How can the user move a panel on a form with the cursor

Question

I have a form which has a panel on it.  This form is a child of an MDI form.   The panel is scrollable by the user with scroll bars and working well at this point.  I would like to know if there is any way this could be modified so that the user could drag the panel with the cursor

as well? If so, can you supply the correct event and code? 

Answer 1

Sorry for the C# code; I hadn't noticed what forum this was on, but I'm sure you can translate all that in VB.NET

Answer 2

Is this forum for C# or Visual Basic?

Answer 3

Be sure to also look at the recommended articles listed in the right side of the forum windows.

Answer 4

Here is a very ugly implementation (I don't have the time to make it performant), but you can get the idea of how it works.

private bool panelIsGrabbed = false;
private int xDistance, yDistance;

private void panel1_MouseDown(object sender, MouseEventArgs e)
{
   xDistance = panel1.Location.X - e.X;
   yDistance = panel1.Location.Y - e.Y;
   panelIsGrabbed = true;
}

private void panel1_MouseMove(object sender, MouseEventArgs e)
{
   if (panelIsGrabbed)
   {
      panel1.Location = new Point(e.X + xDistance, e.Y + yDistance);
   }
}

private void panel1_MouseUp(object sender, MouseEventArgs e)
{
   panelIsGrabbed = false;
}