Xor

Parameter to the Put graphics statement which uses a bit-wise Xor as the 
blitting method

Syntax
   Put [ target, ] [ STEP ] ( x,y ), source [ ,( x1,y1 )-( x2,y2 ) ], Xor

Parameters
   Xor
      Required.

Description
   The Xor method combines each source pixel with the corresponding 
   destination pixel, using the bit-wise Xor function.  The result of this 
   is output as the destination pixel.
   This method works in all graphics modes.  There is no mask color, 
   although color values of 0 (RGBA(0, 0, 0, 0) in full-color modes) will 
   have no effect, because of the behavior of Xor.

   In full-color modes, each component (red, green, blue and alpha) is kept 
   in a discrete set of bits, so the operation can be made to only affect 
   some of the channels, by making sure the all the values of the other 
   channels are set to 0.

Example
   ''open a graphics window
   ScreenRes 320, 200, 16

   ''create a sprite containing a circle
   Const As Integer r = 32
   Dim c As Any Ptr = ImageCreate(r * 2 + 1, r * 2 + 1, 0)
   Circle c, (r, r), r, RGBA(255, 255, 255, 0), , , 1, f

   ''put the three sprites, overlapping each other in the middle
   Put (146 - r, 108 - r), c, Xor
   Put (174 - r, 108 - r), c, Xor
   Put (160 - r,  84 - r), c, Xor

   ''free the memory used by the sprite
   ImageDestroy c

   ''pause the program before closing
   Sleep

Differences from QB
   * None

See also
   * Xor
   * Put (Graphics)

