by Eugene (1 Submission)
Category: Miscellaneous
Compatability: Visual Basic 3.0
Difficulty: Intermediate
Date Added: Wed 3rd February 2021
Rating: 
(2 Votes)
Add vertical and horizontal splitter bars to your application. This
code creates a form with three panes, and two splitter bars. I originally
found the code in vbcoders.com last year, but found a couple of
bugs, so I rebuilt it from scratch, and added the horizontal splitter.
There are no DLL's or references to worry about, very easy to use.
Inputs
It is easy to integrate into your applications. You simply paste whatever
objects that you want to use into one of the three picture boxes used as
frames. Then in the _Resize event of each, change the .Move statement to
your object (or control).
Assumes
Copy the code and paste it into a text editor (like notepad). Save the file
as Form1.frm. You can always change it later.
VBcodersVERSION 5.00
Begin VB.Form Form1
Caption = "Form1"
ClientHeight = 6180
ClientLeft = 210
ClientTop = 1800
ClientWidth = 7575
LinkTopic = "Form1"
ScaleHeight = 6180
ScaleWidth = 7575
Begin VB.PictureBox picOuterFrame
Appearance = 0 'Flat
ForeColor = &H80000008&
Height = 5535
Left = 120
ScaleHeight = 5505
ScaleWidth = 7065
TabIndex = 0
Top = 120
Width = 7095
Begin VB.PictureBox spltVertical
Appearance = 0 'Flat
CausesValidation= 0 'False
ClipControls = 0 'False
FillColor = &H8000000F&
FillStyle = 0 'Solid
ForeColor = &H8000000F&
Height = 4935
Left = 3480
MousePointer = 9 'Size W E
ScaleHeight = 4905
ScaleWidth = 225
TabIndex = 1
Top = 0
Width = 255
End
Begin VB.PictureBox picRight
Appearance = 0 'Flat
BackColor = &H80000005&
ForeColor = &H80000008&
Height = 4815
Left = 3840
ScaleHeight = 4785
ScaleWidth = 2985
TabIndex = 2
Top = 240
Width = 3015
End
Begin VB.PictureBox picLeft
Appearance = 0 'Flat
ForeColor = &H80000008&
Height = 4575
Left = 0
ScaleHeight = 4545
ScaleWidth = 3345
TabIndex = 3
Top = 240
Width = 3375
Begin VB.PictureBox spltHorizontal
Appearance = 0 'Flat
FillColor = &H8000000F&
FillStyle = 0 'Solid
ForeColor = &H8000000F&
Height = 255
Left = 480
MousePointer = 7 'Size N S
ScaleHeight = 225
ScaleWidth = 2385
TabIndex = 4
Top = 2160
Width = 2415
End
Begin VB.PictureBox picTopLeft
Appearance = 0 'Flat
BackColor = &H80000005&
ForeColor = &H80000008&
Height = 1815
Left = 480
ScaleHeight = 1785
ScaleWidth = 2025
TabIndex = 6
Top = 120
Width = 2055
End
Begin VB.PictureBox picBottomLeft
Appearance = 0 'Flat
BackColor = &H80000005&
ForeColor = &H80000008&
Height = 1815
Left = 600
ScaleHeight = 1785
ScaleWidth = 2025
TabIndex = 5
Top = 2520
Width = 2055
End
End
End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private Const SPLT_WDTH As Long = 80 'width of the spltter bar
Private Const MIN_WINDOW As Long = 10 'Minimum size for any frame created by splitter bars
Private Sub Form_Load()
'**** Splitter Code ****
'No Borders, they are for development and debugging
spltVertical.BorderStyle = 0
spltHorizontal.BorderStyle = 0
picOuterFrame.BorderStyle = 0
picLeft.BorderStyle = 0
picTopLeft.BorderStyle = 0
picBottomLeft.BorderStyle = 0
picRight.BorderStyle = 0
'**** End Splitter Code ****
End Sub
Private Sub picRight_Resize()
'Resize your object to the inside of the frame
'YourObject.Move 0, 0, picRight.Width, picRight.Height
End Sub
Private Sub picTopLeft_Resize()
'Resize your object to the inside of the frame
'YourObject.Move 0, 0, picTopLeft.Width, picTopLeft.Height
End Sub
Private Sub picBottomLeft_Resize()
'Resize your object to the inside of the frame
'YourObject.Move 0, 0, picBottomLeft.Width, picBottomLeft.Height
End Sub
Private Sub Form_Resize()
'For this example, I chose to reside all the frames, depending on the size of the
' form. You may choose to put this whole assembly in another sub-frame.
'**** Splitter Code ****
'Resize the outer frame
Dim height1 As Long, width1 As Long
height1 = ScaleHeight - (2 * SPLT_WDTH)
If height1 < 0 Then height1 = 0
width1 = ScaleWidth - (2 * SPLT_WDTH)
If width1 < 0 Then width1 = 0
picOuterFrame.Move SPLT_WDTH, SPLT_WDTH, width1, height1
'**** End Splitter Code ****
End Sub
'**** Splitter Code ****
Private Sub spltVertical_MouseDown(Button As Integer, Shift As Integer, x As Single, y As Single)
If Button = vbLeftButton Then
spltVertical.Move (spltVertical.Left - (SPLT_WDTH \ 2)) + x, 0, SPLT_WDTH, picOuterFrame.ScaleHeight
spltVertical.BackColor = vbButtonShadow 'change the splitter colour
End If
End Sub
Private Sub spltVertical_MouseMove(Button As Integer, Shift As Integer, x As Single, y As Single)
If spltVertical.BackColor = vbButtonShadow Then
spltVertical.Move (spltVertical.Left - (SPLT_WDTH \ 2)) + x, 0, SPLT_WDTH, picOuterFrame.ScaleHeight
End If
End Sub
Private Sub spltVertical_MouseUp(Button As Integer, Shift As Integer, x As Single, y As Single)
If spltVertical.BackColor = vbButtonShadow Then
spltVertical.BackColor = vbButtonFace 'restore splitter colour
spltVertical.Move (spltVertical.Left - (SPLT_WDTH \ 2)) + x, 0, SPLT_WDTH, picOuterFrame.ScaleHeight
'Set the absolute Boundaries
Dim lAbsLeft As Long
Dim lAbsRight As Long
lAbsLeft = MIN_WINDOW
lAbsRight = picOuterFrame.ScaleWidth - (SPLT_WDTH + MIN_WINDOW)
Select Case spltVertical.Left
Case Is < lAbsLeft 'the pane is too thin
spltVertical.Move lAbsLeft, 0, SPLT_WDTH, picOuterFrame.ScaleHeight
Case Is > lAbsRight 'the pane is too wide
spltVertical.Move lAbsRight, 0, SPLT_WDTH, picOuterFrame.ScaleHeight
End Select
'reposition both frames, and the spltVertical bar
picOuterFrame_Resize
End If
End Sub
Private Sub spltHorizontal_MouseDown(Button As Integer, Shift As Integer, x As Single, y As Single)
If Button = vbLeftButton Then
spltHorizontal.BackColor = vbButtonShadow 'change the splitter colour
spltHorizontal.Move 0, (spltHorizontal.Top - (SPLT_WDTH \ 2)) + y, picLeft.ScaleWidth, SPLT_WDTH
End If
End Sub
Private Sub spltHorizontal_MouseMove(Button As Integer, Shift As Integer, x As Single, y As Single)
If spltHorizontal.BackColor = vbButtonShadow Then
spltHorizontal.Move 0, (spltHorizontal.Top - (SPLT_WDTH \ 2)) + y, picLeft.ScaleWidth, SPLT_WDTH
End If
End Sub
Private Sub splthorizontal_MouseUp(Button As Integer, Shift As Integer, x As Single, y As Single)
If spltHorizontal.BackColor = vbButtonShadow Then
spltHorizontal.BackColor = vbButtonFace 'restore splitter colour
spltHorizontal.Move 0, (spltHorizontal.Top - (SPLT_WDTH \ 2)) + y, picLeft.ScaleWidth, SPLT_WDTH
'Set the absolute Boundaries
Dim lAbsTop As Long
Dim lAbsBottom As Long
lAbsTop = MIN_WINDOW
lAbsBottom = picLeft.ScaleHeight - (SPLT_WDTH + MIN_WINDOW)
Select Case spltHorizontal.Top
Case Is < lAbsTop 'the pane is too short
spltHorizontal.Move 0, lAbsTop, picLeft.ScaleWidth, SPLT_WDTH
Case Is > lAbsBottom 'the pane is too tall
spltHorizontal.Move 0, lAbsBottom, picLeft.ScaleWidth, SPLT_WDTH
End Select
'reposition both sub-frames, and the spltHorizontal bar
picLeft_Resize
End If
End Sub
Private Sub picOuterFrame_Resize()
Dim x1 As Long
Dim x2 As Long
Dim y1 As Long
On Error Resume Next
y1 = picOuterFrame.ScaleHeight
x1 = spltVertical.Left
x2 = x1 + SPLT_WDTH + 1
picLeft.Move 0, 0, x1 - 1, y1
spltVertical.Move x1, 0, SPLT_WDTH, y1
picRight.Move x2, 0, picOuterFrame.ScaleWidth - x2, y1
'Force a refresh on the left side
picLeft_Resize
End Sub
Private Sub picLeft_Resize()
'Resize the internal stuff. Only the width's
Dim x1 As Long
Dim y1 As Long
Dim y2 As Long
Dim y3 as Long
x1 = picLeft.Width
y1 = spltHorizontal.Top
y2 = y1 + SPLT_WDTH + 1
'We have to make sure that we do not size any windows to a negative dimension
y3 = y1 - 1
If y3 < MIN_WINDOW Then
y3 = MIN_WINDOW
End If
picTopLeft.Move 0, 0, x1, y3
spltHorizontal.Move 0, y1, x1, SPLT_WDTH
y3 = picLeft.ScaleHeight - y2
If y3 < MIN_WINDOW Then
y3 = MIN_WINDOW
End If
picBottomLeft.Move 0, y2, x1, y3
End Sub
'**** End Splitter Code ****
