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Visual Basic .NET - Read Less - Learn More
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Visual_Basic.NET_Read_Less_Learn_More_Richard_Bowman_Visual_2002.iso
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Ch12-CreateAControlFromScratch
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UserControl1.vb
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Text File
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2001-10-02
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3KB
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77 lines
Public Class UserControl1
Inherits System.Windows.Forms.UserControl
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'UserControl1 overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.Container
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
'
'UserControl1
'
Me.Name = "UserControl1"
End Sub
#End Region
Private pressed As Boolean
Private dispText As String = "Standard text"
Private Sub UserControl1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
Private Sub UserControl1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown
pressed = True
Me.Invalidate()
End Sub
Private Sub UserControl1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseUp
pressed = False
Me.Invalidate()
End Sub
Public Property DisplayText() As String
Get
Return dispText
End Get
Set(ByVal Value As String)
dispText = Value
Me.Invalidate()
End Set
End Property
Private Sub UserControl1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
Dim f As New Font("Arial", 20, FontStyle.Bold), c As Color
Dim p As SizeF = e.Graphics.MeasureString(dispText, f)
Dim x As Integer = e.ClipRectangle.Width / 2 - p.Width / 2
Dim y As Integer = e.ClipRectangle.Height / 2 - p.Height / 2
If pressed Then c = Color.Red Else c = ForeColor
e.Graphics.DrawString(dispText, f, New SolidBrush(c), x, y)
End Sub
End Class