ok
but this will work only in case of normal mouse cursor. what if i want the blue line to be drawn even if my mouse cursor is something else e.g a cross.
then it will not work

how do you get mouse cursor coordinates when mouse not on form ?

how do you get mouse cursor coordinates when mouse not on form ?

how do you get mouse cursor coordinates when mouse not on form ?

This is a nice article, but it doesn't mention what to do when the form's background is not white, but is a picture or a gradient. It gets much more difficult in that condition.

hi..im lookin for a script that can capture my mouse Coordinates if i hover my mouse to an IMAGE ONLY within my page. Tnx!!!

I made a new tutorial that shows you how to get the mouse cursor coordinates on the screen, and not just on the form. It uses the Windows API:

<a href="http://www.geekpedia.com/tutorial146_Get-screen-cursor-coordinates.html" target="_blank">http://www.geekpedia.com/tutorial146_Get-screen-cursor-coordinates.html</a>.

da

This is heavily flawed, just assuming the background is white is bad. You need to figure out how to redraw a portion of the screen (not the whole screen) of where the line used to be.

Just wanted to thank you

I have been looking for a script that reads the form cords and not the windows cords

thank you

i m new to c#..so i don't get what u have written...so plz explain it more from begining..

thanx.

thnx

I have a form and i have a groupbox on the form.I need to calculate the mouse cordinates when the mouse is inside the groupbox.How to do this.Please help.Thanks

how do you get mouse cursor coordinates when mouse not on form ?

haha nice .. but now the erased Lines will act as a Eraser to previously drawn Shapes .. this is not a flawless code ... i have made an error free code for line drawing feature of PaintBrush ... see this



using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.IO;
using System.Drawing.Imaging;

namespace tryMapping2
{




public partial class Form1 : Form
{
public Pen p = new Pen(Color.Black);
public bool drawLine = false;
Point startPoint;
bool isDrawing = false;
Point endPoint;
int eraseX;
int eraseY;
Graphics gr;
List<Point> lStartPoints;
List<Point> lEndPoints;

public Form1()
{
InitializeComponent();
this.MouseMove = new MouseEventHandler(Form1_MouseMove);
this.MouseDown =new MouseEventHandler(Form1_MouseDown);
this.Paint = new PaintEventHandler(Form1_Paint);
timer1.Tick = new EventHandler(timer1_Tick);
panel.MouseEnter = new EventHandler(panel_MouseEnter);
button1.MouseEnter = new EventHandler(button1_MouseEnter);
button2.MouseEnter = new EventHandler(button2_MouseEnter);
this.MouseEnter = new EventHandler(Form1_MouseEnter);
}

void Form1_MouseEnter(object sender, EventArgs e)
{
if (drawLine)
{
Cursor = Cursors.Cross;
}
}






void button2_MouseEnter(object sender, EventArgs e)
{
this.Cursor = Cursors.Arrow;
}

void button1_MouseEnter(object sender, EventArgs e)
{
this.Cursor = Cursors.Arrow;
}

void panel_MouseEnter(object sender, EventArgs e)
{
this.Cursor = Cursors.Arrow;
}

void timer1_Tick(object sender, EventArgs e)
{
RefreshLines(gr);
}


public class Line
{
public void drawLine(Pen p, Graphics g, Point start, Point end)
{
Form1 form1 = new Form1();
g.DrawLine(form1.p, start, end);
}
}





void Form1_Paint(object sender, PaintEventArgs e)
{
RefreshLines(gr);
}

private void Form1_Load(object sender, EventArgs e)
{

lStartPoints = new List<Point>();
lEndPoints = new List<Point>();
gr = CreateGraphics();
timer1.Interval = 1;
}

void Form1_MouseDown(object sender, MouseEventArgs e)
{

if (drawLine)
{
isDrawing = true;
startPoint = new Point(e.X,e.Y);
lStartPoints.Add(startPoint);

eraseX = startPoint.X;
eraseY = startPoint.Y;
this.MouseUp = new MouseEventHandler(Form1_MouseUp);
timer1.Start();

}
}

void Form1_MouseUp(object sender, MouseEventArgs e)
{

this.MouseUp -= Form1_MouseUp;
isDrawing = false;
lEndPoints.Add(endPoint);
timer1.Stop();
RefreshLines(gr);

}


void Form1_MouseMove(object sender, MouseEventArgs e)
{
label1.Text = e.X " , " e.Y;


if (drawLine

great

bakwas

Nice coding..!

Great ideas, got to say I've based most of my code off of this thread. I have a rather complex program that uses many lines that must be redrawn many times a second. Unfortunately it seems to make the screen blink as the lines are erased and redrawn in their new locations. I feel like this method is somehow inefficient, is there a faster way for the computer to erase all the draw lines at once instead of having to recompute each line and erase separately? My idea was to have the panel repainted before drawing the new set of lines. How can this be done?

Any help is appreciated.

cheers

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My problem with this is i am using a child form so i can have many windows and the positions y value is not right. it is actually below the cursor at different lengths depending on the size of the window? any suggestions?

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