form1.vb

苏金明编写的《用VB.NET和VC#.NET开发交互式CAD系统》一书的源代码

Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写处置以清理组件列表。
    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

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意：以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        components = New System.ComponentModel.Container()
        Me.Text = "Form1"
    End Sub

#End Region

    Private lines As New CLines()
    Private linesE As New CLineEnum()
    Private aID As Integer
    Private pBegin, pEnd As PointF

    Private Sub CreateLines()
        Dim line(19) As CLine
        Dim i As Integer
        pBegin.Y = 200
        pEnd.Y = 200
        For i = 0 To 19
            aID = i
            With pBegin
                .X = 0
                .Y += 5 + i + 1
            End With
            With pEnd
                .X = 800
                .Y += 5 + i + 1
            End With
            line(i) = New CLine(aID, Color.FromArgb(200, i * 5, 200, i * 13), i + 1, pBegin, pEnd)
            lines.Add(line(i))
        Next i
        linesE.AddLines(lines)
    End Sub

    Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        Dim g As Graphics = e.Graphics
        g.FillRectangle(Brushes.White, Me.ClientRectangle)
        Dim i As Integer
        Dim line As CLine
        For Each line In linesE
            line.Draw(g)
        Next
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        CreateLines()
    End Sub
End Class