Question

How to get Form.MousePosition in an other class than the parent (std. => Form1)?

Asked by: develc

Hi experts,

I want to write a class handling the drag and drop (not moving controls into other controls--> moving pictures and so on by using the mouse).

Therefore I need the MousePosition.
Normally I can get this information by using MousePosition.X (or .Y) in the main form. But I really don't want to handle this by giving the position as parameter to the class that handles DDrop.
To become clear about this problem, I wrote a short demonstration(Code Snippet below) of what I want to know from you.


THE PROBLEM:
------------------
The attribute MousePosition is not available in the class if I want to access the Form1 from there.
Is there a way to get full control of attribute/parameters of this Form1 by this class I watn to write?

Note: I don't want any more values as parameters in the methods like "setStartDragPosition();" if it is possible.

//in main Form:
 
FormsMouseHandler mh = new FormsMouseHandler();
formToBin = this;
mh.setStartDragPosition();
 
//=================================
//=================================
 
 
 
//The Class (a part):
 
class FormsMouseHandler
{
 public Form formToBind;
 private int startX;
 private int startY;
 
 private void setStartDragPosition()
 {
  //Sets starting position of the object you want to drag
  if(formToBind!=null)
  {
  startX = formToBind.MousePosition.X;
  startY = formToBind.MousePosition.Y;
  }
 } 
 
}

                                  
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Asked On
2008-11-27 at 22:27:34ID23941528
Tags

C#

Topics

C# Programming Language

,

.NET

,

Microsoft Visual C#.Net

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: jungesPosted on 2008-11-28 at 01:31:16ID: 23054498

what about the follow?
formToBind.PointToClient(Cursor.Position);

 

by: imateyelectronicsPosted on 2008-11-28 at 03:59:21ID: 23054981

You can expose a public property from your form and access it from your class.  It would look something like the following:

//Within your form
 
private int m_MouseX;
 
public int MouseX
{
    get { return mousePosition.X; }
}
 
private int m_MouseY;
 
public int MouseY
{
    get { return mousePosition.Y; }
}
 
//You would the changd your function to this:
 
class FormsMouseHandler
{
 public Form formToBind = new Form();
 private int startX;
 private int startY;
 
 private void setStartDragPosition()
 {
  //Sets starting position of the object you want to drag
  if(formToBind!=null)
  {
  startX = formToBind.MouseX;
  startY = formToBind.MouseY;
  }
 } 
 
}
                                              
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by: develcPosted on 2008-11-28 at 11:27:36ID: 31520886

Thanks a lot.
Not EXACLTY what I was looking for, but this helps a lot and does its function.

20120131-EE-VQP-002

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