loading image and drawing on it

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Hi,I want to load an image on a panel . then I want to messure the edgs of the image by using the function I have and draw the lines of the edges on that panel by clicking a button(not loosing my image).After that I want to draw lines on that image by using mouse.I also want to be able to erase the lines by mouse without erasing the main image.Now which functions should I use in every case?
Update:
One way may be that I set the backgroundImage of the panel with my image and use the paint function to draw exta lines _drawn by mouse.if I use this method, then which function should I use to draw lines of edges_drawn by clicking button? Is there a better way? Please guide me .Thanks in advance

Posted 8-Dec-11 9:21am

ready to learn

Updated 8-Dec-11 20:53pm

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#realJSOP · Answer 1 · 2011-12-08T09:26:00

Solution 1

Use a Panel object, set the BackgroundImage property to your loaded image, and then you can draw on the panel without affecting your background image.

Posted 8-Dec-11 9:26am

#realJSOP

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ready to learn 8-Dec-11 15:30pm

I used this way but if I want to set the backgroundImage of my image in the paint function,the image will lights up during drawing and if I want to se the backgroundImage in another function,then how should I darw on it?Edited:if I use this method,then I can use paint function to draw lines_by using mouse. which function should I use to draw lines _by clicking button?