by Leigh Bowers (6 Submissions)
Category: Custom Controls/Forms/Menus
Compatability: Visual Basic 3.0
Difficulty: Unknown Difficulty
Date Added: Wed 3rd February 2021
Rating: 
(39 Votes)
After seeing the "Elastic" post below, I thought I'd release my ElasticForms module 'cause this one actually *does* resize the components on the form (even lines). It's pretty tight, fast and it even allows you to set a min width and min height for a form. A zip containing the source and an example project can be found on my home page...
Side Effects
Paste this code into a class module (clsElasticForms for example).
Note: It doesn't handle fonts - it easily could do, I just didn't need it to.
VBcodersOption Explicit
Private fForm As Form
Private lOriginalWidth As Long
Private lOriginalHeight As Long
Private lMinWidth As Long
Private lMinHeight As Long
Private Type udtControl
lLeft As Long
lTop As Long
lWidth As Long
lHeight As Long
End Type
Private aControls() As udtControl
Public Property Let Form(ByVal fPassForm As Form)
Dim iCount As Integer
Dim cControl As Control
Set fForm = fPassForm
' Store form's original Width & Height
lOriginalWidth = fForm.Width
lOriginalHeight = fForm.Height
' Use error trapping to ignore components that don't
' support certain properties being read at run-time
On Error Resume Next
' Store the form's component's properties
iCount = 0
ReDim aControls(fForm.Controls.Count)
For Each cControl In fForm.Controls
iCount = iCount + 1
With aControls(iCount)
If TypeOf cControl Is Line Then
.lLeft = cControl.X1
.lTop = cControl.Y1
.lWidth = cControl.X2
.lHeight = cControl.Y2
Else
.lLeft = cControl.Left
.lTop = cControl.Top
.lWidth = cControl.Width
.lHeight = cControl.Height
End If
End With
Next
End Property
Public Sub FormResize()
' Resize the form
Dim iCount As Integer
Dim cControl As Control
Dim iTaskBarHeight As Integer
Dim sOriginalWidthUnit As Single
Dim sOriginalHeightUnit As Single
If fForm Is Nothing Then Exit Sub
' Don't process minimized forms
If fForm.WindowState = vbMinimized Then Exit Sub
' Check form size against minimums
If fForm.Width < lMinWidth Then fForm.Width = lMinWidth
If fForm.Height < lMinHeight Then fForm.Height = lMinHeight
' Perform calculations in advance (speed increase)
iTaskBarHeight = 28 * Screen.TwipsPerPixelY ' Standard height
sOriginalWidthUnit = lOriginalWidth / fForm.Width
sOriginalHeightUnit = (lOriginalHeight - iTaskBarHeight) / (fForm.Height - iTaskBarHeight)
' Use error trapping to ignore components that don't
' support certain properties being set at run-time
On Error Resume Next
' Resize...
iCount = 0
For Each cControl In fForm.Controls
iCount = iCount + 1
With cControl
If TypeOf cControl Is Line Then
.X1 = Int(aControls(iCount).lLeft / sOriginalWidthUnit)
.Y1 = Int(aControls(iCount).lTop / sOriginalHeightUnit)
.X2 = Int(aControls(iCount).lWidth / sOriginalWidthUnit)
.Y2 = Int(aControls(iCount).lHeight / sOriginalHeightUnit)
Else
.Left = Int(aControls(iCount).lLeft / sOriginalWidthUnit)
.Top = Int(aControls(iCount).lTop / sOriginalHeightUnit)
.Width = Int(aControls(iCount).lWidth / sOriginalWidthUnit)
.Height = Int(aControls(iCount).lHeight / sOriginalHeightUnit)
End If
End With
Next
End Sub
Private Sub Class_Terminate()
Set fForm = Nothing
End Sub
Public Property Let MinWidth(ByVal lPassMinWidth As Long)
lMinWidth = lPassMinWidth
End Property
Public Property Let MinHeight(ByVal lPassMinheight As Long)
lMinHeight = lPassMinheight
End Property