This article will help you too: Timers in NET[^] #region signature my articles #endregion

So to make 10/100 result in 0.1 , U can use 10.0/100 or 10.0/100.0 as they said. But, if it is a variable like: int a=10,b=100; then U will have to typecast it like a/((double)b). Regards, Arun Kumar.A

this method works for n Equations n Unknows. FOR 2 Equations 2 Unknows For one system like this: {a*X+b*Y=c {d*X+e*Y=f the part of code ar: if (a*e-d*b) { X=(c*e-f*b)/(a*e-d*b); Y=(a*f-d*c)/(a*e-d*b); } else { MessageBox.Show("Many solution!!!"); } PS: The determinant |a b| is equal with a*d-b*c |c d| math my love

Thanks so much that worked!:-D

Hello, Just an info: Make sure that your Pen instance p will be disposed. Specially in the Paint event you will get a lot of Pen instances in your memory (plus: I think pen is also a GDI object, which is shown in the taskmanager) which are not able to get cleaned from the GC. I would recomend a "using" block for your code. using(Pen p = new Pen(Color.Blue, 4) { g.DrawEllipse(p, r); } All the best, Martin

Don't use a timer. Use the MouseEnter, MouseMove and MouseLeave events to trigger the update the control. Those events give you a MouseEventArgs object that contains the coordinates of the mouse pointer. Store the coordinates in member variables so that you can use them in the paint event. There is no use in having more than one paint event handler for a control. They will just run after each other, so you can just put all the code in the same event handler. laura1316 wrote: //In timer function will take in mouse input and update circle so need to call f2_paint. this.Paint += new PaintEventHandler(f2_paint); That will not call the event handler, it will instead add another event handler to the event. If you do that in a timer event, you soon will have thousands of event handlers in the paint event, each one drawing the same thing on top of the other. When you need the control to be redrawn, just call the Invalidate method of the control. This will cause a paint event. --- single minded; short sighted; long gone;

I think, the easiest way is to create a new project in c++ enviorment - dll. It isn't much harder than creating single project. And than just add this dll to C# project. One nation - Underground!

Laura, Another thing you can try is your own simple double buffering: Paint everything to a temporary bitmap and then paint the bitmap to the graphics passed by the event args, like so: Bitmap temp = new Bitmap(e.ClipRectangle); // do your painting e.Graphics.DrawImageUnscaled(temp, e.ClipRectangle); That may help. Incidentally, are you using transparency of any kind? Transparency can cause flickering despite double buffering.

You need to turn on double buffering, probably. Sorry, you need to google for the code, don't know it off hand. You also need to post your code, so we can see how you're going about it. Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Well, I started working on a Mac long time ago, all monitors were 72 dpi and all programs were real size, even Microsoft Word. It was marvelous, you could hold a printed page against the monitor and print and screen would fit up to the millimeter. When I switched to PCs and Windows (98, NT, XP), I insisted on keeping real size, although monitors improved, one of them is at 135 dpi now. And I still manage in most applications; biggest problem is with some web pages that insist on petite fonts, ignoring system settings. So I created a small background app (in C# of course) that upon ALT-S switches resolutions to some 80% of reality (and back) for easier reading those difficult pages, keeping track of desktop icon positions, and window sizes, restoring as much as possible when hitting ALT-S a second time. The one thing it does not do is restore the size of the windows that were minimized (I dont know how to get/set these values, I think they are well hidden inside Windows Explorer). Any suggestion here would be welcome. :) Luc Pattyn [My Articles]

This is the reason I always try to minimize the exit points from a method or function. The reason for the error message is that a return statement is missing at the end of the method. Put a "return false;" statement just before the last brace and your method will not have this problem. Phil