by Mikhail Shmukler (1 Submission)
Category: Miscellaneous
Compatability: Visual Basic 3.0
Difficulty: Unknown Difficulty
Date Added: Wed 3rd February 2021
Rating: 
(38 Votes)
This class can change size and location of contlols on your form if you
1. Resize form
2. Change screen resolution
Assumes
1. Add Elastic.cls
2. Add declaration 'Dim El as New 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 ....
API Declarations
VBcodersVERSION 1.0 CLASS
BEGIN
MultiUse = -1 'True
END
Attribute VB_Name = "Elastic"
Attribute VB_Creatable = True
Attribute VB_Exposed = False
Option Explicit
Dim iFormHeight As Integer, iFormWidth As Integer, iNumOfControls As Integer
Dim iTop() As Integer, iLeft() As Integer, iHeight() As Integer, iWidth() As Integer, iFontSize() As Integer, iRightMargin() As Integer
Dim bFirstTime As Boolean
Sub Init(FormName As Form, Optional WindState)
Dim I As Integer
Dim WinMax As Boolean
WinMax = Not IsMissing(WindState)
iFormHeight = FormName.Height
iFormWidth = FormName.Width
iNumOfControls = FormName.Controls.Count - 1
bFirstTime = True
ReDim iTop(iNumOfControls)
ReDim iLeft(iNumOfControls)
ReDim iHeight(iNumOfControls)
ReDim iWidth(iNumOfControls)
ReDim iFontSize(iNumOfControls)
ReDim iRightMargin(iNumOfControls)
On Error Resume Next
For I = 0 To iNumOfControls
If TypeOf FormName.Controls(I) Is Line Then
iTop(I) = FormName.Controls(I).Y1
iLeft(I) = FormName.Controls(I).X1
iHeight(I) = FormName.Controls(I).Y2
iWidth(I) = FormName.Controls(I).X2
Else
iTop(I) = FormName.Controls(I).Top
iLeft(I) = FormName.Controls(I).Left
iHeight(I) = FormName.Controls(I).Height
iWidth(I) = FormName.Controls(I).Width
iFontSize(I) = FormName.FontSize
iRightMargin(I) = FormName.Controls(I).RightMargin
End If
Next
If WinMax Or FormName.WindowState = 2 Then ' maxim
FormName.Height = Screen.Height
FormName.Width = Screen.Width
Else
FormName.Height = FormName.Height * Screen.Height / 7290
FormName.Width = FormName.Width * Screen.Width / 9690
End If
bFirstTime = True
End Sub
Sub FormResize(FormName As Form)
Dim I As Integer, Inc As Integer, CaptionSize As Integer
Dim RatioX As Double, RatioY As Double
Dim SaveRedraw%
On Error Resume Next
SaveRedraw% = FormName.AutoRedraw
FormName.AutoRedraw = True
If bFirstTime Then
bFirstTime = False
Exit Sub
End If
If FormName.Height < iFormHeight / 2 Then FormName.Height = iFormHeight / 2
If FormName.Width < iFormWidth / 2 Then FormName.Width = iFormWidth / 2
CaptionSize = 400
RatioY = 1# * (iFormHeight - CaptionSize) / (FormName.Height - CaptionSize)
RatioX = 1# * iFormWidth / FormName.Width
On Error Resume Next ' for comboboxes, timeres and other nonsizible controls
For I = 0 To iNumOfControls
If TypeOf FormName.Controls(I) Is Line Then
FormName.Controls(I).Y1 = Int(iTop(I) / RatioY)
FormName.Controls(I).X1 = Int(iLeft(I) / RatioX)
FormName.Controls(I).Y2 = Int(iHeight(I) / RatioY)
FormName.Controls(I).X2 = Int(iWidth(I) / RatioX)
Else
FormName.Controls(I).Top = Int(iTop(I) / RatioY)
FormName.Controls(I).Left = Int(iLeft(I) / RatioX)
FormName.Controls(I).Height = Int(iHeight(I) / RatioY)
FormName.Controls(I).Width = Int(iWidth(I) / RatioX)
FormName.Controls(I).FontSize = Int(iFontSize(I) / RatioX) + Int(iFontSize(I) / RatioX) Mod 2
FormName.Controls(I).RightMargin = Int(iRightMargin(I) / RatioY)
End If
Next
FormName.AutoRedraw = SaveRedraw%
End Sub