有关显示分辨率的问题

gemma 2003-08-19 04:24:46
我在高分辨率的机子上编的程序到低分辨率的机子上运行的时候,界面会显示不完整;而如果在低分辨率机子上编的程序到高分辨率的机子上运行,界面会偏在一个角上,很是难看。所以想向各位大侠请教一下,在程序中加入怎样的代码可以检测到机子的分辨率,然后再使程序界面作相应的改变呢?可以作到吗?或者说怎样才能做到让程序无论在怎样的分辨率机子上运行都可以完美的显示其界面呢?先谢谢各位了
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lihonggen0 2003-08-19
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如何设定屏幕分辨率

 

  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



 


lihonggen0 2003-08-19
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'*************************************************************
'* 名称:WinMode
'* 用途:改变分辨率
'*************************************************************
Const SPI_GETWORKAREA = 48
Private Declare Function SystemParametersInfo Lib "user32" Alias "SystemParametersInfoA" (ByVal uAction As Long, ByVal uParam As Long, lpvParam As Any, ByVal fuWinIni As Long) As Long
Private Declare Function lstrcpy Lib "kernel32" Alias "lstrcpyA" (lpString1 As Any, lpString2 As Any) As Long
Const CCHDEVICENAME = 32
Const CCHFORMNAME = 32
Const DM_PELSWIDTH = &H80000
Const DM_PELSHEIGHT = &H100000
Const DM_BITSPERPEL = &H40000
'
Private Type winmode
dmDeviceName As String * CCHDEVICENAME
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 * CCHFORMNAME
dmUnusedPadding As Integer
dmBitsPerPel As Integer
dmPelsWidth As Long
dmPelsHeight As Long
dmDisplayFlags As Long
dmDisplayFrequency As Long
End Type
Private Declare Function ChangeDisplaySettings Lib "user32" Alias "ChangeDisplaySettingsA" (ByVal lpwinmode As Long, ByVal dwflags As Long) As Long

Public Function SetDisplayMode(Width As Integer, Height As Integer, Color As Integer) As Long
Dim Newwinmode As winmode
Dim p As Long
With Newwinmode
.dmSize = 122
If Color = -1 Then
.dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT
Else
.dmFields = DM_PELSWIDTH Or _
DM_PELSHEIGHT Or DM_BITSPERPEL
End If
.dmPelsWidth = Width
.dmPelsHeight = Height

If Color <> -1 Then
.dmBitsPerPel = Color
End If
End With
p = lstrcpy(Newwinmode, Newwinmode)
SetDisplayMode = ChangeDisplaySettings(p, 0)
End Function
lihonggen0 2003-08-19
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nScreenWidth = Screen.Width / 15 '屏幕宽度
nScreenHeight = Screen.Height / 15 '屏幕高度
Dim K As Integer
Dim nAnswer As Long
If nScreenWidth <> 800 And nScreenHeight <> 600 Then
nAnswer = MsgBox("警告:显示器当前分辨率为 " & Trim(str(nScreenWidth)) & "x" & _
Trim(str(nScreenHeight)) & ",为使系统正常运行" & Chr(13) & _
"请将分辨率设置为 800x600 增强色(16位)" & _
",是否继续?", vbYesNo, cProgramName)
Select Case nAnswer
Case vbYes
K = SetDisplayMode(800, 600, 16)
Case vbNo
End
End Select
End If

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