C # Draw a circular clock,

C # Draw a circular clock,

This article is modified after the author references some cases:

The Reference Links are as follows:

Http://blog.csdn.net/xuemoyao/article/details/8001113

Http://wenku.baidu.com/view/1221d6522f60ddccda38a0e7

(1) Final Results

 

(2) Program Implementation Analysis:

Use the Paint event to implement the painting, and then add a timer to set it to 1000 milliseconds.

(3) specific methods

Add Time1 to Form (set the size to 300*300), Enabled to true, and Interval to 1000

Add

This. Paint + = new System. Windows. Forms. PaintEventHandler (this. Form1_Paint );

Add a function under the Form1 class in Form1.cs

Private void Form_Paint (Object Sender, PaintEventArgs e)

{

Graphics g = e. Graphics; // defines g as the canvas of the Form Control.

Int r = 100;

// Draw a digital clock

Rectangle r1 = new Rectangle );

// The parameters are the coordinates, width, and length of the rectangle in the upper left corner.

G. FillRectangle (Brushes. Chocolate, r1); // fill color

Int ss = DateTime. Now. Second;

Int mm = DateTime. Now. Minute;

Int hh = DateTime. Now. Hour;

String s = Convert. ToString (ss );

String m = Convert. ToString (mm );

String h = Convert. ToString (hh );

If (ss> = 0 & ss <= 9)

S = "0" + s;

If (mm> = 0 & mm <= 9)

M = "0" + m;

If (hh> = 0 & hh <= 9)

H = "0" + h;

Font f1 = new Font ("", 12, FontStyle. Bold );

StringFormat sf1 = new StringFormat ();

SolidBrush s1 = new SolidBrush (Color. White );

G. Drawstring ("Current Time" + h + ":" + m + ":" + s, f1, s1, r1, sf1 );

G. DrawString ("Current Time" + h + ":" + m + ":" + s, f1, s1, r1, sf1 );

// Draw a circular contour

G. FillEllipse (Brushes. White, 50, 50, 200,200)

G. DrawEllipse (New Pen (Color. Red, 2), 208,208 );

G. DrawEllipse (new Pen (Color. DarkGray, 1), 50, 50, 200,200 );

// Draw a digital scale

G. ResetTransform ();

G. TranslateTransform (150,150); // reposition coordinates

Font drawFont = new Font ("Arial", 12 );

SolidBrush drawBrush = new SolidBrush (Color. Black );

E. Graphics. DrawString ("6", drawFont, drawBrush,-7, 70 );

E. Graphics. DrawString ("12", drawFont, drawBrush,-9,-80 );

E. Graphics. DrawString ("3", drawFont, drawBrush, 70,-7 );

E. Graphics. DrawString ("9", drawFont, drawBrush,-80,-7 );

// Draw the scale

For (int z = 0; z <60; z ++)

{

G. SmoothingMode = System. Drawing. Drawing2D

. SmoothingMode. HighQuality;

// Make the drawn pointer smoother and higher quality

G. ResetTransform;

G. TranslateTransform (150,150); // modify the coordinate origin

G. RotateYransform (z * 5); // rotate, 6 degrees per second

If (z % 5 = 0)

G = DrawLine (new Pen (Color. Black, 3.0f). R-12, 0, R-5, 0 );

// Hourly Scale

Else

G. DrawLine (new Pen (Color. Black, 1.5f), r-8, 0, R-5, 0 );

// Standard minutely Scale

}

// Draw seconds

G. ResetTransform (); // restore the default status

G. TranslateTransform (150,150 );

G. RotateTransform (ss x 6 + 270 );

// Take the horizontal line as the X axis and start to rotate from the vertical top. Each rotation is 6 degrees.

Pen secPen = new Pen (Color. Red, 1 );

SecPen. StartCap = System. Drawing. Drawing2D. LineCap. RoundAnchor;

// Draw a line, starting with a dot

SecPen. EndCap = System. Drawing. Drawing2D. LineCap. ArrowAnchor;

// Draw a line, ending with an arrow

G. DrawLine (secPen,); // 65 indicates the length of the Line

// Draw a sub-needle

G. ResetTransform ();

G. TranslateTransform (150,150 );

G. RotateTransform (mm * 6 + 270 );

Pen minPen = new Pen (Color. Blue, 2 );

MinPen. StartCap = System. Drawing. Drawing2D. LineCap. RoundAnchor;

MinPen. EndCap = System. Drawing. Drawing2D. LineCap. ArrowAnchor;

G. DrawLine (minPen, 0, 0, 0, 0 );

// Draw the hour hand

G. ResetTransform ();

G. TranslateTransform (150,150 );

G. RotateTransform (hh * 30 + mm * 1/2 + 270 );

Pen hourPen = new Pen (Color. Black, 3 );

HourPen. EndCap = System. Drawing. Drawing2D. LineCap. ArrowAnchor;

G. DrawLine (hourPen, 0, 0, 35, 0 );

}

Time1 RESPONSE event

Private void timereffectick (object sender, EventArgs e)

{

Invalidate ();

}