...is wrong to duplicate their
>>>> dimensions (their width and height should be declared invariant and...

...is wrong to duplicate their
dimensions (their width and height should be declared invariant and...

...now.  (The content also spans the whole width of the screen, thanks.)

However the text...

...dimensions in each instance, of course: variables width and height declared as invariant). By doing...

...int i = 0; i < NUMBER_OF_TILES_WIDTH; i++ )
  for( int j = 0; j < NUMBER...

...const int NUMBER_OF_TILES_WIDTH = SCREEN_WIDTH / TILE_WIDTH;
const int NUMBER_OF_TILES...

...probably too much zeal, I store the width and precision as short numbers. There are...

...3-parameter ctors to remove ambiguity between width and format
 * more changes forming part of...

...3-parameter ctors to remove ambiguity between width and format
 * many changes forming part of...

...3-parameter ctor to remove ambiguity between width and format
 * added compile-time user-customisation...