How to make a Resolution Independent Application?
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Thread: How to make a Resolution Independent Application?

  1. #1
    Join Date
    Dec 2009
    Posts
    6

    How to make a Resolution Independent Application?

    The development machine's and client machine's screen resolution are very likely to vary. I want a code that will RE-SIZE and RE-POSITION each and every control so that no matter what the development machine's resolution is, the application will look exactly the same on the client machine irrespective of its screen resolution.

    These two links are as close as I get to the answer, but they are not very clear.

    (1) http://vbcity.com/forums/p/68832/276540.aspx#276540

    (2) http://vbcity.com/forums/p/88845/371135.aspx#371135



    I would be grateful if someone would clarify this for me.

    P.S. I don't know if its okay to post links of a different forum... Im a noob so please overlook it as it wont happen again if its forbidden.

  2. #2
    Join Date
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    Re: How to make a Resolution Independent Application?

    If you DOCK controls, then they resize with the form
    David

    CodeGuru Article: Bound Controls are Evil-VB6
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  3. #3
    Join Date
    Jun 2004
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    Re: How to make a Resolution Independent Application?

    Docking, doesn't work exactly for many forms. It's somewhat useful though.

    The TableLayoutPanel control, and FlowLayoutPanel control, can help resize the controls automatically when the form is resized, but they've had a few nasty bugs in VB2005, so back up all your work first. I don't think they fixed the bugs.

    The second link looked pretty good, for resizing controls too.
    I usually loop through the controls like this, and customize the size and position to avoid the LayoutPanel bugs.

    To resize the main form, there are a few ways to do it.
    Here is a simple threaded way.
    Code:
    Private kRes As New Threading.Thread(AddressOf KeepResolution)
    Dim perX, perY As Double, prvheight, prvWidth As Int32
    
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
           kRes.Start()
    End Sub
    
    Private Sub Form1_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosedEventArgs) Handles Me.FormClosed
          kRes.Abort()
    End Sub
    
        Private Sub KeepResolution()
            On Error Resume Next
            Dim desktopSize As Size = Windows.Forms.SystemInformation.PrimaryMonitorSize
            prvheight = desktopSize.Height
            prvWidth = desktopSize.Width
            perX = Me.Width / prvWidth
            perY = Me.Height / prvheight
            Do
                desktopSize = Windows.Forms.SystemInformation.PrimaryMonitorSize
                If desktopSize.Height <> prvheight OrElse desktopSize.Width <> prvWidth Then
                    prvheight = desktopSize.Height
                    prvWidth = desktopSize.Width
                    Me.Width = CInt(prvWidth * perX)
                    Me.Height = CInt(prvheight * perY)
                End If
                Threading.Thread.Sleep(1000)
            Loop
        End Sub

  4. #4
    Join Date
    Oct 2011
    Posts
    1

    Re: How to make a Resolution Independent Application?

    Getting a resolution independent code bothered me for a long time. I purchased two different commercial products, but they did not work with Windows 7.

    I finally figured it out for myself and thought that I would post it here for others. This is for Windows Forms.

    If you are Maximizing your screen try this then set your form’s WindowState to Minimized in design. The reason is that when the controls are resized, the screen will ‘flicker’ if it is visible. I tried setting the forms .visible = false, but this didn’t work in Windows 7 when I tried to make it visible again (froze up – not sure why).

    If you are not maximizing, then there is two lines of code at the end here that will adjust for this – it is marked




    Private Sub form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    Call SetResolution()

    End sub




    Private Sub form1_Shown(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Shown
    ‘ set the windowstate to Maximized

    Me.WindowState = FormWindowState.Maximized
    ‘if you are not maximizing your screen and are using ‘normal’ for you ‘windowstate, you can 'ignor this section
    End sub





    Private Sub SetResolution()
    ‘ set resolution sub checks all the controls on the screen. Containers (tabcontrol, panel, ‘groupbox, tablelayoutpanel) do not resize on general control search for the form – so ‘they have to be done separate by name

    Dim perX, perY As Double, prvheight, prvWidth As Int32
    Dim shoAdd As Short

    Dim desktopSize As Size = Windows.Forms.SystemInformation.PrimaryMonitorSize
    prvheight = desktopSize.Height
    prvWidth = desktopSize.Width

    ‘ in Windows 7, in the display section of the control panel, a user can ‘be set to see their screen larger – the settings are 100%, 125%, and ‘150%. In my programs preferences, I allow my software user to select ‘if they are using the 125% or the 150% settings. I set the global ‘p_shoWhatSize (short) varible to 1 for 125% and 2 for 150% screen. ‘This section ajusts for this

    If p_shoWhatSize = 1 Then
    prvheight = prvheight * 0.8
    prvWidth = prvWidth * 0.8
    End If
    If p_shoWhatSize = 2 Then
    prvheight = prvheight * 0.6666
    prvWidth = prvWidth * 0.6666
    End If

    ‘ the development resolution for my project is 1024 x 768 – change this ‘to your development resolution
    ' get new 'ratio' for screen
    perX = prvWidth / 1024
    perY = prvheight / 768

    ‘ listboxes don’t resize vertically correctly for all resolutions due ‘to the font size. shoAdd is used to ‘tweek’ the size of the list ‘boxes to help adjust for this – requires some testing on your screens ‘in different resolutions. I have some set at 10 and some as high as ‘14.
    If prvheight > 768 Then shoAdd = Int((prvheight - 768) / 12)

    Dim shoFont As Short

    ' if res is 1024 x 768 then perX and PerY will equal 1
    If perX <> 1 Or perY <> 1 Then
    For Each ctl As Control In Me.Controls

    ‘ if you change the fonts of panels or groupbox containers, it messes
    ‘ with the controls in those containers. Therefore, I skip the font
    ‘ resize for these
    If UCase(ctl.GetType.ToString) <> "SYSTEM.WINDOWS.FORMS.PANEL" _
    And UCase(ctl.GetType.ToString) <> "SYSTEM.WINDOWS.FORMS.GROUPBOX" Then
    shoFont = ctl.Font.Size * perY
    ctl.Font = New Font(ctl.Font.FontFamily, shoFont, ctl.Font.Style)
    End If

    'get new location
    ctl.Location = New Point(ctl.Location.X * perX, ctl.Location.Y * perY)

    If UCase(ctl.GetType.ToString) = "SYSTEM.WINDOWS.FORMS.LISTBOX" Then
    ctl.Height = ctl.Size.Height * perY + shoAdd
    ctl.Width = ctl.Size.Width * perX
    Else
    ' get new height & width
    ctl.Height = ctl.Size.Height * perY
    ctl.Width = ctl.Size.Width * perX
    End If

    Application.DoEvents()
    Next ctl

    ‘ do tabcontrols separate by name – a separate for/next loop per ‘control
    For Each tp As TabPage In Me.tabcontrol1.TabPages
    For Each ctl As Control In tp.Controls
    If UCase(ctl.GetType.ToString) <> "SYSTEM.WINDOWS.FORMS.PANEL" _
    And UCase(ctl.GetType.ToString) <> "SYSTEM.WINDOWS.FORMS.GROUPBOX" Then
    shoFont = ctl.Font.Size * perY
    ctl.Font = New Font(ctl.Font.FontFamily, shoFont, ctl.Font.Style)
    End If

    'get new location
    ctl.Location = New Point(ctl.Location.X * perX, ctl.Location.Y * perY)

    If UCase(ctl.GetType.ToString) = "SYSTEM.WINDOWS.FORMS.LISTBOX" Then
    ctl.Height = ctl.Size.Height * perY + shoAdd
    ctl.Width = ctl.Size.Width * perX
    Else
    ' get new height & width
    ctl.Height = ctl.Size.Height * perY
    ctl.Width = ctl.Size.Width * perX
    End If

    Application.DoEvents()
    Next
    Next


    ‘ do groupboxs separate also – separate for/next for each control by ‘name

    For Each ctl As Control In GroupBox1.Controls
    If UCase(ctl.GetType.ToString) <> "SYSTEM.WINDOWS.FORMS.PANEL" _
    And UCase(ctl.GetType.ToString) <> "SYSTEM.WINDOWS.FORMS.GROUPBOX" Then
    shoFont = ctl.Font.Size * perY
    ctl.Font = New Font(ctl.Font.FontFamily, shoFont, ctl.Font.Style)
    End If

    'get new location
    ctl.Location = New Point(ctl.Location.X * perX, ctl.Location.Y * perY)

    If UCase(ctl.GetType.ToString) = "SYSTEM.WINDOWS.FORMS.LISTBOX" Then
    ctl.Height = ctl.Size.Height * perY + shoAdd
    ctl.Width = ctl.Size.Width * perX
    Else
    ' get new height & width
    ctl.Height = ctl.Size.Height * perY
    ctl.Width = ctl.Size.Width * perX
    End If

    Application.DoEvents()
    Next

    ‘ do panels separate also – separate for/next for each ‘panel by name



    For Each ctl As Control In Panel1.Controls
    If UCase(ctl.GetType.ToString) <> "SYSTEM.WINDOWS.FORMS.PANEL" _
    And UCase(ctl.GetType.ToString) <> "SYSTEM.WINDOWS.FORMS.GROUPBOX" Then
    shoFont = ctl.Font.Size * perY
    ctl.Font = New Font(ctl.Font.FontFamily, shoFont, ctl.Font.Style)
    End If

    'get new location
    ctl.Location = New Point(ctl.Location.X * perX, ctl.Location.Y * perY)

    If UCase(ctl.GetType.ToString) = "SYSTEM.WINDOWS.FORMS.LISTBOX" Then
    ctl.Height = ctl.Size.Height * perY + shoAdd
    ctl.Width = ctl.Size.Width * perX
    Else
    ' get new height & width
    ctl.Height = ctl.Size.Height * perY
    ctl.Width = ctl.Size.Width * perX
    End If

    Application.DoEvents()
    Next

    ‘ if you are not maximizing your screen afterwards, then include this code
    Me.Top = (prvheight / 2) - (Me.Height / 2)
    Me.Left = (prvWidth / 2) - (Me.Width / 2)

    End sub

  5. #5
    Join Date
    Jan 2006
    Location
    Chicago, IL
    Posts
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    Re: How to make a Resolution Independent Application?

    Please read the rules.

    Don't resurrect 2 year old posts that have been answered.
    Use CODE TAGS when posting.
    Code:
    ' like THIS
    and, welcome to the forums!
    David

    CodeGuru Article: Bound Controls are Evil-VB6
    2013 Samples: MS CODE Samples

    CodeGuru Reviewer
    2006 Dell CSP
    2006, 2007 & 2008 MVP Visual Basic
    If your question has been answered satisfactorily, and it has been helpful, then, please, Rate this Post!

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