Imports System
Imports System.Drawing
Imports System.Collections
Imports System.ComponentModel
Imports System.Windows.Forms
Imports System.Data
Imports System.Drawing.Drawing2D
public class DrawCoordinate
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Inherits System.Windows.Forms.Form
Private startPoint As New Point(50, 217)
Private endPoint As New Point(50, 217)
Public Sub New()
MyBase.New()
InitializeComponent()
End Sub
Private components As System.ComponentModel.IContainer
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents CheckBox1 As System.Windows.Forms.CheckBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.Button1 = New System.Windows.Forms.Button
Me.CheckBox1 = New System.Windows.Forms.CheckBox
Me.SuspendLayout()
'
'Button1
'
Me.Button1.BackColor = System.Drawing.SystemColors.Desktop
Me.Button1.Location = New System.Drawing.Point(352, 16)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(96, 24)
Me.Button1.TabIndex = 0
Me.Button1.Text = "Clear All"
'
'CheckBox1
'
Me.CheckBox1.Location = New System.Drawing.Point(352, 56)
Me.CheckBox1.Name = "CheckBox1"
Me.CheckBox1.TabIndex = 1
Me.CheckBox1.Text = "Rectangle"
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.BackColor = System.Drawing.SystemColors.ActiveCaptionText
Me.ClientSize = New System.Drawing.Size(480, 317)
Me.Controls.Add(Me.CheckBox1)
Me.Controls.Add(Me.Button1)
Me.Text = ""
Me.ResumeLayout(False)
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
startPoint.X = 50
startPoint.Y = 217
endPoint.X = 50
endPoint.Y = 217
Me.Invalidate(Me.ClientRectangle)
End Sub
Protected Overrides Sub OnMouseDown(ByVal e As MouseEventArgs)
If e.Button = MouseButtons.Left Then
Dim g1 As Graphics = Me.CreateGraphics()
Dim linePen As New Pen(Color.Green, 1)
Dim ellipsePen As New Pen(Color.Red, 1)
startPoint = endPoint
endPoint = New Point(e.X, e.Y)
g1.DrawLine(linePen, startPoint, endPoint)
If checkBox1.Checked Then
g1.DrawRectangle(ellipsePen, e.X - 2, e.Y - 2, 4, 4)
Else
g1.DrawEllipse(ellipsePen, e.X - 2, e.Y - 2, 4, 4)
End If
linePen.Dispose()
ellipsePen.Dispose()
g1.Dispose()
End If
End Sub
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
Dim g As Graphics = e.Graphics
Dim vertFont As New Font("Verdana", 10, FontStyle.Bold)
Dim horzFont As New Font("Verdana", 10, FontStyle.Bold)
Dim vertBrush As New SolidBrush(Color.Black)
Dim horzBrush As New SolidBrush(Color.Blue)
Dim blackPen As New Pen(Color.Black, 2)
Dim bluePen As New Pen(Color.Blue, 2)
' Drawing a vertical and a horizontal line
g.DrawLine(blackPen, 50, 220, 50, 25)
g.DrawLine(bluePen, 50, 220, 250, 220)
'X axis drawing
g.DrawString("0", horzFont, horzBrush, 30, 220)
g.DrawString("1", horzFont, horzBrush, 50, 220)
g.DrawString("2", horzFont, horzBrush, 70, 220)
g.DrawString("3", horzFont, horzBrush, 90, 220)
g.DrawString("4", horzFont, horzBrush, 110, 220)
g.DrawString("5", horzFont, horzBrush, 130, 220)
g.DrawString("6", horzFont, horzBrush, 150, 220)
g.DrawString("7", horzFont, horzBrush, 170, 220)
g.DrawString("8", horzFont, horzBrush, 190, 220)
g.DrawString("9", horzFont, horzBrush, 210, 220)
g.DrawString("10", horzFont, horzBrush, 230, 220)
' Drawing vertical strings
Dim vertStrFormat As New StringFormat
vertStrFormat.FormatFlags = StringFormatFlags.DirectionVertical
g.DrawString("-", horzFont, horzBrush, 50, 212, vertStrFormat)
g.DrawString("-", horzFont, horzBrush, 70, 212, vertStrFormat)
g.DrawString("-", horzFont, horzBrush, 90, 212, vertStrFormat)
g.DrawString("-", horzFont, horzBrush, 110, 212, vertStrFormat)
g.DrawString("-", horzFont, horzBrush, 130, 212, vertStrFormat)
g.DrawString("-", horzFont, horzBrush, 150, 212, vertStrFormat)
g.DrawString("-", horzFont, horzBrush, 170, 212, vertStrFormat)
g.DrawString("-", horzFont, horzBrush, 190, 212, vertStrFormat)
g.DrawString("-", horzFont, horzBrush, 210, 212, vertStrFormat)
g.DrawString("-", horzFont, horzBrush, 230, 212, vertStrFormat)
'Y axis drawing
g.DrawString("100-", vertFont, vertBrush, 20, 20)
g.DrawString("90 -", vertFont, vertBrush, 25, 40)
g.DrawString("80 -", vertFont, vertBrush, 25, 60)
g.DrawString("70 -", vertFont, vertBrush, 25, 80)
g.DrawString("60 -", vertFont, vertBrush, 25, 100)
g.DrawString("50 -", vertFont, vertBrush, 25, 120)
g.DrawString("40 -", vertFont, vertBrush, 25, 140)
g.DrawString("30 -", vertFont, vertBrush, 25, 160)
g.DrawString("20 -", vertFont, vertBrush, 25, 180)
g.DrawString("10 -", vertFont, vertBrush, 25, 200)
' Dispose
vertFont.Dispose()
horzFont.Dispose()
vertBrush.Dispose()
horzBrush.Dispose()
blackPen.Dispose()
bluePen.Dispose()
End Sub
End Class
