就当活跃活跃气氛吧~
sf
不好意思.原来是技术帖.
路过
强大
高手们不吝啬的话 用sql写写吧
C# code:
//c#的
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace WindowsApplication1
{
public partial class Form1 : Form
{
int x1, x2, y1, y2;
Boolean ht = false;//判断是否按下鼠标左键，默认为没有按键
Boolean dr = true; //判断是否已经显示曲线，默认为显示
public Form1()
{
InitializeComponent();
}
/// <summary>
/// 鼠标单击事件方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
//sinline();
x1 = e.X; //获取点击处的坐标X值
y1 = e.Y; //获取点击处的坐标Y值
ht = true; //赋值为真，证明已经按下左键
if (dr == true) //判断显示曲线的条件是否为真，如果为真则清楚鼠标所画的各种图形
{
Graphics g = this.Crea
