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_imagesize Functions
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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <graph.h>
 
  Syntax:    long _imagesize( short x1, short y1, short x2, short y2 );
 
             long _imagesize_w( double wx1, double wy1,
                                double wx2, double wy2 );
 
             long _imagesize_wxy( struct _wxycoord __far *pwxy1,
                                  struct _wxycoord __far *pwxy2 );
 
  Returns:   the image's storage size in bytes.
 
  See also:  _getimage, _putimage
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