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How to do massroll over buttons and mass handlers.

How to do massroll over buttons and mass handlers., Many people may wonder how to theme your aplications in Visual Basic.N

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Ändrew

25 Apr, 2009 - 11:56 PM

Post #1

Hello there,

Many people may wonder how to theme your aplications in Visual Basic.NET and ill show you how.
First lets start a new project and we will call it themed buttons.

IPB Image

Make 3 buttons.

IPB Image

Now dubble click on the form and in the forms load put this code.

CODE

        'Turns all the buttons into flat ones'
        Button1.FlatStyle = FlatStyle.Flat
        Button2.FlatStyle = FlatStyle.Flat
        Button3.FlatStyle = FlatStyle.Flat
        'Turns all the buttons backcolour to red'
        Button1.BackColor = Color.Red
        Button2.BackColor = Color.Red
        Button3.BackColor = Color.Red

Now thats done we will add this code right under it remember we havent left the form load sub.

CODE

    'Magical code that lets us add handlers'
        For Teller As Integer = 0 To Controls.Count - 1
            Dim Control As Control = Controls(Teller)
            If Not Control.GetType() Is GetType(Button) Then
                Continue For
            End If
            Dim ButtonControl As Button = Control
            AddHandler ButtonControl.MouseEnter, AddressOf MyFunctionToTriggerOnMouseOver
            AddHandler ButtonControl.MouseLeave, AddressOf MyFunctionToTriggerOnMouseLeave
        AddHandler ButtonControl.MouseDown, AddressOf MyFunctionToTriggerOnMouseDown
        AddHandler ButtonControl.MouseUp, AddressOf MyFunctionToTriggerOnMouseUp
        Next

As you see we have errors.
Ok now we leave the sub and add 1 line and now type this code in this will fix the errors.

CODE

    Public Sub MyFunctionToTriggerOnMouseOver(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Dim ButtonControl As Button = Sender
    'Changes the color of the buttons to blue when the mouse is over it'
        ButtonControl.BackColor = Color.Blue
    End Sub

    Public Sub MyFunctionToTriggerOnMouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Dim ButtonControl As Button = Sender
    'Changes the color back to red when the mouse leaves.'
        ButtonControl.BackColor = Color.Red
    End Sub

    Public Sub MyFunctionToTriggerOnMouseDown(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Dim ButtonControl As Button = sender
    'Changes the color to green when mouse goes down.'
        ButtonControl.BackColor = Color.Green
    End Sub

    Public Sub MyFunctionToTriggerOnMouseUp(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Dim ButtonControl As Button = sender
    'Changes the color to red when the mouse goes up'
        ButtonControl.BackColor = Color.Red
    End Sub

All the code should look about like this

IPB Image

Now the errors are gone!
Well now lets try this press the arrow on the quickbar to debug the program.

Now you can see and use this code in many ways to add handlers.

Credits:
Ändrew
Goethals
and any one else that I think helped me?