Sets the vertical DPI for the image stored in Rosetta's memory buffer
Usage:
imgSetYDPI (object me, integer newDPI)
Parameters:
newDPI (integer) - sets a new DPI
Returns:
(integer) - The success code
Example:
xtRose = xtra("Rosetta").new( )
xtRose.imgOpen( "C:\windows\test.jpg" )
xtRose.imgSetYDPI( 72 )
Notes:
DPI information is only applicable to TIFF, JPEG, PNG and BMP formats. Setting this setting will have no effect on other image formats.