C#实现的GDI+时钟

using System;

002	using System.Data;

003	using System.Drawing;

004	using System.Drawing.Drawing2D;

005	class Clock

006

{

007	private Point mickeyMouse = new Point(0, 0);

008	private void Form1_Paint(object sender, PaintEventArgs e)

009

{

010	DrawClock(e.Graphics);

011	timer1.Start();

012

}

013

014	private void DrawClock(Graphics g)

015

{

016	///centre(120, 130);

017	Rectangle outRect = new Rectangle(0, 0, 240, 260);

018	Rectangle midRect = new Rectangle(7, 7, 226, 246);

019	Rectangle inRect = new Rectangle(10, 10, 220, 240);

020

021	LinearGradientBrush outlBlueBrush = new LinearGradientBrush(outRect, Color.FromA#000064,

022	Color.FromA#0000ff, LinearGradientMode.BackwardDiagonal);

023	LinearGradientBrush midlBlueBrush = new LinearGradientBrush(midRect, Color.FromA#0000ff,

024	Color.FromA#000064, LinearGradientMode.BackwardDiagonal);

025	LinearGradientBrush inlBlueBrush = new LinearGradientBrush(inRect, Color.FromA#000064,

026	Color.FromA#0000ff, LinearGradientMode.BackwardDiagonal);

027

028	g.FillEllipse(outlBlueBrush, outRect);

029	g.FillEllipse(midlBlueBrush, midRect);

030	g.FillEllipse(inlBlueBrush, inRect);

031	outlBlueBrush.Dispose();

032	midlBlueBrush.Dispose();

033	inlBlueBrush.Dispose();

034	Font myFont = new Font("Arial", 20, FontStyle.Bold);

035	SolidBrush whiteBrush = new SolidBrush(Color.White);

036	g.DrawString("12", myFont, whiteBrush, 100, 10);

037	g.DrawString("6", myFont, whiteBrush, 110, 223);

038	g.DrawString("3", myFont, whiteBrush, 210, 120);

039	g.DrawString("9", myFont, whiteBrush, 10, 120);

040	g.DrawString("1", myFont, whiteBrush, 160, 26);

041	g.DrawString("2", myFont, whiteBrush, 194, 64);

042	g.DrawString("5", myFont, whiteBrush, 156, 210);

043	g.DrawString("4", myFont, whiteBrush, 192, 174);

044	g.DrawString("11", myFont, whiteBrush, 55, 28);

045	g.DrawString("10", myFont, whiteBrush, 22, 66);

046	g.DrawString("7", myFont, whiteBrush, 64, 210);

047	g.DrawString("8", myFont, whiteBrush, 28, 174);

048	myFont.Dispose();

049	whiteBrush.Dispose();

050	//DateTime;

051	g.TranslateTransform(120, 130, MatrixOrder.Append);

052	Pen hourPen = new Pen(Color.White, 6);

053	hourPen.SetLineCap(LineCap.RoundAnchor, LineCap.ArrowAnchor, DashCap.Flat);

054	Pen minutePen = new Pen(Color.White, 4);

055	minutePen.SetLineCap(LineCap.RoundAnchor, LineCap.ArrowAnchor, DashCap.Flat);

056	Pen secondPen = new Pen(Color.Red, 2);

057	int sec = DateTime.Now.Second;

058	int min = DateTime.Now.Minute;

059	int hour = DateTime.Now.Hour;

060	double secondAngle = 2.0 * Math.PI * sec / 60.0;

061	double minuteAngle = 2.0 * Math.PI * (min + sec / 60.0) / 60.0;

062	double hourAngle = 2.0 * Math.PI * (hour + min / 60.0) / 12.0;

063	Point centre = new Point(0, 0);

064	Point hourHand = new Point((int)(40 * Math.Sin(hourAngle)),

065	(int)(-40 * Math.Cos(hourAngle)));

066	g.DrawLine(hourPen, centre, hourHand);

067

068	Point minHand = new Point((int)(80 * Math.Sin(minuteAngle)),

069	(int)(-80 * Math.Cos(minuteAngle)));

070	g.DrawLine(minutePen, centre, minHand);

071

072	Point secHand = new Point((int)(80 * Math.Sin(secondAngle)),

073	(int)(-80 * Math.Cos(secondAngle)));

074	g.DrawLine(secondPen, centre, secHand);

075

076	hourPen.Dispose();

077	minutePen.Dispose();

078	secondPen.Dispose();

079

}

080	private void timer1_Tick(object sender, EventArgs e)

081

{

082	this.Invalidate();

083

}

084	private void hideToolStripMenuItem_Click(object sender, EventArgs e)

085

{

086	if (contextMenuStrip1.Items[0].ToString() == "Hide")

087

{

088	this.Hide();

089	contextMenuStrip1.Items[0].Text = "Show";

090

return;

091

}

092

093	if (contextMenuStrip1.Items[0].ToString() == "Show")

094

{

095	this.Show();

096	contextMenuStrip1.Items[0].Text = "Hide";

097

return;

098

}

099

}

100	private void Form1_MouseDown(object sender, MouseEventArgs e)

101

{

102	mickeyMouse = new Point(-e.X, -e.Y);

103

}

104	private void Form1_MouseMove(object sender, MouseEventArgs e)

105

{

106	if (e.Button == MouseButtons.Left)

107

{

108	Point mousePos = Control.MousePosition;

109	mousePos.Offset(mickeyMouse.X, mickeyMouse.Y);

110	Location = mousePos;

111

}

112

}

113	private void notifyIcon1_DoubleClick(object sender, EventArgs e)

114

{

115	if (contextMenuStrip1.Items[0].ToString() == "Show")

116

{

117	this.Show();

118	contextMenuStrip1.Items[0].Text = "Hide";

119

return;

120

}

121

}

122

}