How do i use mouse drag to draw circle? Currently i only know how to use Eclipse(x1,y1,x2,y2) but it uses fixed coordinates to draw. I need the codes for using mouse to draw. thanx alot.

You need to change your coordinates inside your even loop when you recienve mouse events:

{
 static int start_x;
 static int start_y;
 int mx, my;
...
...

case WM_MOUSEMOVE:
  mx = GET_X_LPARAM(lParam);
  my = GET_Y_LPARAM(lParam);
  break;
...
...

Eclipse(start_x, start_y,mx,my);
...
...

Regards,
Meredith Shaebanyan