How to draw a PNG from a file in LittleFS into a Sprite so I can push it later.

[ghost]

Drawing a PNG is very simple writing directly to the LCD:

lcd.drawPngFile(LittleFS, "/Sword.png", 150, 150);

It works simply and easily. Marvelous.

OTOH, attempting to draw into an LGFX_Sprite fails quite badly:

  localSprite->drawPngFile(LittleFS, "/Sword.png", 150,150);

with compile errors because the following virtual functions are pure within 'lgfx::v1::DataWrapperT<fs::LittleFSFS>'

As far as I can tell

   lcd.setFileStorage(LittleFS);

correctly initializes the _data_wrapper_factory within LGFXBase.hpp
but the _data_wrapper_factory is null within an LGFX_Sprite instance and attempting to initialize it fails:

   localSprite->setFileStorage(LittleFS);

with the same pure virtual issues shown above when trying to call drawPngFile and passing LittleFS as the first parameter.

If I call:

  localSprite->drawPngFile( "/Sword.png", 150,150);

then it compiles OK, but because _data_wrapper_factory is null nothing gets drawn.
I'm pretty sure I am doing something wrong at a high level, but am currently a bit lost.

Any pointers greatly appreciated.

Cheers - Steve