【下载文档:  VB.NET设置屏幕分辨率、颜色位数、刷新率 实例代码.txt 】

---

VB.NET设置屏幕分辨率、颜色位数、刷新率 实例代码
复制代码 代码如下:Private Declare Function GetDeviceCaps Lib "gdi32" (ByVal hdc As Long, ByVal nIndex As Long) As LongPrivate Declare Function ChangeDisplaySettings Lib "user32" Alias "ChangeDisplaySettingsA" (lpDevMode As Any, ByVal dwflags As Long) As Long Private Const CCDEVICENAME As Long = 32Private Const CCFORMNAME As Long = 32Private Const DM_BITSPERPEL As Long = &H40000Private Const DM_PELSWIDTH As Long = &H80000Private Const DM_PELSHEIGHT As Long = &H100000Private Const DM_DISPLAYFLAGS As Long = &H200000Private Const DM_DISPLAYFREQUENCY = &H400000Private Const CDS_FORCE As Long = &H80000000Private Const BITSPIXEL As Long = 12Private Const HORZRES As Long = 8Private Const VERTRES As Long = 10Private Const VREFRESH = 116Private 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 TypePrivate Sub cmdChangeDesktopMode_Click() Dim DM As DEVMODE With DM .dmPelsWidth = CInt(txtNewWidth.Text) .dmPelsHeight = CInt(txtNewHeight.Text) .dmBitsPerPel = CInt(txtNewColor.Text) .dmDisplayFrequency = CInt(txtNewFreq.Text) .dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT Or DM_BITSPERPEL Or DM_DISPLAYFREQUENCY .dmSize = LenB(DM) End With If ChangeDisplaySettings(DM, CDS_FORCE) <> 0 Then MsgBox "错误!不支持此模式！" End IfEnd SubPrivate Sub Form_Load() txtOldWidth.Text = GetDeviceCaps(Me.hdc, HORZRES) txtOldHeight.Text = GetDeviceCaps(Me.hdc, VERTRES) txtOldColor.Text = GetDeviceCaps(Me.hdc, BITSPIXEL) txtOldFreq.Text = GetDeviceCaps(Me.hdc, VREFRESH)End Sub