VB.Net Tutorial/2D Graphics/Ellipse — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Текущая версия на 15:54, 26 мая 2010
Graphics.DrawEllipse
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class DrawShapes
public Shared Sub Main Application.Run(New FrmComboBox) End Sub
End class Public Class FrmComboBox
Inherits Form
- 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 "Form 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 " contains shape list (circle, square, ellipse, pie) Friend WithEvents cboImage As System.Windows.Forms.ruboBox "Required by the Windows Form Designer Private components As System.ruponentModel.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() Me.cboImage = New System.Windows.Forms.ruboBox() Me.SuspendLayout() " "cboImage " Me.cboImage.DropDownWidth = 121 Me.cboImage.Items.AddRange(New Object() {"Circle", "Square", "Ellipse", "Pie", "Filled Circle", "Filled Square", "Filled Ellipse", "Filled Pie"}) Me.cboImage.Location = New System.Drawing.Point(24, 16) Me.cboImage.Name = "cboImage" Me.cboImage.Size = New System.Drawing.Size(121, 21) Me.cboImage.TabIndex = 0 " "FrmComboBox " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(292, 273) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.cboImage}) Me.Name = "FrmComboBox" Me.Text = "ComboBoxTest" Me.ResumeLayout(False) End Sub
- End Region
Private Sub cboImage_SelectedIndexChanged _ (ByVal sender As System.Object, _ ByVal e As System.EventArgs) _ Handles cboImage.SelectedIndexChanged Dim myGraphics As Graphics = MyBase.CreateGraphics() Dim myPen As New Pen(Color.DarkRed) Dim mySolidBrush As New SolidBrush(Color.DarkRed) myGraphics.Clear(Color.White) Select Case cboImage.SelectedIndex Case 0 " case circle is selected myGraphics.DrawEllipse(myPen, 50, 50, 150, 150) Case 1 myGraphics.DrawRectangle(myPen, 50, 50, 150, 150) Case 2 myGraphics.DrawEllipse(myPen, 50, 85, 150, 115) Case 3 myGraphics.DrawPie(myPen, 50, 50, 150, 150, 0, 45) Case 4 myGraphics.FillEllipse(mySolidBrush, 50, 50, 150, 150) Case 5 myGraphics.FillRectangle(mySolidBrush, 50, 50, 150, 150) Case 6 myGraphics.FillEllipse(mySolidBrush, 50, 85, 150, 115) Case 7 myGraphics.FillPie(mySolidBrush, 50, 50, 150, 150, 0, 45) End Select End Sub
End Class</source>