C# Drag and drop controls within a container

Question

I've been using the drag and drop controls within a container example but could do with some help. If I want to drag and drop more than one button, say multiple buttons created at runtime and held in an arraylist how would I go about this?

c grake · Answer

Still having trouble with the heavy cpu when dragging. How can I put this control on a seperate thread?

c grake · Answer

Im guessing it involves threads but being new to c# im not sure where to start.

c grake · Answer

Jumps to 99% cpu utilisation. How do I go about stopping this heavy cpu usage?

fcojaviermu · Answer

I'm glad it worked for you  As to your other question try opening up the Windows task manager and have a look at what the performance is on the processor while your dragging the pictureBox . FMartin

c grake · Answer

I've come across one more problem. When I drag the picturebox's(with a background image) across a panel the image isnt displayed whilst dragging when dragging with a button it works fine.

c grake · Answer

Excellent that works a charm.

fcojaviermu · Answer

This is how I would do it if you want to move controls around in a container : private int xDown; private int yDown; private bool moving; private void Form1_Load(object sender System.EventArgs e) { foreach(Control c in this.Controls) { c.MouseDown+=new MouseEventHandler(c_MouseDown); c.MouseMove+=new MouseEventHandler(c_MouseMove); c.MouseUp+=new MouseEventHandler(c_MouseUp); } } private void c_MouseDown(object sender MouseEventArgs e) { yDown=0; if(e.Button.ToString()==Left) { moving=true; xDown=e.X; yDown=e.Y; } } private void c_MouseMove(object sender MouseEventArgs e) { Point w=new Point(); if(moving) { Control d=(Control)sender; w.X=d.Location.X+(e.X-xDown); w.Y=d.Location.Y+(e.Y-yDown); d.Location=w; } } private void c_MouseUp(object sender MouseEventArgs e) { moving=false; }