Scrolling a Form

[Bowser0044]

How can I get a form to scroll like a text box does? For example, the focus of the form is 0,0 to 500,500. How would I make it 100,100 to 600,600? Thanks

Dim VPos As Integer
Dim HPos As Integer

Private Sub Form_Load()
    'Change the following numbers to the Full height and width of your Form
    intFullHeight = 8000
    intFullWidth = 8000
    'This is the how much of your Form is displayed
    intDisplayHeight = Me.Height
    intDisplayWidth = Me.Width

    With VScroll1
        .Height = Me.ScaleHeight
        .Min = 0
        .Max = intFullHeight - intDisplayHeight
        .SmallChange = Screen.TwipsPerPixelX * 10
        .LargeChange = .SmallChange
    End With
    With HScroll1
        .Width = Me.ScaleWidth
        .Min = 0
        .Max = intFullWidth - intDisplayWidth
        .SmallChange = Screen.TwipsPerPixelX * 10
        .LargeChange = .SmallChange
    End With
End Sub

Sub ScrollForm(Direction As Byte)
    Dim CTL As Control
    
    'Scroll Vertically
    If Direction = 0 Then
        For Each CTL In Me.Controls
            'Make sure it's not a ScrollBar
            If Not (TypeOf CTL Is VScrollBar) And Not (TypeOf CTL Is HScrollBar) Then
                'If it's a Line then
                If TypeOf CTL Is Line Then
                    CTL.Y1 = CTL.Y1 + VPos - VScroll1.Value
                    CTL.Y2 = CTL.Y2 + VPos - VScroll1.Value
                Else
                    CTL.Top = CTL.Top + VPos - VScroll1.Value
                End If
            End If
        Next
        VPos = VScroll1.Value
    Else
        'Scroll Horizontally
        For Each CTL In Me.Controls
            'Make sure it's not a ScrollBar
            If Not (TypeOf CTL Is VScrollBar) And Not (TypeOf CTL Is HScrollBar) Then
                'If it's a Line then
                If TypeOf CTL Is Line Then
                    CTL.X1 = CTL.X1 + HPos - HScroll1.Value
                    CTL.X2 = CTL.X2 + HPos - HScroll1.Value
                Else
                    CTL.Left = CTL.Left + HPos - HScroll1.Value
                End If
            End If
        Next
        HPos = HScroll1.Value
    End If
End Sub

Private Sub HScroll1_Change()
    ScrollForm 1
End Sub

Private Sub HScroll1_Scroll()
    ScrollForm 1
End Sub

Private Sub VScroll1_Change()
    ScrollForm 0
End Sub

Private Sub VScroll1_Scroll()
    ScrollForm 0
End Sub

[Bowser0044]

Wow! This is JUST what I needed! However, could you do one tiny more favor for me? I really do not understand how this code works, making it very difficult for me to use. Would it be possible to set it up in a code module with two sub-rounties vmove and hmove? That would be incredible if you could, if you cannot thanks aways!

Sure.

Add to a Module.

Public VPos As Integer
Public HPos As Integer
Public intDisplayWidth As Integer
Public intDisplayHeight As Integer
Public intFullWidth As Integer
Public intFullHeight As Integer

Private Sub ScrollForm(Direction As Byte, frm As Form)
    Dim CTL As Control
    
    'Scroll Vertically
    If Direction = 0 Then
        For Each CTL In frm.Controls
            'Make sure it's not a ScrollBar
            If Not (TypeOf CTL Is VScrollBar) And Not (TypeOf CTL Is HScrollBar) Then
                'If it's a Line then
                If TypeOf CTL Is Line Then
                    CTL.Y1 = CTL.Y1 + VPos - frm.VScroll1.Value
                    CTL.Y2 = CTL.Y2 + VPos - frm.VScroll1.Value
                Else
                    CTL.Top = CTL.Top + VPos - frm.VScroll1.Value
                End If
            End If
        Next
        VPos = frm.VScroll1.Value
    Else
        'Scroll Horizontally
        For Each CTL In frm.Controls
            'Make sure it's not a ScrollBar
            If Not (TypeOf CTL Is VScrollBar) And Not (TypeOf CTL Is HScrollBar) Then
                'If it's a Line then
                If TypeOf CTL Is Line Then
                    CTL.X1 = CTL.X1 + HPos - frm.HScroll1.Value
                    CTL.X2 = CTL.X2 + HPos - frm.HScroll1.Value
                Else
                    CTL.Left = CTL.Left + HPos - frm.HScroll1.Value
                End If
            End If
        Next
        HPos = frm.HScroll1.Value
    End If
End Sub

Sub hMove(frm As Form)
    ScrollForm 1, frm
End Sub

Sub VMove(frm As Form)
    ScrollForm 0, frm
End Sub

Add to a Form with HScroll1 and VScroll1

Private Sub Form_Load()
    'Change the following numbers to the Full height and width of your Form
    intFullHeight = 8000
    intFullWidth = 10000
    'This is the how much of your Form is displayed
    intDisplayHeight = Me.Height
    intDisplayWidth = Me.Width

    With VScroll1
        .Height = Me.ScaleHeight
        .Min = 0
        .Max = intFullHeight - intDisplayHeight
        .SmallChange = Screen.TwipsPerPixelX * 10
        .LargeChange = .SmallChange
    End With
    With HScroll1
        .Width = Me.ScaleWidth
        .Min = 0
        .Max = intFullWidth - intDisplayWidth
        .SmallChange = Screen.TwipsPerPixelX * 10
        .LargeChange = .SmallChange
    End With
End Sub



Private Sub HScroll1_Change()
    hMove Me    'Move horizontally
End Sub

Private Sub HScroll1_Scroll()
    hMove Me    'Move horizontally
End Sub

Private Sub VScroll1_Change()
    VMove Me    'Move vertically
End Sub

Private Sub VScroll1_Scroll()
    VMove Me    'Move vertically
End Sub

This uses hMove to move horizontally and VMove to move vertically.

[Bowser0044]

Sorry to both you once again, but I have another question. When I use this, it does this it does not scroll the background on the form. Also, how can I go backwards? When I click up on the vscroll bar, it goes the same way as if I clicked down. Same with the hscroll bar. Thanks again.

The background doesn't move because this method uses a loop to loop through each control and move them.

[Bowser0044]

I see... well than is there a way to actually scroll the form and not just all the objects on the form? Thanks.

[Fox]

You could use a picturebox as parent of all controls and move this box, would scroll all controls and the background picture

[MPrestonf12]

Meagatron, your code only accounts for if there is a line on the form right? It doesn't scroll a command button will it?

[/\/\isanThr0p]

Hey Do you see the else after the if asking if it's a line?
That makes other controls like Commandbuttons move, too.

Nice code Megatron!

Originally posted by MPrestonf12
Meagatron, your code only accounts for if there is a line on the form right? It doesn't scroll a command button will it?

/\/\isanThr0p is correct. It will scroll regardless of what control is on there. Read the comments and it will direct you.

[Mad Compie]

Can't we use the API ScrollWindowEx?
I'm not sure how to use it...