Let's try again: http://www.codeproject.com/csharp/AutoDiagrammer.asp

Hi Led Mike, Thanks for the guidance, Ill read the article, and get back if needed. Cheers, Rajesh

Each .NET Windows Forms control is a Windows window, which is a user object. Any application which uses a large number of controls is likely to suffer from problems. I suspect you're using a lot of PictureBoxes or similar. The solution unfortunately is to manage the drawing surface of a control directly. That is, defining your own control that derives from Control, and overriding its OnPaint method to draw its surface, and any other methods needed to allow the user to interact with the control. You should normally perform all painting in the OnPaint method; from other methods you should update whatever data structures describe the current display and call Invalidate to tell Windows that the control needs repainting; Windows will then call OnPaint when the application is idle. For better performance, you normally Invalidate only the rectangle (or region if a shaped region) that actually needs to be redrawn. In the OnPaint method, use the PaintEventArgs ClipRectangle member, or the Graphics object's IsVisible method, to work out what needs to be redrawn. Reducing the amount of drawing done will normally speed up the drawing and give a more responsive application. Stability. What an interesting concept. -- Chris Maunder

Hey Thanks Buddy. I had used ANTS Profiler and i found it to be very slow(atleast on my system)... But the other one was a very handy, and it made my life easy!!! And can i have some dedicated Performance profilers also?? Thanks anyway, Rajesh

Colin is correct. If you use any GDI or GDI+ objects, especially when doing you own custom drawing, and don't properly release them by calling Dispose when your done with them, the unmanaged underlying system handles don't get released and are eventually exhausted, causing your OutOfMemory Exception. There are other things that will cause this too, but not properly Disposing the objects you're using, no matter what they are, will result in exhausting one or more of the system handle pools. If you want a quick check of this, open TaskManager, click on its Processes tab, then go to the view menu and pick Select Columns. Turn on Handles, Threads, USER Objects, and GDI Objects. Click OK, then go to the list and file your app. Watch it run for a little while. If any of these counters just keeps rising the longer you use your app, this gives you a hint of where the problem lies. Handle counts usually don't rise above 1,000 in most cases. I have seen examples of piss-poor programming (in commercial software, no less!) where the Handle count grew above 100,000 handles in use! This is a REALLY BIG clue there's leaky code somewhere in that app... RageInTheMachine9532 "...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

RajeshGuptha wrote: - Earlier, I was creating and releasing a COM object in a method that was being called many times. Now, I moved the creation into the class constructor and the releasing into the Dispose(). If this COM object, or any other Interop call you do, call the ExitProcess() API, you'll see the behavior you described: the program closes silently, without any exception. To try isolating the problem, try to remove the COM object and any interop call, even if your program does not work, and see if still closes. If it does not close anymore, try adding each interop call you do until you find what is the culprit. I see dead pixels Yes, even I am blogging now!

Actually i tried transforming the region of the control to a rotation... for example, Region reg = new Region(); Matrix matObj = new Matrix(); matObj.RotateAt(/*some angle*/, /*with respect to some point*/); reg.Transform(matobj); myControl.Region = reg; Iam able to attain the rotation...but supposing the region (reg in this example)is in another shape(than rectangle)...say ellipse, then the shape of the ellipse is not visible completely....reason is that the rectangle coordinates(i.e. the original rectangle size) used to draw the ellipse is smaller than the rotated structure...(after rotation, the location of points are actually out of the bounds of the controls client rectangle...) So i tried to get the size of the outer rectangle which has completely both the original and the rotated rectangles... by some trignometry... but nope, im not getting the exact coordinates... can you help me in this?? I Thanks and Regards, Rajesh

In the mouse move event: private void _MouseMove(sender,e) { Point p = Control.MousePosition; //and then try to apply what you want according to the value of this point like: this.Location = p; }

thanks a lot Jim. Im sure that i can proceed on with this.