【CSDN】【请问如何在自己软件启动时把分辩率设置为1024*768】

[drillmaster3]

[rainstormmaster]

这样的帖子很多，要学会搜索

[wingchi]

Option Explicit

Private Const CCDEVICENAME = 32
Private Const CCFORMNAME = 32
Private Const DM_PELSWIDTH = &H80000
Private Const DM_PELSHEIGHT = &H100000

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 Declare Function apiEnumDisplaySettings Lib "user32" _
Alias "EnumDisplaySettingsA" _
(ByVal lpszDeviceName As Long, _
ByVal iModeNum As Long, _
lpDevMode As Any) _
As Boolean

Private Declare Function apiChangeDisplaySettings Lib "user32" _
Alias "ChangeDisplaySettingsA" _
(lpDevMode As Any, _
ByVal dwflags As Long) _
As Long


Function fChangeRes(intX As Integer, intY As Integer) As Boolean
Dim tDevMode As DEVMODE
Dim boolCanChange As Boolean
Dim boolRet As Boolean
Dim lngRet As Long, lngMode As Long

On Error GoTo Err_Handler
Do
boolRet = apiEnumDisplaySettings(0&, lngMode&, tDevMode)
With tDevMode
If .dmPelsWidth = intX And .dmPelsHeight = intY Then
boolCanChange = True
End If
End With
lngMode = lngMode + 1
Loop Until boolRet = False

If boolCanChange Then
With tDevMode
.dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT
.dmPelsWidth = intX
.dmPelsHeight = intY
End With
lngRet = apiChangeDisplaySettings(tDevMode, 0&)
End If
fChangeRes = boolCanChange
exit_Handler:
Exit Function
Err_Handler:
fChangeRes = False
Resume exit_Handler
End Function

Private Sub Command1_Click()
fChangeRes 800, 600
End Sub

[wingchi]

'Change Resolution
Option Explicit
Const WM_DISPLAYCHANGE = &H7E
Const HWND_BROADCAST = &HFFFF&
Const EWX_LOGOFF = 0
Const EWX_SHUTDOWN = 1
Const EWX_REBOOT = 2
Const EWX_FORCE = 4
Const CCDEVICENAME = 32
Const CCFORMNAME = 32
Const DM_BITSPERPEL = &H40000
Const DM_PELSWIDTH = &H80000
Const DM_PELSHEIGHT = &H100000
Const CDS_UPDATEREGISTRY = &H1
Const CDS_TEST = &H4
Const DISP_CHANGE_SUCCESSFUL = 0
Const DISP_CHANGE_RESTART = 1
Const BITSPIXEL = 12
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 Declare Function EnumDisplaySettings Lib "user32" Alias "EnumDisplaySettingsA" (ByVal lpszDeviceName As Long, ByVal iModeNum As Long, lpDevMode As Any) As Boolean
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
Private Declare Function GetDeviceCaps Lib "gdi32" (ByVal hdc As Long, ByVal nIndex As Long) As Long
Private Declare Function CreateDC Lib "gdi32" Alias "CreateDCA" (ByVal lpDriverName As String, ByVal lpDeviceName As String, ByVal lpOutput As String, ByVal lpInitData As Any) As Long
Private Declare Function DeleteDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Dim OldX As Long, OldY As Long, nDC As Long
Sub ChangeRes(X As Long, Y As Long, Bits As Long)
Dim DevM As DEVMODE, ScInfo As Long, erg As Long, an As VbMsgBoxResult
'Get the info into DevM
erg = EnumDisplaySettings(0&, 0&, DevM)
'This is what we're going to change
DevM.dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT Or DM_BITSPERPEL
DevM.dmPelsWidth = X 'ScreenWidth
DevM.dmPelsHeight = Y 'ScreenHeight
DevM.dmBitsPerPel = Bits '(can be 8, 16, 24, 32 or even 4)
'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)
ScInfo = Y * 2 ^ 16 + X
'Notify all the windows of the screen resolution change
SendMessage HWND_BROADCAST, WM_DISPLAYCHANGE, ByVal Bits, ByVal ScInfo
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()
'KPD-Team 1999
'URL: http://www.allapi.net/
'E-Mail: [e-mail]
Dim nDC As Long
'retrieve the screen's resolution
OldX = Screen.Width / Screen.TwipsPerPixelX
OldY = Screen.Height / Screen.TwipsPerPixelY
'Create a device context, compatible with the screen
nDC = CreateDC("DISPLAY", vbNullString, vbNullString, ByVal 0&)
'Change the screen's resolution
ChangeRes 640, 480, GetDeviceCaps(nDC, BITSPIXEL)
End Sub
Private Sub Form_Unload(Cancel As Integer)
'restore the screen resolution
ChangeRes OldX, OldY, GetDeviceCaps(nDC, BITSPIXEL)
'delete our device context
DeleteDC nDC
End Sub

[wingchi]

'//第2个示例
改变屏幕分辨率
Private Declare Function lstrcpy Lib "kernel32" Alias "lstrcpyA" (lpString1 As Any, lpString2 As Any) As Long
Private Const CCHDEVICENAME = 32
Private Const CCHFORMNAME = 32
Private Const ENUM_CURRENT_SETTINGS = 1
Private Type DEVMODE
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 Long
dmPelsWidth As Long
dmPelsHeight As Long
dmDisplayFlags As Long
dmDisplayFrequency As Long
End Type

Private Declare Function ChangeDisplaySettings Lib "user32" Alias "ChangeDisplaySettingsA" (ByVal lpDevMode As Long, ByVal dwflags As Long) As Long
Private Declare Function EnumDisplaySettings Lib "user32" Alias "EnumDisplaySettingsA" (ByVal lpszDeviceName As String, ByVal iModeNum As Long, lpDevMode As Any) As Long
Private Declare Function GetSystemMetrics Lib "user32" (ByVal nIndex As Long) As Long

Private Const SM_CXSCREEN = 0
Private Const SM_CYSCREEN = 1

Dim pNewMode As DEVMODE
Dim pOldMode As Long
Dim nOrgWidth As Integer, nOrgHeight As Integer

'设置显示器分辨率的执行函数
Private Function SetDisplayMode(Width As Integer, Height As Integer, Color As Integer) As Long ', Freq As Long) As Long
On Error GoTo ErrorHandler
Const DM_PELSWIDTH = &H80000
Const DM_PELSHEIGHT = &H100000
Const DM_BITSPERPEL = &H40000
Const DM_DISPLAYFLAGS = &H200000
Const DM_DISPLAYFREQUENCY = &H400000
With pNewMode
.dmSize = Len(pNewMode)
If Color = 0 Then 'Color = 0 时不更改屏幕颜色
.dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT
Else
.dmFields = DM_BITSPERPEL Or DM_PELSWIDTH Or DM_PELSHEIGHT 'Or DM_DISPLAYFREQUENCY'属性率的更改还是没办法,不过,不加入此DM_DISPLAYFREQUENCY这个参数,只要系统支持,应该不会更改刷新率的
End If
.dmPelsWidth = Width
.dmPelsHeight = Height
If Color <> 0 Then
.dmBitsPerPel = Color
End If
End With
pOldMode = lstrcpy(pNewMode, pNewMode)
SetDisplayMode = ChangeDisplaySettings(pOldMode, 1)
Exit Function
ErrorHandler:
MsgBox Err.Description, vbCritical, "VB广场"
End Function

Private Sub Command1_Click()
Dim nWidth As Integer, nHeight As Integer, nColor As Integer
Select Case Combo1.ListIndex
Case 0
nWidth = 640: nHeight = 480: nColor = 16 '640*480*16位真彩色,256色nColor = 8,16色nColor = 4,nColor = 0 表示不改变颜色
Case 1
nWidth = 640: nHeight = 480: nColor = 24
Case 2
nWidth = 640: nHeight = 480: nColor = 32
Case 3
nWidth = 800: nHeight = 600: nColor = 16
Case 4
nWidth = 800: nHeight = 600: nColor = 24
Case 5
nWidth = 800: nHeight = 600: nColor = 32
Case 6
nWidth = 1024: nHeight = 768: nColor = 16
Case 7
nWidth = 1024: nHeight = 768: nColor = 24
Case 8
nWidth = 1024: nHeight = 768: nColor = 32
Case other
nWidth = 800: nHeight = 600: nColor = 16
End Select
Call SetDisplayMode(nWidth, nHeight, nColor) '注意,系统不支持的显示模式不能选,否则,准备用安全模式重启动吧.API函数EnumDisplaySettings可以选择系统支持的模式,自己去写吧,也很简单.
End Sub

Private Sub Form_Load()
Combo1.AddItem "640*480*16位真彩色"
Combo1.AddItem "640*480*24位真彩色"
Combo1.AddItem "640*480*32位真彩色"
Combo1.AddItem "800*600*16位真彩色"
Combo1.AddItem "800*600*24位真彩色"
Combo1.AddItem "800*600*32位真彩色"
Combo1.AddItem "1024*768*16位真彩色"
Combo1.AddItem "1024*768*24位真彩色"
Combo1.AddItem "1024*768*32位真彩色"
Combo1.Text = Combo1.List(0)
nOrgWidth = GetDisplayWidth
nOrgHeight = GetDisplayHeight
'nOrgWidth = GetSystemMetrics(SM_CXSCREEN)'两种获取初始屏幕大小的方法均可
'nOrgHeight = GetSystemMetrics(SM_CYSCREEN)
End Sub

Private Function GetDisplayWidth() As Integer
GetDisplayWidth = Screen.Width \ Screen.TwipsPerPixelX
End Function

Private Function GetDisplayHeight() As Integer
GetDisplayHeight = Screen.Height \ Screen.TwipsPerPixelY
End Function

Private Sub RestoreDisplayMode()
Call SetDisplayMode(nOrgWidth, nOrgHeight, 0)
End Sub

Private Sub Form_Unload(Cancel As Integer)
RestoreDisplayMode
End Sub