c# 制作闹钟示例
1. Form1窗体的属性 this.FormBorderStyle = FormBorderStyle.None;
2.添加事件
private void MyDrawClock(int h, int m, int s)
{
Graphics g = this.CreateGraphics();
Rectangle rect = this.ClientRectangle;
this.FormBorderStyle = FormBorderStyle.None;
g.Clear(Color.White);
Pen myPen = new Pen(Color.Black, 1);
//g.DrawEllipse(myPen, this.ClientRectangle.Width / 2 - 50, this.ClientRectangle.Height / 2 - 50, 100, 100);//画表盘
Point centerPoints = new Point(this.ClientRectangle.Width / 2, this.ClientRectangle.Height / 2);//表的中心点
for (int i = 0; i < 12; i++)
{
Point sp12 = new Point((int)(centerPoints.X + (Math.Sin(i*5 * Math.PI / 30) * 44)), (int)(centerPoints.Y - (Math.Cos(i*5 * Math.PI / 30) * 44)));
Point sp121 = new Point((int)(sp12.X + (Math.Sin(i*5 * Math.PI / 30) * 5)), (int)(sp12.Y - (Math.Cos(i*5 * Math.PI / 30) * 5)));
myPen = new Pen(Color.Gray, 1);
if (i % 3 == 0)
{
myPen = new Pen(Color.Gray, 2);
}
g.DrawLine(myPen, sp12, sp121);
}
int hh = ((int)(m / 10)) + h * 5;
Point centerPoint = new Point(this.ClientRectangle.Width / 2, this.ClientRectangle.Height / 2);//表的中心点
//计算出秒针，时针，分针的另外一个商点
//Point secPoint = new Point((int)(centerPoint.X + (Math.Sin(s * Math.PI / 30) * 50)), (int)(centerPoint.Y - (Math.Cos(s * Math.PI / 30) * 50)));
Point minPoint = new Point((int)(centerPoint.X + (Math.Sin(m * Math.PI / 30) * 40)), (int)(centerPoint.Y - (Math.Cos(m * Math.PI / 30) * 40)));
//Point hourPoint = new Point((int)(centerPoint.X + (Math.Sin(h * Math.PI / 6) * 30) - m * Math.PI / 360), (int)(centerPoint.Y - (Math.Cos(h * Math.PI / 6) * 30) - m * Math.PI / 360));
Point newhourPoint = new Point((int)(centerPoint.X + (Math.Sin(hh * Math.PI / 30) * 30)),
(int)(centerPoint.Y - (Math.Cos(hh * Math.PI / 30) * 30)));
//以不同颜色和宽度绘制表针
//myPen = new Pen(Color.Red, 1);
//g.DrawLine(myPen, centerPoint, secPoint);
myPen = new Pen(Color.Orange, 1);
g.DrawLine(myPen, centerPoint, minPoint);
myPen = new Pen(Color.Goldenrod, 2);
g.DrawLine(myPen, centerPoint, newhourPoint);
g.FillEllipse(new SolidBrush(Color.OrangeRed), (this.ClientRectangle.Width / 2) - 3, (this.ClientRectangle.Height / 2) - 3, 6, 6);
}
protected override void OnPaint(PaintEventArgs e)
{
MyDrawClock(DateTime.Now.Hour, DateTime.Now.Minute, DateTime.Now.Second);
this.TransparencyKey = Color.White;
base.OnPaint(e);
}
private void timer1_Tick(object sender, EventArgs e)
{
MyDrawClock(DateTime.Now.Hour, DateTime.Now.Minute, DateTime.Now.Second);
}
3.添加拖动窗体事件
bool ismove = false;
int _x;
int _y;
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
_x = e.X;
_y = e.Y;
ismove = true;
}
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (ismove)
{
int dx = e.X - _x;
int dy = e.Y - _y;
this.Location = new Point(this.Left + dx, this.Top + dy);
}
}
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
ismove = false;
}
4.效果图:
还可以改装一下
替换方法代码:
private void MyDrawClock(int h, int m, int s)
{
Graphics g = this.CreateGraphics();
Rectangle rect = this.ClientRectangle;
g.Clear(Color.Green);
g.FillRectangle(new SolidBrush(Color.White), 60, 40, 34, 40);
g.DrawRectangle(new Pen(Color.Black), 60, 40, 34, 40);
g.DrawString("闹钟.exe", new Font("宋体", 10, FontStyle.Regular), new SolidBrush(Color.White), 50, 86);
Pen myPen = new Pen(Color.Black, 1);
//g.DrawEllipse(myPen, this.ClientRectangle.Width / 2 - 50, this.ClientRectangle.Height / 2 - 50, 100, 100);//画表盘
Point centerPoints = new Point(this.ClientRectangle.Width / 2, this.ClientRectangle.Height / 2);//表的中心点
for (int i = 0; i < 12; i++)
{
Point sp12 = new Point((int)(centerPoints.X + (Math.Sin(i*5 * Math.PI / 30) * 12)), (int)(centerPoints.Y - (Math.Cos(i*5 * Math.PI / 30) * 12)));
Point sp121 = new Point((int)(sp12.X + (Math.Sin(i*5 * Math.PI / 30) * 2)), (int)(sp12.Y - (Math.Cos(i*5 * Math.PI / 30) * 2)));
myPen = new Pen(Color.Gray, 1);
if (i % 3 == 0)
{
myPen = new Pen(Color.Black, 2);
}
g.DrawLine(myPen, sp12, sp121);
}
int hh = ((int)(m / 10)) + h * 5;
Point centerPoint = new Point(this.ClientRectangle.Width / 2, this.ClientRectangle.Height / 2);//表的中心点
//计算出秒针，时针，分针的另外一个商点
//Point secPoint = new Point((int)(centerPoint.X + (Math.Sin(s * Math.PI / 30) * 50)), (int)(centerPoint.Y - (Math.Cos(s * Math.PI / 30) * 50)));
Point minPoint = new Point((int)(centerPoint.X + (Math.Sin(m * Math.PI / 30) * 10)), (int)(centerPoint.Y - (Math.Cos(m * Math.PI / 30) * 10)));
//Point hourPoint = new Point((int)(centerPoint.X + (Math.Sin(h * Math.PI / 6) * 30) - m * Math.PI / 360), (int)(centerPoint.Y - (Math.Cos(h * Math.PI / 6) * 30) - m * Math.PI / 360));
Point newhourPoint = new Point((int)(centerPoint.X + (Math.Sin(hh * Math.PI / 30) * 8)),
(int)(centerPoint.Y - (Math.Cos(hh * Math.PI / 30) * 8)));
//以不同颜色和宽度绘制表针
//myPen = new Pen(Color.Red, 1);
//g.DrawLine(myPen, centerPoint, secPoint);
myPen = new Pen(Color.Orange, 1);
g.DrawLine(myPen, centerPoint, minPoint);
myPen = new Pen(Color.Goldenrod, 2);
g.DrawLine(myPen, centerPoint, newhourPoint);
g.FillEllipse(new SolidBrush(Color.OrangeRed), (this.ClientRectangle.Width / 2) - 1, (this.ClientRectangle.Height / 2) - 1, 3, 3);
}
效果图(模仿文件形式):
