Csharp/CSharp Tutorial/2D/Pens
Содержание
A custom dashed Pen
<source lang="csharp">using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class PenDashedDot : System.Windows.Forms.Form {
private System.ruponentModel.Container components = null;
public PenDashedDot()
{
InitializeComponent();
SetStyle(ControlStyles.ResizeRedraw, true);
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.PenDashedDot_Paint);
}
[STAThread]
static void Main()
{
Application.Run(new PenDashedDot());
}
private void PenDashedDot_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
Pen customDashPen = new Pen(Color.BlueViolet, 5);
float[] myDashes = {5.0f, 2.0f, 1.0f, 3.0f};
customDashPen.DashPattern = myDashes;
g.DrawRectangle(customDashPen, ClientRectangle);
}
}</source>
All LineCap Demo
<source lang="csharp">using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class LineCapDemo : System.Windows.Forms.Form {
private System.ruponentModel.Container components = null;
public LineCapDemo()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Resize += new System.EventHandler(this.LineCapDemo_Resize);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.LineCapDemo_Paint);
}
[STAThread]
static void Main()
{
Application.Run(new LineCapDemo());
}
private void LineCapDemo_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
Pen thePen = new Pen(Color.Black, 10);
int yOffSet = 10;
Array obj = Enum.GetValues(typeof(LineCap));
for(int x = 0; x < obj.Length; x++)
{
LineCap temp = (LineCap)obj.GetValue(x);
thePen.StartCap = temp;
thePen.EndCap = temp;
g.DrawString(temp.ToString(), new Font("Times New Roman", 10), new SolidBrush(Color.Black), 0, yOffSet);
g.DrawLine(thePen, 100, yOffSet, Width - 50, yOffSet);
yOffSet += 40;
}
}
private void LineCapDemo_Resize(object sender, System.EventArgs e)
{
Invalidate();
}
}</source>
Dashed pen
<source lang="csharp">using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class PenCustomDash : System.Windows.Forms.Form {
private System.ruponentModel.Container components = null;
public PenCustomDash()
{
InitializeComponent();
SetStyle(ControlStyles.ResizeRedraw, true);
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(211, 104);
this.Text = "A Form with Style!";
this.Paint += new System.Windows.Forms.PaintEventHandler(this.PenCustomDash_Paint);
}
[STAThread]
static void Main()
{
Application.Run(new PenCustomDash());
}
private void PenCustomDash_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Pen customDashPen = new Pen(Color.Black, 10);
float[] myDashes = {5.0f, 2.0f, 1.0f, 3.0f};
customDashPen.DashPattern = myDashes;
e.Graphics.DrawRectangle(customDashPen, ClientRectangle);
}
}</source>
Disposal Errors
<source lang="csharp">using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Windows.Forms;
class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
Pen p = Pens.Black;
p.Dispose();
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 271);
this.Name = "Form1";
this.Text = "Form1";
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
}</source>
LineCap.ArrowAnchor
<source lang="csharp">using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form {
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
Pen p = new Pen(Color.Brown, 15);
// set the Arrow
p.StartCap = LineCap.ArrowAnchor;
p.EndCap = LineCap.ArrowAnchor;
g.DrawLine(p, 30, 30, Width - 50, 30);
}
}</source>
LineCap.Round
<source lang="csharp">using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form {
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
Pen p = new Pen(Color.Brown, 15);
// round ends
p.StartCap = LineCap.Round;
p.EndCap = LineCap.Round;
g.DrawLine(p, 30, 80, Width - 50, 80);
}
}</source>
LineCap.RoundAnchor
<source lang="csharp">using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form {
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
Pen p = new Pen(Color.Brown, 15);
// round Anchor
p.StartCap = LineCap.RoundAnchor;
p.EndCap = LineCap.RoundAnchor;
g.DrawLine(p, 30, 120, Width - 50, 120);
}
}</source>
LineCap.SquareAnchor
<source lang="csharp">using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form {
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
Pen p = new Pen(Color.Brown, 15);
// square Anchor
p.StartCap = LineCap.SquareAnchor;
p.EndCap = LineCap.SquareAnchor;
g.DrawLine(p, 30, 190, Width - 50, 190);
}
}</source>
LineCap.Triangle
<source lang="csharp">using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D; public class Form1 : System.Windows.Forms.Form {
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
Pen p = new Pen(Color.Brown, 15);
// triangle
p.StartCap = LineCap.Triangle;
p.EndCap = LineCap.Triangle;
g.DrawLine(p, 30, 150, Width - 50, 150);
}
}</source>
Make a big blue pen
<source lang="csharp">using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class PenBigBlue : System.Windows.Forms.Form {
private System.ruponentModel.Container components = null;
public PenBigBlue()
{
InitializeComponent();
SetStyle(ControlStyles.ResizeRedraw, true);
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.PenBigBlue_Paint);
}
[STAThread]
static void Main()
{
Application.Run(new PenBigBlue());
}
private void PenBigBlue_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
// Make a big blue pen.
Pen bluePen = new Pen(Color.Blue, 20);
g.DrawEllipse(bluePen, 10, 10, 100, 100);
}
}</source>
PenAlignment.Inset
<source lang="csharp">using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Drawing.Drawing2D; using System.Text; using System.Windows.Forms; public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
Pen p = new Pen(Color.Black, 3);
p.Alignment = PenAlignment.Inset;
g.DrawRectangle(p, 3, 3, 8, 7);
p.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}</source>
Pens: Firebrick
<source lang="csharp">using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class PensFirebrick : System.Windows.Forms.Form {
private System.ruponentModel.Container components = null;
public PensFirebrick()
{
InitializeComponent();
SetStyle(ControlStyles.ResizeRedraw, true);
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.PensFirebrick_Paint);
}
[STAThread]
static void Main()
{
Application.Run(new PensFirebrick());
}
private void PensFirebrick_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
Pen pen2 = Pens.Firebrick;
g.DrawLine(pen2, 10, 130, 110, 130);
}
}</source>
Pen start and end cap
<source lang="csharp">using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class PenStartEndCap : System.Windows.Forms.Form {
public PenStartEndCap()
{
this.BackColor = System.Drawing.Color.White;
this.ClientSize = new System.Drawing.Size(400, 400);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.PenStartEndCap_Paint);
}
static void Main()
{
Application.Run(new PenStartEndCap());
}
private void PenStartEndCap_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
Pen p2 = new Pen(Color.Gray, 7);
p2.EndCap = LineCap.Round;
p2.StartCap = LineCap.ArrowAnchor;
g.DrawLine(p2, 25, 35, 25, 365);
g.DrawLine(p2, 35, 375, 365, 375);
g.DrawLine(p2, 375, 365, 375, 35);
g.DrawLine(p2, 365, 25, 35, 25);
}
}</source>
Use Pen directly
<source lang="csharp">using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class PensDirectly : System.Windows.Forms.Form {
private System.ruponentModel.Container components = null;
public PensDirectly()
{
InitializeComponent();
SetStyle(ControlStyles.ResizeRedraw, true);
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.PensDirectly_Paint);
}
[STAThread]
static void Main()
{
Application.Run(new PensDirectly());
}
private void PensDirectly_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
g.DrawPie(Pens.Black, 150, 10, 120, 150, 90, 80);
}
}</source>
