camera as well as video

hello everyone

look at this sample
public list articlelisttext;
public button
listbutton;
public menuitem connectitem;
public button vectorbutton;

public button vectorbutton;
public menu filemenu;
public warningbox
wb;
public int numarticles;
public warningbox wb;
//
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could you explain how to develop camera extension?

source code may be found at http://hydroguard.eseco.fr after discussing about camera