www.pudn.com > GDIPlusCF.zip > PenDemo.cs

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Text; 
using System.Windows.Forms; 
using OpenNETCF.GDIPlus; 
 
namespace TestApp1 
{ 
    public partial class PenDemo : Form 
    { 
        PenPlus penSolid, penHatch, penSolidTrans, penSolidCustomCap, penDash, penGradient; 
        SolidBrushPlus brSolid; 
        HatchBrush brHatch; 
        LinearGradientBrush brGrad; 
 
        public PenDemo() 
        { 
            InitializeComponent(); 
        } 
 
        private void PenDemo_Load(object sender, EventArgs e) 
        { 
            CreateObjects(); 
        } 
 
        private void PenDemo_Closing(object sender, CancelEventArgs e) 
        { 
            DestroyObjects(); 
        } 
 
        private void CreateObjects() 
        { 
 
 
            brSolid = new SolidBrushPlus(Color.CornflowerBlue); 
            penSolid = new PenPlus(Color.Red, 10); 
            penSolid.SetEndCap(LineCap.LineCapRound); 
            penSolid.SetStartCap(LineCap.LineCapArrowAnchor); 
 
            brHatch = new HatchBrush(HatchStyle.HatchStyle25Percent,  
                Color.Black, Color.White); 
            penHatch = new PenPlus(brHatch, 10); 
 
            penSolidTrans = new PenPlus(Color.FromArgb(-0x5f7f7f7f), 10); 
             
            penSolidCustomCap = new PenPlus(Color.Black, 20); 
            GraphicsPath path = new GraphicsPath(FillMode.FillModeAlternate); 
            path.AddEllipse(-0.5f, -1.5f, 1, 3); 
            CustomLineCap cap = new CustomLineCap(null, path, LineCap.LineCapFlat, 0); 
            penSolidCustomCap.SetCustomEndCap(cap); 
             
            penDash = new PenPlus(Color.Black, 5); 
            penDash.SetDashStyle(DashStyle.DashStyleDot); 
             
            brGrad = new LinearGradientBrush( 
                new GpPointF(0, 0), new GpPointF(100, 100), 
                Color.Black, Color.White); 
            penGradient = new PenPlus(brGrad, 30); 
        } 
 
        private void DestroyObjects() 
        { 
            brSolid.Dispose(); 
            brHatch.Dispose(); 
             
        } 
 
        private void Draw(Graphics graphics, GraphicsPlus g) 
        { 
            StringFormat sf = new StringFormat(); 
            sf.LineAlignment = sf.Alignment = System.Drawing.StringAlignment.Center; 
            int deltaH = ClientRectangle.Height / 8; 
            GpRectF rc = new GpRectF(0, 0, ClientRectangle.Width, deltaH); 
            RectangleF rcf = new RectangleF(0, 0, ClientRectangle.Width, deltaH); 
 
            using (SolidBrush brText = new SolidBrush(Color.Black)) 
            using (Font fnt = new Font("Tahoma", 9, System.Drawing.FontStyle.Bold)) 
            { 
                penSolid.SetWidth(15); 
                g.DrawLine(penSolid, 5, rcf.Top + 10, rc.Width - 10, rcf.Top + 10); 
                graphics.DrawString("Solid with caps", fnt, brText, rcf, sf); 
                rcf.Y += deltaH; rc.Offset(0, deltaH); 
 
                SmoothingMode mode = g.GetSmoothingMode(); 
                g.SetSmoothingMode(SmoothingMode.SmoothingModeAntiAlias); 
 
                penSolid.SetColor(Color.Blue); 
                g.DrawLine(penSolid, 5, rcf.Top + 10, rc.Width - 10, rcf.Top + 10); 
                graphics.DrawString("Solid with caps and anitalising", fnt, brText, rcf, sf); 
                rcf.Y += deltaH; rc.Offset(0, deltaH); 
 
                g.DrawLine(penHatch, 5, rcf.Top + 10, rc.Width - 10, rcf.Top + 10); 
                graphics.DrawString("Hatched", fnt, brText, rcf, sf); 
                rcf.Y += deltaH; rc.Offset(0, deltaH); 
 
                penSolidTrans.SetWidth(20); 
                penSolidTrans.SetLineCap(LineCap.LineCapRound, LineCap.LineCapDiamondAnchor, DashCap.DashCapRound); 
                graphics.DrawString("Solid with transparency", fnt, brText, rcf, sf); 
                g.DrawLine(penSolidTrans, 15, rcf.Top + 10, rc.Width - 30, rcf.Top + 10); 
                rcf.Y += deltaH; rc.Offset(0, deltaH); 
 
                g.SetSmoothingMode(SmoothingMode.SmoothingModeAntiAlias); 
                brText.Color = Color.White; 
                g.DrawLine(penSolidCustomCap, 15, rcf.Top + 15, rc.Width - 50, rcf.Top + 15); 
                graphics.DrawString("Custom cap", fnt, brText, rcf, sf); 
                rcf.Y += deltaH; rc.Offset(0, deltaH); 
                g.SetSmoothingMode(mode); 
 
                brText.Color = Color.Gray; 
                g.DrawLine(penDash, 5, rcf.Top + 10, rc.Width - 10, rcf.Top + 10); 
                graphics.DrawString("Dash (round)", fnt, brText, rcf, sf); 
                rcf.Y += deltaH; rc.Offset(0, deltaH); 
 
                brText.Color = Color.White; 
                g.DrawLine(penGradient, 15, rcf.Top + 20, rc.Width - 30, rcf.Top + 20); 
                graphics.DrawString("Gradient brush-based", fnt, brText, rcf, sf); 
                rcf.Y += deltaH; rc.Offset(0, deltaH); 
 
            } 
        } 
 
        protected override void OnPaint(PaintEventArgs e) 
        { 
            IntPtr hdc = e.Graphics.GetHdc(); 
            using (GraphicsPlus g = new GraphicsPlus(hdc)) 
                Draw(e.Graphics, g); 
            e.Graphics.ReleaseHdc(hdc); 
        } 
    } 
}