110,538
社区成员
发帖
与我相关
我的任务
分享winForm 绘图
我在Form窗口上放了一个TabControl控件怎么在tabControl控件上 绘制一条直线。小弟初学，小菜鸟一个希望各位朋友帮忙
...全文
请发表友善的回复…
发表回复
林子的传智 2013-03-10
- 打赏
- 举报
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace 老师的画图工具
{
public partial class Form1 : Form
{
Point p1;
Point p2;
Point pOver;
Graphics gShow;
Pen pen;
bool isOver;
Bitmap bitShow;
Graphics gSave;
int type = 0;
public Form1()
{
InitializeComponent();
gShow = pictureBox1.CreateGraphics();
pen = new Pen(Color.Black);
}
private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)
{
pictureBox1.Image = null;
}
private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "图片|*.jpg";
openFileDialog1.ShowDialog();
string path = openFileDialog1.FileName;
FileStream fs = new FileStream(path, FileMode.Open);
bitShow = new Bitmap(fs);
fs.Close();
pictureBox1.Image = bitShow;
gSave = Graphics.FromImage(bitShow);
}
private void 保存ToolStripMenuItem_Click(object sender, EventArgs e)
{
saveFileDialog1.ShowDialog();
string path = saveFileDialog1.FileName;
bitShow.Save(path);
}
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
isOver = true;
p1.X = e.X;
p1.Y = e.Y;
}
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
if (isOver)
{
if (type == 0)
{
p2.X = e.X;
p2.Y = e.Y;
gShow.DrawLine(pen, p1, p2);
gSave.DrawLine(pen, p1, p2);
p1.X = e.X;
p1.Y = e.Y;
}
}
}
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
isOver = false;
pOver.X = e.X;
pOver.Y = e.Y;
if (type == 1)
{
gShow.DrawEllipse(pen, p1.X, p1.Y, (pOver.X - p1.X), (pOver.Y - p1.Y));
}
}
}
}
这是在pictureBox1上画的。。。你可以试着修改下
xiwangdege 2013-03-09
- 打赏
- 举报
已解决 谢谢各位了
wjx630216732 2013-03-09
- 打赏
- 举报
用这个类：Graphics
xiwangdege 2013-03-09
- 打赏
- 举报
大侠 那怎么解决呀
lin1232147 2013-03-09
- 打赏
- 举报
bang 你顶1下。。
