I hope you can help me and this is a big code, so I'll try to explain it short. I'm making a program that can place logic gates and that can connect to each other, I'm using the OnPaint(PaintEventArgs e) method and I have troubles with connecting gates with a line. (the code is also really chaotic)
I add my gates in a List
private List<Tuple<Point, int>> droppedShapes = new List<Tuple<Point, int>>();
And my lines in
private List<Tuple<Point, Point>> allLines = new List<Tuple<Point, Point>>();
So I can save the x-y coordinates.
I use buttons to connect my lines, so on each end of connection I got a button that I can click. But I can only connect the 2 inputs of one component to each other.
Here is my code, I hope you can help me!
Here you can see how I draw my components and buttons.
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
screen.Clear(Color.Black);
Pen whitePen = new Pen(Color.White);
SolidBrush tealBrush = new SolidBrush(Color.Teal);
SolidBrush whiteBrush = new SolidBrush(Color.White);
SolidBrush yellowBrush = new SolidBrush(Color.Yellow);
SolidBrush grayBrush = new SolidBrush(Color.Gray);
SolidBrush redBrush = new SolidBrush(Color.Red);
foreach (var line in allLines)
{
screen.DrawLine(whitePen, line.Item1, line.Item2);
}
foreach (var pair in this.droppedShapes)
{
var shapeType = pair.Item2; // Reveal your own shape object here
var location = pair.Item1;
switch (shapeType) // Reveal your own shape object here
{
case 0:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("&", new Font(FontFamily.GenericMonospace, (float)18), whiteBrush, location.X - 11, location.Y - 13);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
newB = new Point(location.X - 25, location.Y + 2);
newB2 = new Point(location.X - 25, location.Y - 10);
newB3 = new Point(location.X + 20, location.Y - 3);
button1 = new Button();
button2 = new Button();
button3 = new Button();
button1.Size = new Size(8, 8);
button2.Size = new Size(8, 8);
button3.Size = new Size(8, 8);
newB.Offset(0, 0);
newB2.Offset(0, 0);
newB3.Offset(0, 0);
button1.Location = newB;
button2.Location = newB2;
button3.Location = newB3;
button1.Click += Button_Click1;
button2.Click += Button_Click2;
button3.Click += Button_Click3;
drawPanel.Controls.Add(button1);
drawPanel.Controls.Add(button2);
drawPanel.Controls.Add(button3);
if (jaOfNee == true)
{
screen.DrawString(pair.Item1.ToString(), new Font(FontFamily.GenericMonospace, (float) 6), whiteBrush, location.X - 25, location.Y - 25);
}
break;
case 1:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("1", new Font(FontFamily.GenericMonospace, (float)10), whiteBrush, location.X, location.Y - 9);
screen.DrawString(">", new Font(FontFamily.GenericMonospace, (float)8), whiteBrush, location.X - 8, location.Y - 10);
screen.DrawLine(whitePen, location.X + 1, location.Y + 1, location.X - 5, location.Y + 1);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
newB = new Point(location.X - 25, location.Y + 2);
newB2 = new Point(location.X - 25, location.Y - 10);
newB3 = new Point(location.X + 20, location.Y - 3);
button1 = new Button();
button2 = new Button();
button3 = new Button();
button1.Size = new Size(8, 8);
button2.Size = new Size(8, 8);
button3.Size = new Size(8, 8);
newB.Offset(0, 0);
newB2.Offset(0, 0);
newB3.Offset(0, 0);
button1.Location = newB;
button2.Location = newB2;
button3.Location = newB3;
button1.Click += Button_Click1;
button2.Click += Button_Click2;
button3.Click += Button_Click3;
drawPanel.Controls.Add(button1);
drawPanel.Controls.Add(button2);
drawPanel.Controls.Add(button3);
if (jaOfNee == true)
{
screen.DrawString(pair.Item1.ToString(), new Font(FontFamily.GenericMonospace, (float) 6), whiteBrush, location.X - 25, location.Y - 25);
}
break;
default:
break;
}
}
for (int i = drawPanel.Left - 5; i < drawPanel.Right + 10; i += 5)
{
for (int j = drawPanel.Top - 50; j < drawPanel.Bottom - 5; j += 5)
{
screen.FillEllipse(redBrush, i, j, 2, 2); //fills screen with a grid
}
}
// base.OnPaint(e);
// draw current location
if (currentLocation != null)
{
Point p = currentLocation.Value;
screen.FillEllipse(tealBrush, p.X + 1, p.Y, -4, -4);
}
drawPanel.CreateGraphics().DrawImage(backBuffer, 0, 0); //allows you to draw
}
}
(This is how I try to connect my 2 buttons)
foreach (var line in allLines)
{
screen.DrawLine(whitePen, line.Item1, line.Item2);
}
I don't use button 3 yet because I want to connect my inputs first so don't mind button 3.
This is how I try to save my X-Y coordinates.
private Point point1;
private Point point2;
private void Button_Click1(object sender, EventArgs e)
{
Console.WriteLine("button1");
point1 = button1.Location;
}
private void Button_Click2(object sender, EventArgs e)
{
Console.WriteLine("button2");
point2 = button2.Location;
}
private void Button_Click3(object sender, EventArgs e)
{
Console.WriteLine("button3");
}
private void DrawLine_Click(object sender, EventArgs e)
{
allLines.Add(new Tuple<Point, Point>(point1, point2));
}
After I press the button DrawLine it adds the location to the list.
Sorry for the horrible code.
I hope you understand my question a little bit more, it's really hard to explain my problem.
Related
I have written this code to print a lab report. It works fine but when I click on the print button and if the data of the report is more than one page it doesn't create the next page. Now I want the multiple-page setting I am totally confused about how to do it.
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
int position = 60;
for (int j = NoOfItemsTill; j < types.Count; j++)
{
e.Graphics.DrawString(types[j], new Font("Arial", 16, FontStyle.Bold), Brushes.Black, new Point(30, yposition - 30 + position));
e.Graphics.DrawImage(imae, 33, yposition + position, imae.Width, imae.Height);
e.Graphics.DrawString("Test", new Font("Arial", 12, FontStyle.Bold), Brushes.Black, new Point(40, yposition + 5 + position));
e.Graphics.DrawString("Normal Value", new Font("Arial", 12, FontStyle.Bold), Brushes.Black, new Point(310, yposition + 5 + position));
e.Graphics.DrawString("Result ", new Font("Arial", 12, FontStyle.Bold), Brushes.Black, new Point(560, yposition + 5 + position));
if (checkBox1showprise.Checked == true)
{
e.Graphics.DrawString("Price ", new Font("Arial", 12, FontStyle.Bold), Brushes.Black, new Point(700, yposition + 5 + position));
}
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
if (dataGridView1.Rows[i].Cells[1].Value.ToString() == types[j])
{
e.Graphics.DrawString(dataGridView1.Rows[i].Cells[2].Value.ToString(), new Font("Arial", 12, FontStyle.Regular), Brushes.Black, new Point(30, yposition + 50 + position));
e.Graphics.DrawString(dataGridView1.Rows[i].Cells[3].Value.ToString(), new Font("Arial", 12, FontStyle.Regular), Brushes.Black, new Point(310, yposition + 50 + position));
e.Graphics.DrawString(dataGridView1.Rows[i].Cells[4].Value.ToString(), new Font("Arial", 12, FontStyle.Regular), Brushes.Black, new Point(560, yposition + 50 + position));
if (checkBox1showprise.Checked == true)
{
e.Graphics.DrawString(dataGridView1.Rows[i].Cells[5].Value.ToString(), new Font("Arial", 12, FontStyle.Regular), Brushes.Black, new Point(700, yposition + 50 + position));
}
position += 25;
}
}
yposition = yposition + 100;
}
// reset vaerables
// NoOfItemPerpage = 0;
NoOfItemsTill = 0;
}
I want that after every 5 elements of my array, the next page is created and the data is printed onto the next page.
I Have looked around and I have not found a solid answeer to this question. I am trying to print my datagrid content when I press a button, the main problem is that my datagrid has too much data and only whatever is shown in the screen is printing. I need It to print all data and if the data does not fit in current page create a mew page and print the rest.
Here is my solution printing Data Grid View using System.Drawing.Printing
using System.Drawing.Printing;
private int PageCounter { get; set; } = 1;
private int RowCounter { get; set; }
Print Button
private void BtnPrint_Click(object sender, EventArgs e)
{
PrintDocument printDoc = new PrintDocument();
IQueryable<PaperSize> paperSizes = printDoc.PrinterSettings.PaperSizes.Cast<PaperSize>().AsQueryable();
printDoc.DefaultPageSettings.PaperSize = paperSizes.First(ps => ps.Kind == PaperKind.A4);
printDoc.DefaultPageSettings.Margins = new Margins(0, 0, 0, 0);
pageCounter = 1;
printDoc.PrintPage += PrintDoc_PrintPage;
printDoc.Print();
}
Print Method
private void Print_Document(object sender, PrintPageEventArgs e)
{
if (e.Graphics == null)
throw new Exception("Unable to find page Graphics!");
int left = 30;
int cellLeft = left;
int top = 50;
int cellWidth = 0;
int headerHeight = 30;
string headerName = string.Empty;
string cellValue = string.Empty;
Rectangle rect = new();
int pageWidth = e.PageSettings.PaperSize.Width - 60;
int pageHeight = e.PageSettings.PaperSize.Height - 100;
Graphics g = e.Graphics;
Font font = new(FontFamily, 9);
Pen p = new(Brushes.Black, 1f);
Pen borderP = new(new SolidBrush(Color.FromArgb(240, 240, 240)), 1f);
StringFormat stringFormatCenter = new()
{
Alignment = StringAlignment.Center,
LineAlignment = StringAlignment.Center
};
StringFormat stringFormatRight = new()
{
Alignment = StringAlignment.Far,
LineAlignment = StringAlignment.Center
};
StringFormat stringFormatLeft = new()
{
LineAlignment = StringAlignment.Center
};
if (PageCounter == 1)
{
g.DrawRectangle(p, new Rectangle(left, top, pageWidth, 30));
top += 30;
g.DrawRectangle(p, new Rectangle(left, top, pageWidth, 30));
top += 30;
g.DrawRectangle(p, new Rectangle(left, top, pageWidth, 30));
top += 30;
g.DrawRectangle(p, new Rectangle(left, top, pageWidth / 2, 30));
g.DrawRectangle(p, new Rectangle(left + (pageWidth / 2), top, pageWidth / 2, 30));
top += 30;
top = 50;
g.DrawString
("Company Name"
, new Font(FontFamily, 14f, FontStyle.Bold)
, Brushes.Black
, new Rectangle(left, top, pageWidth, 30)
, stringFormatCenter);
top += 30;
g.DrawString
("Business Type"
, new Font(FontFamily, 12f, FontStyle.Bold)
, Brushes.Black
, new Rectangle(left, top, pageWidth, 30)
, stringFormatCenter);
top += 30;
g.DrawString
("Report Name"
, new Font(FontFamily, 12f, FontStyle.Bold)
, Brushes.Black
, new Rectangle(left, top, pageWidth, 30)
, stringFormatCenter);
top += 30;
g.DrawString
("User Name: " + SelectedUser.Name
, new Font(FontFamily, 9, FontStyle.Bold)
, Brushes.Black
, new Rectangle(left, top, pageWidth / 2, 30)
, stringFormatLeft);
g.DrawString
("Report Date: " + DateTime.Now.ToString("dd-mm-yyyy hh:mm:ss")
, new Font(FontFamily, 9, FontStyle.Bold)
, Brushes.Black
, new Rectangle(left + (pageWidth / 2), top, pageWidth / 2, 30)
, stringFormatRight);
top += 30;
g.DrawString
("Login Id: " + SelectedUser.LoginId
, new Font(FontFamily, 9, FontStyle.Bold)
, Brushes.Black
, new Rectangle(left, top, pageWidth / 2, 30)
, stringFormatLeft);
g.DrawString
("Printed By: " + LoggedUser.Name
, new Font(FontFamily, 9, FontStyle.Bold)
, Brushes.Black
, new Rectangle(left + (pageWidth / 2), top, pageWidth / 2, 20)
, stringFormatRight);
top += 30;
g.DrawString
("Rights detail as follows:"
, new Font(FontFamily, 8, FontStyle.Bold)
, Brushes.Black
, new Rectangle(left, top, pageWidth, 20)
, stringFormatLeft);
top += 20;
}
g.FillRectangle(new SolidBrush(Color.FromArgb(234, 239, 250)), new Rectangle(left, top, pageWidth, headerHeight));
foreach (string name in PrintableRights.First().GetType().GetProperties().Select(p => p.Name))
{
if (name.Equals("SrNo"))
{
headerName = "Sr #";
cellWidth = Convert.ToInt32(Convert.ToDecimal(pageWidth) / 100 * 8);
}
else if (name.Equals("Code"))
{
headerName = "Code";
cellWidth = Convert.ToInt32(Convert.ToDecimal(pageWidth) / 100 * 20);
}
else if (name.Equals("Name"))
{
headerName = "Name";
cellWidth = Convert.ToInt32(Convert.ToDecimal(pageWidth) / 100 * 57);
}
else if (name.Equals("HasRight"))
{
headerName = "Right";
cellWidth = Convert.ToInt32(Convert.ToDecimal(pageWidth) / 100 * 15);
}
rect = new Rectangle(cellLeft, top, cellWidth, headerHeight);
g.DrawString(headerName, new Font(FontFamily, 10, FontStyle.Bold), Brushes.Black, rect, stringFormatLeft);
cellLeft += cellWidth;
}
top += headerHeight;
cellLeft = left;
while (RowCounter < PrintableRights.Count())
{
object row = PrintableRights.ElementAt(RowCounter);
cellLeft = left;
foreach (string name in row.GetType().GetProperties().Select(prop => prop.Name))
{
if (name.Equals("SrNo"))
cellWidth = Convert.ToInt32(Convert.ToDecimal(pageWidth) / 100 * 8);
else if (name.Equals("Code"))
cellWidth = Convert.ToInt32(Convert.ToDecimal(pageWidth) / 100 * 20);
else if (name.Equals("Name"))
cellWidth = Convert.ToInt32(Convert.ToDecimal(pageWidth) / 100 * 57);
else if (name.Equals("HasRight"))
cellWidth = Convert.ToInt32(Convert.ToDecimal(pageWidth) / 100 * 15);
rect = new Rectangle(cellLeft, top, cellWidth, 20);
g.DrawRectangle(borderP, rect);
PropertyInfo? prop = row.GetType().GetProperty(name);
if (prop != null)
{
if (prop.PropertyType == typeof(bool))
{
var val = prop.GetValue(row, null);
if (val != null && (bool)val)
g.DrawString("Yes", font, Brushes.Black, rect, stringFormatLeft);
else if (val != null)
g.DrawString("No", font, Brushes.Black, rect, stringFormatLeft);
}
else if (prop.PropertyType == typeof(int))
{
var val = prop.GetValue(row, null);
if (val != null)
g.DrawString(((int)val).ToString("N0"), font, Brushes.Black, rect, stringFormatRight);
else
g.DrawString(string.Empty, font, Brushes.Black, rect, stringFormatRight);
}
else if (prop.PropertyType == typeof(string))
{
var val = prop.GetValue(row, null);
if(val != null)
g.DrawString((string)val, font, Brushes.Black, rect, stringFormatLeft);
else
g.DrawString(string.Empty, font, Brushes.Black, rect, stringFormatLeft);
}
}
cellLeft += cellWidth;
}
top += 20;
if (RowCounter < PrintableRights.Count() - 1)
{
if (top > pageHeight - 10)
{
RowCounter++;
break;
}
}
RowCounter++;
}
if (RowCounter <= PrintableRights.Count() - 1)
{
if (top + 10 > pageHeight)
{
g.DrawString("Continue....", new Font(FontFamily, 7f), Brushes.Black, e.PageSettings.PaperSize.Width - 200, e.PageSettings.PaperSize.Height - 60);
g.DrawString("Page # " + PageCounter.ToString(), new Font(FontFamily, 7f), Brushes.Black, e.PageSettings.PaperSize.Width - 100, e.PageSettings.PaperSize.Height - 60);
PageCounter++;
e.HasMorePages = true;
}
}
else if (e.HasMorePages)
{
g.DrawString("Continue....", new Font(FontFamily, 7f), Brushes.Black, e.PageSettings.PaperSize.Width - 200, e.PageSettings.PaperSize.Height - 60);
g.DrawString("Page # " + PageCounter.ToString(), new Font(FontFamily, 7f), Brushes.Black, e.PageSettings.PaperSize.Width - 100, e.PageSettings.PaperSize.Height - 60);
PageCounter++;
}
else
{
g.DrawString("Last Page.", new Font(FontFamily, 7f), Brushes.Black, e.PageSettings.PaperSize.Width - 200, e.PageSettings.PaperSize.Height - 60);
g.DrawString("Page # " + PageCounter.ToString(), new Font(FontFamily, 7f), Brushes.Black, e.PageSettings.PaperSize.Width - 100, e.PageSettings.PaperSize.Height - 60);
}
}
a small question here where I didn't find a proper answer to.
I want to save a drawn location of a Ellipse so I can later on draw a line between 2 ellipses, so I want to save this as a point if this is possible.
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
screen.Clear(Color.Black);
using (var p = new Pen(Color.White, 2))
{
for (int x = 0; x < p1List.Count; x++)
{
screen.DrawLine(p, p1List[x], p2List[x]);
}
}
List<Point> punten = new List<Point>();
foreach (var pair in this.droppedShapes)
{
var shapeType = pair.Item2; // Reveal your own shape object here
var location = pair.Item1;
switch (shapeType) // Reveal your own shape object here
{
case 0:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 40, 40);
screen.DrawString("&", new Font(FontFamily.GenericMonospace, (float)28), whiteBrush, location.X - 11, location.Y - 13);
//input
screen.DrawLine(whitePen, location.X - 25, location.Y, location.X - 10, location.Y );
screen.FillEllipse(greenBrush, location.X - 30, location.Y - 5, 10, 10);
punten.Add(); //add the location of the "ellipse"
//input
screen.DrawLine(whitePen, location.X - 25, location.Y + 20, location.X - 10, location.Y + 20);
screen.FillEllipse(greenBrush, location.X - 30, location.Y + 15, 10, 10);
//output
screen.DrawLine(whitePen, location.X + 30, location.Y + 10, location.X + 45, location.Y + 10);
screen.FillEllipse(greenBrush, location.X + 40, location.Y + 5, 10, 10);
I already added the line "punten.Add()" because this is the line where I want to save the location.
If there is a better way, hit me up!
It seems alright to me, just replace your
punten.Add();
with
punten.Add(new Point(location.X, location.Y));
or something similar for drawing the lines between the locations.
Be aware that this will only add Points to your list, if the case 0 in the switch statement is hit, otherwise your List may not contain any Points (or you add Points to the list in the other case sections).
I'm really sorry to ask, but I'm getting desperate for not finding this after a couple of houres. So I know I can't use a foreach lus with a element.Remove() and that I need to use a for lus. But I just can't find a solution because it's a little bit more complicated. I'm making a drag and drop app with logic gates and I put these gates in a List<T> namely:
private List<Tuple<Point, int>> droppedShapes = new List<Tuple<Point, int>>();
I need to remove a gate with a click on the gate when i placed it, this is the method:
private void DeleteSelectedComponent(MouseEventArgs e)
{
if (droppedShapes != null)
{
foreach (var pair in droppedShapes)
{
var location = pair.Item1;
if (Math.Abs(location.X - e.X) < 25 && Math.Abs(location.Y - e.Y) < 25) //looks at width and height of component
{
droppedShapes.Remove(pair);
this.Invalidate();
}
}
}
}
I need that var location to know what gate needs to be deleted but I can't put this code in a for lus. (don't mind the very bad code) Thanks for your attention. I’m looking forward to your reply.
Here is the rest of my code if you need extra info:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Demo3
{
public partial class MainProgram : Form
{
private Graphics screen;
private Bitmap backBuffer;
private Point? currentLocation = null;
private List<Tuple<Point, int>> droppedShapes = new List<Tuple<Point, int>>(); // Use your own Shape-interface in stead of the listbox index
private List<String> ports = new List<string>();
private HelpClass helpclass;
private bool delete = false;
public MainProgram()
{
InitializeComponent();
backBuffer = new Bitmap(drawPanel.Width, drawPanel.Height);
screen = Graphics.FromImage(backBuffer);
this.currentLocation = new Point(20, 20);
helpclass = new HelpClass();
FillBox();
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
screen.Clear(Color.Black);
Pen whitePen = new Pen(Color.White);
SolidBrush tealBrush = new SolidBrush(Color.Teal);
SolidBrush whiteBrush = new SolidBrush(Color.White);
SolidBrush grayBrush = new SolidBrush(Color.Gray);
SolidBrush redBrush = new SolidBrush(Color.Red);
foreach (var pair in this.droppedShapes)
{
var shapeType = pair.Item2; // Reveal your own shape object here
var location = pair.Item1;
switch (shapeType) // Reveal your own shape object here
{
case 0:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("&", new Font(FontFamily.GenericMonospace, (float)18), whiteBrush, location.X - 11, location.Y - 13);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
break;
case 1:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("1", new Font(FontFamily.GenericMonospace, (float)10), whiteBrush, location.X, location.Y - 9);
screen.DrawString(">", new Font(FontFamily.GenericMonospace, (float)8), whiteBrush, location.X - 8, location.Y - 10);
screen.DrawLine(whitePen, location.X + 1, location.Y + 1, location.X - 5, location.Y + 1);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
break;
case 2:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("1", new Font(FontFamily.GenericMonospace, (float)12), whiteBrush, location.X - 7, location.Y - 9);
screen.DrawLine(whitePen, location.X - 20, location.Y, location.X - 10, location.Y);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
screen.DrawLine(whitePen, location.X + 16, location.Y, location.X + 10, location.Y - 6);
break;
case 3:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("&", new Font(FontFamily.GenericMonospace, (float)18), whiteBrush, location.X - 11, location.Y - 13);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
screen.DrawLine(whitePen, location.X + 16, location.Y, location.X + 10, location.Y - 6);
break;
case 4:
screen.DrawRectangle(whitePen, location.X - 10, location.Y - 10, 20, 20);
screen.DrawString("1", new Font(FontFamily.GenericMonospace, (float)10), whiteBrush, location.X, location.Y - 9);
screen.DrawString(">", new Font(FontFamily.GenericMonospace, (float)8), whiteBrush, location.X - 8, location.Y - 10);
screen.DrawLine(whitePen, location.X + 1, location.Y + 1, location.X - 5, location.Y + 1);
screen.DrawLine(whitePen, location.X - 20, location.Y + 6, location.X - 10, location.Y + 6);
screen.DrawLine(whitePen, location.X - 20, location.Y - 6, location.X - 10, location.Y - 6);
screen.DrawLine(whitePen, location.X + 20, location.Y, location.X + 10, location.Y);
screen.DrawLine(whitePen, location.X + 16, location.Y, location.X + 10, location.Y - 6);
break;
default:
break;
}
}
for (int i = drawPanel.Left - 5; i < drawPanel.Right + 10 ; i += 5)
{
for (int j = drawPanel.Top - 50 ; j < drawPanel.Bottom - 5 ; j += 5)
{
screen.FillEllipse(redBrush, i, j, 2, 2);
}
}
// draw current location
if (currentLocation != null)
{
Point p = currentLocation.Value;
screen.FillEllipse(tealBrush, p.X + 1, p.Y, -4, -4);
}
drawPanel.CreateGraphics().DrawImage(backBuffer, 0, 0); //allows you to draw
}
private void DrawPanel_MouseClick(object sender, MouseEventArgs e)
{
if (delete == false)
{
if (CheckIfCollision(e))
{
droppedShapes.Add(new Tuple<Point, int>(new Point(helpclass.WidthSnap(e.X, drawPanel.Width), helpclass.HeightSnap(e.Y, drawPanel.Height)), (int)ComponentList.SelectedIndex));
this.Invalidate();
}
}
else
{
DeleteSelectedComponent(e);
}
}
private void drawPanel_MouseMove(object sender, MouseEventArgs e)
{
this.currentLocation = new Point(e.X, e.Y);
this.Invalidate();
}
private void drawPanel_MouseLeave(object sender, EventArgs e)
{
this.currentLocation = null;
this.Invalidate();
}
private void FillBox()
{
AddComponent();
foreach (string component in ports)
{
ComponentList.Items.Add(component);
}
}
private void AddComponent()
{
ports.Add("AND - Port");
ports.Add("OR - Port");
ports.Add("NOT - Port");
ports.Add("NAND - Port");
ports.Add("NOR - Port");
}
private bool CheckIfCollision(MouseEventArgs e) //checks if position is already taken
{
String message = "";
foreach (var pair in this.droppedShapes)
{
var location = pair.Item1;
if (Math.Abs(location.X - e.X) < 25 && Math.Abs(location.Y - e.Y) < 25) //looks at width and height of component
{
message += "Position is already taken!";
MessageBox.Show(message);
return false;
}
}
return true;
}
private void deleteButton_CheckedChanged(object sender, EventArgs e)
{
if (deleteButton.Checked)
{
delete = true;
//Console.WriteLine("true");
}
else
{
delete = false;
//Console.WriteLine("false");
}
}
private void DeleteSelectedComponent(MouseEventArgs e)
{
if (droppedShapes != null)
{
foreach (var pair in droppedShapes)
{
var location = pair.Item1;
if (Math.Abs(location.X - e.X) < 25 && Math.Abs(location.Y - e.Y) < 25) //looks at width and height of component
{
droppedShapes.Remove(pair);
this.Invalidate();
}
}
}
}
private void restartButton_Click(object sender, EventArgs e)
{
droppedShapes.Clear();
this.Invalidate();
}
}
}
Add the ones you need to remove to a new list:
private void DeleteSelectedComponent(MouseEventArgs e)
{
if (droppedShapes == null) //Early-exit avoids arrow code, easier to read!
return;
var removeList = new List<Tuple<Point, int>>();
foreach (var pair in droppedShapes)
{
var location = pair.Item1;
if (Math.Abs(location.X - e.X) < 25 && Math.Abs(location.Y - e.Y) < 25) //looks at width and height of component
removeList.Add(pair);
}
removeList.ForEach(o => droppedShapes.Remove(o));
this.Invalidate();
}
The issue is that you can't iterate through a list and delete them at the same time. Add them to another list and remove them outside of the for-each.
Ok, I have got a printDocument1_PrintPage method which is supposed to print out the contents of a ListView. During execution, the method only prints out the first page. Could someone help me to printout the remaining page(s)?
I have identified the end of the first page via the variable ypos and set the property e.HasMorePages = true.
private void printDocument1_PrintPage(object sender, PrintPageEventArgs e){
Graphics graphics = e.Graphics;
int ypos = 78;
Font f1 = new Font("Arial", 14, FontStyle.Bold, GraphicsUnit.Pixel);
Brush brush = new SolidBrush(Color.LightSlateGray);
graphics.FillRectangle(brush, new Rectangle(10, 10, 770, 50));
Pen blackpen = new Pen(Color.Black);
Pen graypen = new Pen(Color.LightGray);
Pen redpen = new Pen(Color.Red);
graphics.DrawRectangle(blackpen, new Rectangle(10, 10, 770, 50));
Brush B = new SolidBrush(listView1.ForeColor);
graphics.DrawLine(blackpen, 10, 10, 10, 1132);
graphics.DrawString("FORENAME", f1, Brushes.Black, new Point(20, 25));
graphics.DrawLine(blackpen, 130, 10, 130, 1132);
graphics.DrawString("SURNAME", f1, Brushes.Black, new Point(140, 25));
graphics.DrawLine(blackpen, 290, 10, 290, 1132);
graphics.DrawString("EXT.", f1, Brushes.Black, new Point(300, 25));
graphics.DrawLine(blackpen, 380, 10, 380, 1132);
graphics.DrawString("JOB TITLE", f1, Brushes.Black, new Point(410, 25));
graphics.DrawLine(blackpen, 780, 10, 780, 1132);
int[] X = { 15, 140, 300, 390, 720 };
int Y = 60;
f1 = listView1.Font;
for (int I = 0; I < listView1.Items.Count; I++){
for (int J = 0; J < listView1.Items[I].SubItems.Count - 1; J++){
graphics.DrawString(listView1.Items[I].SubItems[J].Text, f1, B, X[J], Y);
}
Y += f1.Height;
graphics.DrawLine(graypen, 10, ypos, 780, ypos);
ypos = ypos + 17;
if (ypos > 1132){
e.HasMorePages = true;
return;
}
}
graphics.Dispose();
}