desktop capture

[amit code]

hi.. my program is about to capture the dektop by creating compatible dc and compatible bitmap and than convert it from ddb to dib. But I want to compress it before storing it in DAT format. How to proceed with this

prashant

[James R Twine]

Since you mention a specific format (DAT), it is unclear if you mean that you want to scale the image before storing it, or if you really mean data compression.    Scaling can be done in a coarse fashion by drawing the image to a target DC with reduced target width and height values.  GDI+ offers functions that may make a better quality image, as will a dedicated graphics library.    If you really mean data compression, which should happen after the image is first converted to its target format (DAT?), then you can use a library like ZLIB[^].    Lastly, if you meant tape backup (or other offline/removable storage) when you said "DAT", then ZLIB helps there, too.    Peace!

-=- James
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[amit code]

Thanks James for reply.I mean data compression. I will go through the link about ZLIB. Thanx

prashant