Where to delete class objects instantiated with the new operator in ofApp.cpp?

diff-arch · May 7, 2020, 1:32pm

Hi,

If I instantiate class objects inside ofApp.cpp, using the new operator - which allocates them in heap memory - , where do I need to delete them, if they remain valid until the application is closed?

Is there for instance something like an ofApp::exit() method that executes code right before quitting the application?
Or should I declare and define a destructor for the ofApp class, and if so, does it take care of the cleanup at the end, if I put delete myObject inside its definition?

I’m pretty new to C++! Any help is appreciated.

Thanks.

diff-arch · May 8, 2020, 4:25pm

Anybody? *bump

thomasgeissl · May 8, 2020, 4:45pm

heyho,
there is an exit function you can override.

github.com

openframeworks/openFrameworks/blob/patch-release/libs/openFrameworks/app/ofBaseApp.h#L23


class ofBaseApp : public ofBaseSoundInput, public ofBaseSoundOutput{


	public:
		ofBaseApp();


		virtual ~ofBaseApp();


		virtual void setup();
		virtual void update();
		virtual void draw();
		virtual void exit();


		virtual void windowResized(int w, int h);


		virtual void keyPressed( int key );
		virtual void keyReleased( int key );


		/// \brief Called on the active window when the mouse is moved
		virtual void mouseMoved( int x, int y );


		/// \brief Called on the active window when the mouse is dragged, i.e.

should be also fine to add a destructor. i am not an expert c++ programmer, but i always try to avoid pointers. if i have to, then i try to use smart pointers. there is a chapter in the ofBook about smart pointers.
https://openframeworks.cc/ofBook/chapters/memory.html#smartpointers
hope that helps