随意使用您自己程序的任何代码，任何有关以PDF格式保存的问题都将得到解答
我已经有一段时间遇到了问题，我想做的是以下几点：
1）可以上传和成像并显示该图像的程序 - ＆gt;使用代码
2）在此图像的顶部绘制线条，同时可以删除它们或稍后更改此行的2个点中的1个 - ＆gt;仍然要做，计划通过检查1）makelines var = false来执行此操作2）onclick鼠标位置靠近线点，如果是这样的话，将鼠标移动到线点，同时按住鼠标并将鼠标设置为鼠标x＆amp;收率
3）我想点击左边的图标，然后在上传的图片上绘制 - ＆gt;工作
4）问题！ - 当我在这个图像上绘制时，它会闪烁，以前绘制的线条和图标也是如此，那就是我将图像设置为面板背景，这样我就可以使用面板的绘制方法绘制它，并且我已经成功存储了线条和图标分为数组，而不是每次完成一条线或图标后，这将更新显示图像，最重要的是绘制的线条和图标组成阵列。它闪烁很多的事实是因为我已经使用Mousemove函数来查看将绘制线的位置以及图标的放置位置，并且为此我必须在mousemove上更新它但是这会导致所有线条，图标和背景，以便在我移动的时候像疯了一样轻弹。
这是我的代码，非常感谢任何可以帮助我正确指导的人//修复此问题或尝试。
这是一个视频，清楚地说明发生了什么和问题。
如果代码不清楚，如果有任何问题，请向我道歉。这是我父亲的工作项目，我通常会设计游戏，如果我犯了任何错误告诉我，我是C＃的新手！将不胜感激。
亲切的问候Jules Broeks 游戏技术学生 荷兰
视频：http://youtu.be/bL7a-Lewp4Q
如果您需要查看我的数组课程，请告诉我。
代码：
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.Media;
using System.Net;
using Microsoft.VisualBasic;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;
namespace JulesIsDeBeste
{
public partial class Form1 : Form
{
Bitmap newBitmap;
System.Drawing.Image file;
System.Drawing.Image image;
System.Drawing.Image symbol1, symbol2, symbol3, symbol4, symbol5, symbol6, symbol7, symbol8, symbol9, symbol10, symbol11, symbol12, symbol13, symbol14, symbol15;
System.Drawing.Image symbol31, symbol32, symbol33, symbol34, symbol35, symbol36, symbol37, symbol38, symbol39, symbol40, symbol41, symbol42, symbol43, symbol44, symbol45;
System.Drawing.Image symbol46, symbol47, symbol48, symbol49, symbol50, symbol51, symbol52, symbol53, symbol54, symbol55, symbol56, symbol57, symbol58, symbol59, symbol60;
System.Drawing.Image symbol61, symbol62, symbol63;
private bool mouse_down = false;
private Color col = Color.Black;
private bool makeLine = false;
int penwidth = 1;
Pen blackPen;
Bitmap bitmap;
int x1;
int y1;
int x2;
int y2;
LineClass array = new LineClass();
DrawIcon icon = new DrawIcon();
System.Drawing.Image selectedIcon;
private bool drawicon = false;
public Form1()
{
symbol1 = JulesIsDeBeste.Properties.Resources.dice;
symbol2 = JulesIsDeBeste.Properties.Resources.das;
InitializeComponent();
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
DialogResult dr = openFileDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
try
{
file = System.Drawing.Image.FromFile(openFileDialog1.FileName);
newBitmap = new Bitmap(openFileDialog1.FileName);
pictureBox1.Image = file;
pictureBox1.Height = panel1.Height;
pictureBox1.Width = panel1.Width;
pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
panel1.Height = file.Height;
panel1.Width = file.Width;
panel1.BackgroundImage = file;
bitmap = new Bitmap(panel1.Width, panel1.Height);
panel1.DrawToBitmap(bitmap, new System.Drawing.Rectangle(panel1.ClientSize.Width - panel1.Width, panel1.ClientSize.Height - panel1.Height, panel1.Width, panel1.Height));
pictureBox1.Hide();
}
catch (Exception)
{
MessageBox.Show("Verkeerde format, kies een Image file", " --> Error ! <-- ");
}
}
}
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
String filename = Microsoft.VisualBasic.Interaction.InputBox("Opslaan als : ", "Wat moet je toch zonder Jules !", "", 250, 250);
FolderBrowserDialog folderBrowserDialog1 = new FolderBrowserDialog();
//Choose the default start up folder
string selectedFolder = @"C:\Dev";
//Set that into the dialog
folderBrowserDialog1.SelectedPath = selectedFolder;
if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
{
//Grab the folder that was chosen
selectedFolder = folderBrowserDialog1.SelectedPath;
// The user selected a folder and pressed the OK button.
// We print the number of files found.
string[] files = Directory.GetFiles(selectedFolder);
}
String abc = filename + ".pdf";
panel1.DrawToBitmap(bitmap, new System.Drawing.Rectangle(panel1.ClientSize.Width - panel1.Width, panel1.ClientSize.Height - panel1.Height, panel1.Width, panel1.Height));
image = bitmap;
try
{
Document doc = new Document();
doc.SetPageSize(new iTextSharp.text.Rectangle((panel1.ClientSize.Width - panel1.Width), panel1.ClientSize.Height - panel1.Height, panel1.Width, panel1.Height, 0));
PdfWriter.GetInstance(doc, new FileStream(selectedFolder + "/" + abc, FileMode.Create));
doc.Open();
iTextSharp.text.Image pdfImage = iTextSharp.text.Image.GetInstance(image, System.Drawing.Imaging.ImageFormat.Jpeg);
doc.Add(pdfImage);
doc.Close();
MessageBox.Show("Succesfully Saved At " + selectedFolder);
}
catch (Exception)
{
//Log error;
}
}
private void panel1_MouseDown(object sender, MouseEventArgs e)
{
x1 = e.X;
y1 = e.Y;
mouse_down = true;
}
private void panel1_MouseUp(object sender, MouseEventArgs e)
{
mouse_down = false;
if (makeLine)
{
array.addToArray(x1, y1, x2, y2, col, penwidth);
}
if (drawicon)
{
icon.addToArray(x2, y2, selectedIcon);
panel1.Refresh();
}
}
private void panel1_MouseMove(object sender, MouseEventArgs e)
{
toolStripStatusLabel1.Text = e.X + "," + e.Y;
if (mouse_down == true)
{
try
{
x2 = e.X;
y2 = e.Y;
panel1.Refresh();
}
catch (Exception)
{ }
}
}
private void button1_Click(object sender, EventArgs e)
{
colorDialog1.ShowDialog();
col = colorDialog1.Color;
}
private void panel1_Paint(object sender, PaintEventArgs e)
{
if (makeLine && !drawicon)
{
try
{
blackPen = new Pen(col, penwidth);
e.Graphics.DrawLine(blackPen, x1, y1, x2, y2);
for (int i = 0; array.linesCount() > i; i++)
{
blackPen = new Pen(array.getColor(i), array.getPenWidth(i));
e.Graphics.DrawLine(blackPen, array.getPointsX1(i), array.getPointsY1(i), array.getPointsX2(i), array.getPointsY2(i));
}
for (int i = 0; icon.iconCount() > i; i++)
{
e.Graphics.DrawImage(icon.getIcon(i), icon.getX(i), icon.getY(i));
}
blackPen = new Pen(col, penwidth);
}
catch
{ }
}
if (!makeLine && drawicon)
{
try
{
e.Graphics.DrawImage(selectedIcon, x2, y2);
for (int i = 0; array.linesCount() > i; i++)
{
blackPen = new Pen(array.getColor(i), array.getPenWidth(i));
e.Graphics.DrawLine(blackPen, array.getPointsX1(i), array.getPointsY1(i), array.getPointsX2(i), array.getPointsY2(i));
}
for (int i = 0; icon.iconCount() > i; i++)
{
e.Graphics.DrawImage(icon.getIcon(i), icon.getX(i), icon.getY(i));
}
}
catch
{ }
}
if (!makeLine && !drawicon)
{ }
}
private void button2_Click(object sender, EventArgs e)
{
if (!makeLine)
{
makeLine = true;
drawicon = false;
pictureBox2.BackColor = Color.Honeydew;
button2.ForeColor = Color.Red;
}
else
{
makeLine = false;
button2.ForeColor = Color.Black;
}
}
private void trackBar1_Scroll(object sender, EventArgs e)
{
penwidth = trackBar1.Value + 1;
}
private void splitContainer1_Panel1_Paint(object sender, PaintEventArgs e)
{
splitContainer1.Panel1MinSize = 250;
splitContainer1.Panel1.AutoScroll = true;
}
private void pictureBox2_Click(object sender, EventArgs e)
{
selectedIcon = symbol1;
if (!drawicon)
{
drawicon = true;
makeLine = false;
button2.ForeColor = Color.Black;
pictureBox2.BackColor = Color.Aquamarine;
}
else
{
drawicon = false;
pictureBox2.BackColor = Color.Honeydew;
}
}
}
}