VB.Net by API/System.Drawing.Drawing2D/HatchStyle

HatchStyle.BackwardDiagonal

  
Imports System
Imports System.Drawing
Imports System.Collections
Imports System.ruponentModel
Imports System.Windows.Forms
Imports System.Data
Imports System.Drawing.Drawing2D
public class HatchBrushStyleComboBox
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

Public Class Form1
    Inherits System.Windows.Forms.Form
    Private style As New HatchStyle
    Private forClr As Color = Color.Blue
    Private backClr As Color = Color.Red
#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.ruponentModel.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 Label1 As System.Windows.Forms.Label
    Friend WithEvents ComboBox1 As System.Windows.Forms.ruboBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents ForColorBtn As System.Windows.Forms.Button
    Friend WithEvents BackGroundBtn As System.Windows.Forms.Button
    Friend WithEvents ApplyBtn As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.ruboBox1 = New System.Windows.Forms.ruboBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label3 = New System.Windows.Forms.Label
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.ForColorBtn = New System.Windows.Forms.Button
        Me.BackGroundBtn = New System.Windows.Forms.Button
        Me.ApplyBtn = New System.Windows.Forms.Button
        Me.SuspendLayout()
        "
        "Label1
        "
        Me.Label1.Location = New System.Drawing.Point(8, 8)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(72, 23)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "Select Style:"
        "
        "ComboBox1
        "
        Me.ruboBox1.Location = New System.Drawing.Point(96, 8)
        Me.ruboBox1.Name = "ComboBox1"
        Me.ruboBox1.Size = New System.Drawing.Size(121, 21)
        Me.ruboBox1.TabIndex = 1
        Me.ruboBox1.Text = "ComboBox1"
        "
        "Label2
        "
        Me.Label2.Location = New System.Drawing.Point(8, 40)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(96, 23)
        Me.Label2.TabIndex = 2
        Me.Label2.Text = "Forground Color:"
        "
        "TextBox1
        "
        Me.TextBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.TextBox1.Location = New System.Drawing.Point(112, 40)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.ReadOnly = True
        Me.TextBox1.Size = New System.Drawing.Size(32, 20)
        Me.TextBox1.TabIndex = 3
        Me.TextBox1.Text = ""
        "
        "Label3
        "
        Me.Label3.Location = New System.Drawing.Point(0, 72)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(104, 23)
        Me.Label3.TabIndex = 4
        Me.Label3.Text = "Background Color:"
        "
        "TextBox2
        "
        Me.TextBox2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.TextBox2.Location = New System.Drawing.Point(112, 72)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.ReadOnly = True
        Me.TextBox2.Size = New System.Drawing.Size(32, 20)
        Me.TextBox2.TabIndex = 5
        Me.TextBox2.Text = ""
        "
        "ForColorBtn
        "
        Me.ForColorBtn.Location = New System.Drawing.Point(152, 40)
        Me.ForColorBtn.Name = "ForColorBtn"
        Me.ForColorBtn.Size = New System.Drawing.Size(48, 23)
        Me.ForColorBtn.TabIndex = 6
        Me.ForColorBtn.Text = "Pick..."
        "
        "BackGroundBtn
        "
        Me.BackGroundBtn.Location = New System.Drawing.Point(152, 72)
        Me.BackGroundBtn.Name = "BackGroundBtn"
        Me.BackGroundBtn.Size = New System.Drawing.Size(48, 23)
        Me.BackGroundBtn.TabIndex = 7
        Me.BackGroundBtn.Text = "Pic..."
        "
        "ApplyBtn
        "
        Me.ApplyBtn.Location = New System.Drawing.Point(224, 72)
        Me.ApplyBtn.Name = "ApplyBtn"
        Me.ApplyBtn.TabIndex = 8
        Me.ApplyBtn.Text = "Apply"
        "
        "Form1
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(416, 325)
        Me.Controls.Add(Me.ApplyBtn)
        Me.Controls.Add(Me.BackGroundBtn)
        Me.Controls.Add(Me.ForColorBtn)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.ruboBox1)
        Me.Controls.Add(Me.Label1)
        Me.Name = "Form1"
        Me.Text = "Hatch Brushes"
        Me.ResumeLayout(False)
    End Sub
#End Region
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        FillHatchStyles()
    End Sub
    Private Sub FillHatchStyles()
        comboBox1.Items.Add(HatchStyle.BackwardDiagonal.ToString())
        comboBox1.Items.Add(HatchStyle.Cross.ToString())
        comboBox1.Items.Add(HatchStyle.DashedVertical.ToString())
        comboBox1.Items.Add(HatchStyle.DiagonalCross.ToString())
        comboBox1.Items.Add(HatchStyle.HorizontalBrick.ToString())
        comboBox1.Items.Add(HatchStyle.LightDownwardDiagonal.ToString())
        comboBox1.Items.Add(HatchStyle.LightUpwardDiagonal.ToString())
        comboBox1.Text = HatchStyle.BackwardDiagonal.ToString()
    End Sub "FillHatchStyles

    Private Sub ApplyBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ApplyBtn.Click
        Dim g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim str As String = ComboBox1.Text
        Select Case str
            Case "BackwardDiagonal"
                style = HatchStyle.BackwardDiagonal
            Case "DashedVertical"
                style = HatchStyle.DashedVertical
            Case "Cross"
                style = HatchStyle.Cross
            Case "DiagonalCross"
                style = HatchStyle.DiagonalCross
            Case "HorizontalBrick"
                style = HatchStyle.HorizontalBrick
            Case "LightDownwardDiagonal"
                style = HatchStyle.LightDownwardDiagonal
            Case "LightUpwardDiagonal"
                style = HatchStyle.LightUpwardDiagonal
            Case Else
        End Select
        Dim brush As New HatchBrush(style, forClr, backClr)
        g.FillRectangle(brush, 50, 100, 200, 200)
        brush.Dispose()
        g.Dispose()
    End Sub
End Class

New HatchBrush

  

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class DrawArrowHatchStyleHorizontal
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
public class Form1
  Inherits System.Windows.Forms.Form
  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        e.Graphics.ScaleTransform(30, 30, MatrixOrder.Append)
        DrawArrow(e.Graphics, HatchStyle.Horizontal)
    End Sub
    Private Sub DrawArrow(ByVal gr As Graphics, ByVal hatch_style As HatchStyle)
        Dim pts() As Point = { _
            New Point(0, 1), _
            New Point(2, 1), _
            New Point(2, 0), _
            New Point(4, 2), _
            New Point(2, 4), _
            New Point(2, 3), _
            New Point(0, 3) _
        }
        gr.FillPolygon(New HatchBrush(hatch_style, Color.Black, Color.White), pts)
        gr.DrawPolygon(New Pen(Color.Black, 0), pts)
    End Sub
  Public Sub New()
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
  End Sub
End Class