doxygen/VRAMObserver_8hh_source.html

 #ifndef VRAMOBSERVER_HH
 #define VRAMOBSERVER_HH

 #include "EmuTime.hh"

 namespace openmsx {

 class VRAMObserver {
 public:
         virtual void updateVRAM(unsigned offset, EmuTime::param time) = 0;

         virtual void updateWindow(bool enabled, EmuTime::param time) = 0;

 protected:
         ~VRAMObserver() = default;
 };

 } // namespace openmsx

 #endif
openmsx::VRAMObserver::updateVRAM
virtual void updateVRAM(unsigned offset, EmuTime::param time)=0
Informs the observer of a change in VRAM contents.

openmsx::VRAMObserver::~VRAMObserver
~VRAMObserver()=default

EmuTime.hh

openmsx::VRAMObserver
Interface that can be registered at VRAMWindow, to be called when the contents of the VRAM inside tha...
Definition: VRAMObserver.hh:11

openmsx
Thanks to enen for testing this on a real cartridge:
Definition: Autofire.cc:5

openmsx::VRAMObserver::updateWindow
virtual void updateWindow(bool enabled, EmuTime::param time)=0
Informs the observer that the entire VRAM window will change.