Solved

Change Screen Resolution and Refresh rate

Posted on 2007-11-17
3
495 Views
Last Modified: 2012-05-05
Hi everyone , what is the simplest code for reetrive and change the screen resolution and screen refresh rate , Thanx a lot
0
Comment
Question by:ashraf_t
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 14

Expert Comment

by:Matti
ID: 20303924
Hi!

Try this.
I'm not sure do the frequency change work in every case, also there might be improper values to the display so be careful whit that.

Matti
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
    Const CCDEVICENAME = 32
    Const CCFORMNAME = 32
    Const DM_PELSWIDTH = &H80000
    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
 
Sub ChangeRes(iWidth As Single, iHeight As Single, frequency As Long)
    Dim DevM As DEVMODE
    Dim a As Boolean
    Dim i&
    i = 0
    Do
        a = EnumDisplaySettings(0&, i&, DevM)
        i = i + 1
    Loop Until (a = False)
    Dim b&
    DevM.dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT
    DevM.dmPelsWidth = iWidth
    DevM.dmPelsHeight = iHeight
    DevM.dmDisplayFrequency = frequency
    b = ChangeDisplaySettings(DevM, 0)
End Sub
 'make the cal from this button
Private Sub Command1_Click()
Call ChangeRes(1280, 1024, 70)
End Sub

Open in new window

0
 
LVL 12

Accepted Solution

by:
Mortaza Doulaty earned 100 total points
ID: 20306898
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Have you ever wanted to restrict the users input in a textbox to numbers, and while doing that make sure that they can't 'cheat' by pasting in non-numeric text? Of course you can do that with code you write yourself but it's tedious and error-prone …
Most everyone who has done any programming in VB6 knows that you can do something in code like Debug.Print MyVar and that when the program runs from the IDE, the value of MyVar will be displayed in the Immediate Window. Less well known is Debug.Asse…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question