This command in combination with LOCK PIXELS will return the pitch in bytes of the visual surface you have locked.

Return Integer=GET PIXELS PITCH()

The value returned is the number of bytes required to advance the screen address pointer to the next line down

A pitch is the number of bytes you must skip to get to the next physical line of pixels in a visual surface.

LOCK PIXELS

pitch=GET PIXELS PITCH()

UNLOCK PIXELS

PRINT pitch

WAIT KEY

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