>Check http://weblogs.foxite.com/vfpimaging/archive/2006/02/13/1139.aspx
>
>>May i know how to using GDI+ to changes JPG file from color to 16 Grays ?
>>Any help would be appreicated.

Thanks Sergey,

In fact, the article that Sergey pointed is an old one, before GdiPlusX was released. In that times I created a subclass of GPIMAGE from _GdiPlus.vcx that added the ImageAttributes class, that facilitates creating effects with GDI+


The most recommended resorce for this task is a more recent article in UTMAG:

Special effects on images with new GDIPlus-X classes - Part 2
http://www.utmag.com/ViewPageArticle.aspx?Session=76616B4D7A654864476D593D204E7834377858773754753374697357646432567761773D3D

The first part contains some interesting tips as well:

Special effects on images with new GDIPlus-X classes - Part 1
http://www.utmag.com/ViewPageArticle.aspx?Session=53765263314B62777A61493D2049536458442F42433865523147482B42487A4B514E673D3D


As you want to have only 16 colors in GrayScale, some adaptations will be needed in thecode, but this is not complicated.

Hope this helps

Cesar