

اظافه کنید comboبه نام یک   combox ویک

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