C# Object following the cursor...............

Question

1.00/5 (2 votes)

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This is my code

C#

private void You_MouseDown(object sender, MouseEventArgs e)
        {
            You.Location = Cursor.Position;
        }

Mt problem is that its not following it, the picturebox(You) is just going to some random location and not following the cursor, can anyone help?

Posted 14-Feb-11 19:13pm

C.CoderCreator

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**JF2015** · Answer 1 · 2011-02-14T19:29:00

Solution 1

Here is the code that works:

C#

private void You_MouseDown(object sender, MouseEventArgs e)
{
  You.Location = e.Location;
}

or this solution that converts the Cursor position to client coordinates:

C#

private void You_MouseDown(object sender, MouseEventArgs e)
{
  You.Location = PointToClient(Cursor.Position);
}

Posted 14-Feb-11 19:29pm

JF2015

Updated 14-Feb-11 19:32pm

v2

Comments

[no name] 15-Feb-11 1:33am

Its doing better then it was but, not the effect i want, for some reason its when i click it, it goes to the location near the cursor, i want it to follow the cursor while my mouse is holding down on it

JF2015 15-Feb-11 1:35am

The code you posted changes the mouse position when you move click the mouse button - you need to use a different event when you want to change the position every time the mouse moves.

Sergey Alexandrovich Kryukov 15-Feb-11 17:09pm

You did not finish the implementation. You should also process mouse up. Also consider capturing mouse. Bad naming of the methods (Microsoft violates its own naming rules in generated code, but this is not a valid reason to follow bad practice), anonymous methods is most adequate.
--SA

JF2015 16-Feb-11 0:18am

Since the OP did not exactly tell us what he wanted and only told us to use the MouseDown event, this is the correct solution. I added the other answer after the OP told us exactly what he wanted to achieve. I also did follow the naming convention of the OP so that it might be easier for him to include the snippets in his own code (but yes, you are totally right that the naming is bad). Sorry to have disappointed you but I think -40 is a bit harsh...

**JF2015** · Answer 2 · 2011-02-14T19:38:00

Solution 2

Alternative answer that moves a button when the mouse moves:

C#

bool m_bMouseDown = false;

private void Form1_MouseDown(object sender, MouseEventArgs e)
{
  button1.Location = PointToClient(Cursor.Position);
  m_bMouseDown = true;
}

private void Form1_MouseMove(object sender, MouseEventArgs e)
{
  if (m_bMouseDown)
    button1.Location = PointToClient(Cursor.Position);
}

private void Form1_MouseUp(object sender, MouseEventArgs e)
{
  m_bMouseDown = false;
}

Posted 14-Feb-11 19:38pm

JF2015

Comments

Sergey Alexandrovich Kryukov 15-Feb-11 17:09pm

Much better.
--SA

Sergey Alexandrovich Kryukov 15-Feb-11 17:11pm

Could be better is you discriminate which button is pressed, even it was not a requirement.
Also, this is not alternative, this is a fix to your incomplete code.
--SA

Xgener · Answer 3 · 2011-02-14T19:42:00

Solution 3

You can easily use this code

private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                PictureBox b = ((PictureBox) sender);
                b.Location = new Point(b.Left + e.X, b.Top + e.Y);

            }
        }

Posted 14-Feb-11 19:42pm

Xgener

Comments

[no name] 15-Feb-11 1:50am

This is the best code so far, but its just not moving with the cursor

Xgener 15-Feb-11 2:04am

May be I not uderstand... You should press and hold left button of the mouse, and move it. Then your picturebox would move with cursor

[no name] 16-Feb-11 0:00am

I hold down the left mouse and the object follows the mouse with the left mouse down