Following one of my previous comments you need to do the following in a “main program” where you create the cgvDraw object.

1. Create the object
2. Pass in the object’s instance to it’s static instance variable.

cgvDraw cgObject = new cgvDraw();
cgObject->setInstance(cgObject);

Looking at your code and it is a really good idea.

I am having a few problems however in getting it to work.. It may be a general C++ error but for some reason it keeps complaining that the instance variable isn’t defined..

class cgvDrawWrap
{
	protected:
		static cgvDrawWrap *instance;
 
	public:
		static void drawSceneWrap()
		{
			instance->drawScene();
		}
 
		static void setInstance(cgvDrawWrap *in)
		{
			//printf("\nBefore %ld\t%ld", in, cgvDrawinstance);
			instance = in;
			//printf("\nAfter %ld\t%ld", in, instance);
		}
};
 
class cgvDraw : public cgvDrawWrap
{
	public:
 
		// Class constructor
		cgvDraw()
		{
			// Set the instance of the class
			this->setInstance(this);
                        ..........................
                }
};

this is only a cut down version of the offending code – but it seems the same as what you have and I don’t know why it isn’t working.

Any ideas would be amazing.

“undefined reference to `cgvDrawWrap::instance’”

Regards,
Richard

Based on other Flash discussions I have read, Apple is most likely avoiding Flash because they don’t have control of the source code. If there are bugs then users will have crashing devices and Apple will not have the ability to fix the issue. It makes them rely on a third party to fix the offending code. Avoiding dependencies is a good thing from a software development perspective.

In a similar fashion, background 3rd party applications could crash and render a mobile device very slow and unresponsive. Without the “taskbar” interface users would not have the ability to shut down and stop these applications. Thus third party background applications are a bad user experience.

It’s not that developers can’t be trusted, it’s that Apple would then have to wait for the developers to fix a bug or Apple would have to remotely disable the unstable application. Neither scenario is good for users.

And this quote comes to mind: “No one writes perfect code in the first time, except me … but there is only one of me …”