form1.vb

Visual.Basic.NET实用编程百例-47.6M.zip

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Text
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 dispose 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()
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Name = "Form1"
        Me.Text = "使用Font对象"

    End Sub

#End Region

    Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
        Dim g As Graphics = e.Graphics
        g.SmoothingMode = SmoothingMode.AntiAlias

        '先输出一段简单的文本
        g.DrawString("你好，欢迎来到字体的世界！", Me.Font, New SolidBrush(Color.Red), 10, 10)

        '绘制一段带有阴影的文本
        Dim fm As FontFamily
        fm = New FontFamily("宋体")
        '创建字体
        Dim f As System.Drawing.Font
        f = New System.Drawing.Font(fm, 20)
        Dim sb As Brush
        Dim tb As Brush
        tb = New TextureBrush(New Bitmap("..\Blue Lace 16.BMP"))
        '用作阴影的刷子，是透明度较高的黑色刷子
        sb = New SolidBrush(Color.FromArgb(70, Color.Black))
        Dim t1 As String = "这是一个阴影的例子！"
        '阴影文本与正文本相错位
        '正文本覆盖阴影文本
        g.DrawString(t1, f, sb, 35, 45)
        g.DrawString(t1, f, tb, 30, 40)

        '将一段文本显示在窗体的正中位置
        Dim t2 As String = "这是一个居中的例子！"
        '获取字体显示所占据的大小
        Dim t2Size As SizeF = g.MeasureString(t2, f)
        Dim t2x As Double = (Me.Width - t2Size.Width) / 2
        Dim t2y As Double = (Me.Height - t2Size.Height) / 2
        g.DrawString(t2, f, New SolidBrush(Color.Red), CType(t2x, Single), CType(t2y, Single))

        '输出一段渐变色的旋转文本
        Dim t3 As String = "这是一段颜色渐变的文本！"
        Dim t3Size As SizeF = g.MeasureString(t3, f)
        Dim lgb As Brush
        '选择(200, 0)为第一点是因为该段文本从x坐标为200处开始
        '选择(200 + t3Size.Width, 0)为第二点是为了
        '从文本的开头到结尾正好完成一次颜色的渐变
        lgb = New LinearGradientBrush(New Point(200, 0), New Point(320 + t3Size.Width, 0), Color.Blue, Color.Red)
        '绕原点旋转
        g.RotateTransform(-30)
        '平移原点
        g.TranslateTransform(-180, 300)
        g.DrawString(t3, f, lgb, 200, 0)
        g.ResetTransform()
    End Sub

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

    End Sub
End Class