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Public Class PatternDraw
Inherits System.Windows.Forms.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
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'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.
Friend WithEvents picCanvas As System.Windows.Forms.PictureBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.picCanvas = New System.Windows.Forms.PictureBox()
Me.SuspendLayout()
'
'picCanvas
'
Me.picCanvas.BackColor = System.Drawing.Color.White
Me.picCanvas.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
Me.picCanvas.Location = New System.Drawing.Point(9, 8)
Me.picCanvas.Name = "picCanvas"
Me.picCanvas.Size = New System.Drawing.Size(160, 160)
Me.picCanvas.TabIndex = 0
Me.picCanvas.TabStop = False
'
'PatternDraw
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(180, 210)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.picCanvas})
Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow
Me.Name = "PatternDraw"
Me.Text = "Draw Pattern"
Me.ResumeLayout(False)
End Sub
#End Region
Private m_Drawing As Boolean
Private m_LastX As Integer
Private m_LastY As Integer
Private m_Bitmap As Bitmap
Private m_Graphics As Graphics
' Allocate the first Bitmap.
Private Sub Form_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
AllocateBitmap()
End Sub
' Make a new Bitmap to draw on.
Private Sub Form_Resize(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Resize
AllocateBitmap()
End Sub
' Make a new Bitmap to draw on.
Private Sub AllocateBitmap()
' Make the PictureBox fill the form.
' Make a new Bitmap.
m_Bitmap = New Bitmap(picCanvas.Width, picCanvas.Height)
' Make a Graphics object to draw on the Bitmap.
m_Graphics = Graphics.FromImage(m_Bitmap)
' Make the PictureBox show the empty Bitmap.
picCanvas.Image = m_Bitmap
End Sub
' Start scribbling.
Private Sub picCanvas_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles picCanvas.MouseDown
m_Drawing = True
m_LastX = e.X
m_LastY = e.Y
End Sub
' Continue scribbling.
Private Sub picCanvas_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles picCanvas.MouseMove
If m_Drawing Then
' Draw the new line.
If e.Button = MouseButtons.Left Then
m_Graphics.FillEllipse(New SolidBrush(Color.Black), e.X - 15, e.Y - 15, 30, 30)
Else
m_Graphics.FillEllipse(New SolidBrush(Color.White), e.X - 15, e.Y - 15, 30, 30)
End If
' Display the result.
picCanvas.Image = m_Bitmap
' Save the latest point.
m_LastX = e.X
m_LastY = e.Y
End If
End Sub
' Stop scribbling.
Private Sub picCanvas_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles picCanvas.MouseUp
m_Drawing = False
End Sub
End Class
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Architect, Developer, Speaker | Wannabe GUT inventor & Data Scientist | Microsoft MVP in C#