forlang.hlp (Table of Contents; Topic list)
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imagesize Functions
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     The imagesize functions return the number of bytes needed to store
     the image defined by the bounding rectangle. The rectangle is
     specified by the coordinates given in the function call.
 
     The imagesize function defines the bounding rectangle in terms of
     the view-coordinate points (<x1>, <y1>) and (<x2>, <y2>).
 
     The imagesize_w function defines the bounding rectangle in terms of
     the window-coordinate points (<wx1>, <wy1>) and (<wx2>, <wy2>).
 
     Return Value
 
     The function returns the storage size of the image in bytes.
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