Maintain Aspect in Different Screen Resolutions

I use the following code in some of my app :

' #VBIDEUtils#************************************************************
' * Programmer Name  : Mikhail Shmukler
' * Web Site         : www.geocities.com/ResearchTriangle/6311/
' * E-Mail           : waty.thierry@usa.net
' * Date             : 13/10/98
' * Time             : 10:24
' * Module Name      : class_Elastic
' * Module Filename  : Elastic.cls
' **********************************************************************
' * Comments         :
' * This class can change size and location of controls On your form
' * 1. Resize form
' * 2. Change screen resolution
' * Assumes:1. Add Elastic.cls
' *         2. Add declaration 'Private El as New class_Elastic'
' *         3. Insert string like 'El.init Me' (formload event)
' *         4. Insert string like 'El.FormResize Me' (Resize event)
' *         5. Press 'F5' and resize form ....
'
'****************************************************************

Option Explicit
Private nFormHeight      As Integer
Private nFormWidth       As Integer
Private nNumOfControls   As Integer
Private nTop()           As Integer
Private nLeft()          As Integer
Private nHeight()        As Integer
Private nWidth()         As Integer
Private nFontSize()      As Integer
Private nRightMargin()   As Integer
Private bFirstTime       As Boolean

Sub Init(frm As Form, Optional nWindState As Variant)
   
   Dim I          As Integer
   Dim bWinMax    As Boolean
   
   bWinMax = Not IsMissing(nWindState)
   
   nFormHeight = frm.Height
   nFormWidth = frm.Width
   nNumOfControls = frm.Controls.Count - 1
   bFirstTime = True
   ReDim nTop(nNumOfControls)
   ReDim nLeft(nNumOfControls)
   ReDim nHeight(nNumOfControls)
   ReDim nWidth(nNumOfControls)
   ReDim nFontSize(nNumOfControls)
   
   ReDim nRightMargin(nNumOfControls)
   On Error Resume Next
   For I = 0 To nNumOfControls
      If TypeOf frm.Controls(I) Is Line Then
         nTop(I) = frm.Controls(I).Y1
         nLeft(I) = frm.Controls(I).X1
         nHeight(I) = frm.Controls(I).Y2
         nWidth(I) = frm.Controls(I).X2
      Else
         nTop(I) = frm.Controls(I).Top
         nLeft(I) = frm.Controls(I).Left
         nHeight(I) = frm.Controls(I).Height
         nWidth(I) = frm.Controls(I).Width
         nFontSize(I) = frm.FontSize
         nRightMargin(I) = frm.Controls(I).RightMargin
      End If
   Next
   
   If bWinMax Or frm.WindowState = 2 Then ' maxim
      frm.Height = Screen.Height
      frm.Width = Screen.Width
   Else
      frm.Height = frm.Height * Screen.Height / 7290
      frm.Width = frm.Width * Screen.Width / 9690
   End If
   
   bFirstTime = True
   
End Sub

Sub FormResize(frm As Form)
   
   Dim I             As Integer
   Dim nCaptionSize  As Integer
   Dim dRatioX       As Double
   Dim dRatioY       As Double
   Dim nSaveRedraw   As Long
   
   On Error Resume Next
   nSaveRedraw = frm.AutoRedraw
   
   frm.AutoRedraw = True
   
   If bFirstTime Then
      bFirstTime = False
      Exit Sub
   End If
   
   If frm.Height < nFormHeight / 2 Then frm.Height = nFormHeight / 2
   
   If frm.Width < nFormWidth / 2 Then frm.Width = nFormWidth / 2
   nCaptionSize = 400
   dRatioY = 1# * (nFormHeight - nCaptionSize) / (frm.Height - nCaptionSize)
   dRatioX = 1# * nFormWidth / frm.Width
   On Error Resume Next ' for comboboxes, timeres and other nonsizible controls
   
   For I = 0 To nNumOfControls
      If TypeOf frm.Controls(I) Is Line Then
         frm.Controls(I).Y1 = Int(nTop(I) / dRatioY)
         frm.Controls(I).X1 = Int(nLeft(I) / dRatioX)
         frm.Controls(I).Y2 = Int(nHeight(I) / dRatioY)
         frm.Controls(I).X2 = Int(nWidth(I) / dRatioX)
      Else
         frm.Controls(I).Top = Int(nTop(I) / dRatioY)
         frm.Controls(I).Left = Int(nLeft(I) / dRatioX)
         frm.Controls(I).Height = Int(nHeight(I) / dRatioY)
         frm.Controls(I).Width = Int(nWidth(I) / dRatioX)
         frm.Controls(I).FontSize = Int(nFontSize(I) / dRatioX) + Int(nFontSize(I) / dRatioX) Mod 2
         frm.Controls(I).RightMargin = Int(nRightMargin(I) / dRatioY)
      End If
   Next
   
   frm.AutoRedraw = nSaveRedraw
   
End Sub

Waty:

Thanks for the code. It kind of works okay, however I still have one problem:

My main form is an MDI form, which contains a picture box (To hold a Treeview) The other forms are loaded as child forms into this MDI form, allowing for the size of the picture box.

Although this code resizes them okay, I am still having trouble making them the correct size to fit into the MDI workspace.

Is there any alterations I could make to this code, to make them fit the same when the font size/ screen res changes?

For example, with a res of 1024 and small fonts they fit fine, but with a res of 1280 and large fonts they are a little too small.

Piffling little problem I know, but one which is becoming increasingly annoying!

Any further info you could give would be greatly appreciated...

BG

Sorry, no more ideas :(

Waty:
Thanks for the quick reply. I will reject the answer and see if anyone else can come up with anything.

Thanks again..

BG

Thanks - I will do that
BG