QPx_InvertPicture

QPx_InvertPicture(pictVar):error
pictVar Picture Picture variable
error Longint Error result

Inverts the colors of a picture.

The source picture is passed in the pictVar parameter. The source picture may be compressed or uncompressed. The inverted picture is also returned in the pictVar parameter and it is always uncompressed. If an error occurs, pictVar is set to an empty picture.

Example

  `Invert a picture
 
C_PICTURE($picture)
C_LONGINT($error)
 
$picture:=[Images]Picture
 
$error:=QPx_InvertPicture ($picture)
 
If ($error=qpx_noErr)
  [Images]Picture:=$picture
End if

QPix © Escape
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