实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.IO;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ScreenshortDemo
{
public partial class MainForm : Form
{
private ScreenForm fs = new ScreenForm();
private Bitmap curBitmap;
public MainForm()
{
InitializeComponent();
}
private void MainForm_load(object sender,EventArgs e)
{
fs.ScreenShotOk = new EventHandler(ScreenShortOk_Click);
}
private void ScreenShortOk_Click(object sender,EventArgs e)
{
Bitmap bmp = new Bitmap(fs.End.X - fs.Start.X, fs.End.Y - fs.Start.Y);
using (Graphics g = Graphics.FromImage(bmp))
{
int w = fs.End.X - fs.Start.X;
int h = fs.End.Y - fs.Start.Y;
Rectangle destRect = new Rectangle(0, 0, w 1, h 1);
Rectangle srcRect = new Rectangle(fs.Start.X, fs.Start.Y, w 1, h 1);
g.DrawImage(curBitmap, destRect, srcRect, GraphicsUnit.Pixel);
}
this.pictureBox1.Image = bmp;
this.Show();
}
public Bitmap GetScreen()
{
Rectangle ScreenArea = Screen.GetWorkingArea(this);
Bitmap bmp = new Bitmap(ScreenArea.Width, ScreenArea.Height);
using (Graphics g = Graphics.FromImage(bmp))
{
g.CopyFromScreen(0, 0, 0, 0, new Size(ScreenArea.Width, ScreenArea.Height));
}
return bmp;
}
#region 菜单事件
///新建截图
///
private void SMINEW_Click(object sender,EventArgs e)
{
tsbSave_Click(sender, e);
}
///菜单栏发送
///
private void SMISEND_Click(object sender,EventArgs e)
{
MessageBox.Show("未实现");
}
/// <summary>
/// 菜单栏退出
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void SMIEXIT_Click(object sender,EventArgs e)
{
if(MessageBox.Show ("are you sure to exit?","Info",MessageBoxButtons.OKCancel )==DialogResult.OK)
{
this.Close();
}
}
///菜单栏复制
///
private void SMICOPY_Click(object sender,EventArgs e)
{
tsbCopy_Click(sender, e);
}
///
private void SMIPEN_Click(object sender,EventArgs e)
{
MessageBox.Show("若使用此功能，请点击工具栏按钮！！！");
}
private void SMILIGHTPEN_Click(object sender,EventArgs e)
{
tsbLightPen_Click(sender, e);
}
private void SMIERASER_Click(object sender,EventArgs e)
{
tsbEraser_Click(sender, e);
}
private void SMIOPERATION_Click(object sender,EventArgs e)
{
MessageBox.Show("还未实现");
}
private void SMIHELP_Clock(object sender,EventArgs e)
{
MessageBox.Show("还未实现！");
}
/// <summary>
/// /////////////////////////////////////////////////////////////////////////
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void SMIABOUT_Click(object sender,EventArgs e)
{
}
#endregion
#region 鼠标事件
///鼠标按下
///
private void pictureBox_MouseDown(object sender,MouseEventArgs e)
{
if (e.Button == MouseButtons.Left && this.pictureBox1.StartDraw == true)
{
this.pictureBox1.OnMouseDown(e.Location);
}
}
///鼠标弹起
///
private void pictureBox_Mouse_Up(object sender,MouseEventArgs e)
{
if(e.Button ==MouseButtons.Left &&this.pictureBox1.StartDraw==true )
{
this.pictureBox1.OnMouseUp(e.Location);
}
}
///鼠标移动
///
private void pictureBox_Mouse_Move(object sender,MouseEventArgs e)
{
if(e.Button ==MouseButtons.Left&&this.pictureBox1.StartDraw==true )
{
this.pictureBox1.SetPointAndRefresh(e.Location);
}
}
#endregion
#region 工具栏事件
/// <summary>
/// 新建截图
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsbNew_Click(object sender, EventArgs e)
{
this.Hide();//隐藏当前
this.pictureBox1.LineHistory.Clear();//清除绘制的历史线条
this.pictureBox1.RectHistory.Clear();
this.curBitmap = GetScreen();
fs.BackgroundImage = this.curBitmap;
fs.StartPosition = FormStartPosition.Manual;//起始位置
fs.ShowDialog();
}
/// <summary>
/// 保存功能
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsbSave_Click(object sender, EventArgs e)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.AddExtension = true;
sfd.DefaultExt = "png";
sfd.Filter = "PNG图片|*.png|JPG图片|*.jpg";
sfd.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
if (sfd.ShowDialog() == DialogResult.OK)
{
string fileName = sfd.FileName;
Image image = this.pictureBox1.Image;
using (Graphics g = Graphics.FromImage(image))
{
this.pictureBox1.DrawHistory(g);
}
image.Save(fileName);
}
}
/// <summary>
/// 复制功能
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsbCopy_Click(object sender, EventArgs e)
{
if (this.pictureBox1.Image != null)
{
Clipboard.SetDataObject(this.pictureBox1.Image);
MessageBox.Show("已复制到剪贴板！");
}
}
private void tsddbPen_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
var item = e.ClickedItem;
if (item.Selected)
{
Color color = Color.FromName(item.Tag.ToString());
this.toolStripSplitButton1.BackColor = color;
this.pictureBox1.SetPen(color);
}
}
/// <summary>
/// 荧光笔
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsbLightPen_Click(object sender, EventArgs e)
{
this.pictureBox1.SetLightPen();
}
/// <summary>
/// 用图片生成指针样式
/// </summary>
/// <param name="cursor"></param>
/// <param name="hotPoint"></param>
public void SetCursor(Bitmap cursor, Point hotPoint)
{
int hotX = hotPoint.X;
int hotY = hotPoint.Y;
Bitmap myNewCursor = new Bitmap(cursor.Width * 2 - hotX, cursor.Height * 2 - hotY);
Graphics g = Graphics.FromImage(myNewCursor);
g.Clear(Color.FromArgb(0, 0, 0, 0));
g.DrawImage(cursor, cursor.Width - hotX, cursor.Height - hotY, cursor.Width,
cursor.Height);
this.Cursor = new Cursor(myNewCursor.GetHicon());
g.Dispose();
myNewCursor.Dispose();
}
private void tsbDefault_Click(object sender, EventArgs e)
{
this.pictureBox1.SetDefault();
}
/// <summary>
/// 橡皮擦功能
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsbEraser_Click(object sender, EventArgs e)
{
this.pictureBox1.SetEarser();
}
/// <summary>
/// 绘制矩形
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsbRectangle_Click(object sender, EventArgs e)
{
this.pictureBox1.SetRectangle();
}
#endregion
private void 文件ToolStripMenuItem_Click(object sender, EventArgs e)
{
}
}
}
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