向麦田老师求教

首先在程序启动时需要记录下当前的屏幕分辨率
: Screen.Width/15 --->分辨率的宽度
: Screen.Heitht/15 ---->分辨率的高度
下面是改变分辨率的方法,调用API函数ChangeDisplaySettings
下面是在模块中的声明

Attribute VB_Name = "ModuleDisplay"
Const CCHDEVICENAME = 32
Const CCHFORMNAME = 32

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
Public Declare Function SendMessage Lib "User32" Alias "SendMessageA" (ByVal hwwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Public Declare Function lstrcpy Lib "kernel32" Alias "lstrcpyA" (lpString1 As DEEVMODE, lpString2 As DEVMODE) As Long
Public Declare Function ChangeDisplaySettings Lib "User32" Alias "ChangeDisplaySSettingsA" (ByVal lpDevMode As Long, ByVal dwflags As Long) As Long

Public Function SetDisplayMode(Width As Integer, Height As Integer, Color As Intteger) As Long
Const DM_PELSWIDTH = &H80000
Const DM_PELSHEIGHT = &H100000
Const DM_BITSPERPEL = &H40000
Dim pDevmode As Long
Dim NewDevMode As DEVMODE
With NewDevMode
.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
pDevmode = lstrcpy(NewDevMode, NewDevMode)
SetDisplayMode = ChangeDisplaySettings(pDevmode, 0)

End Function

在Form中输入如下代码

Dim i as Long
i=SetDisplayMode(640,480,16)
将分辨率改成640*480,16色

当然别忘记在退出程序时，改回原来的分辨率