When you produce a game, there is many options regarding graphics:

• GDI
  • Win32 based.  Used mainly for non-graphic intensive application
• GAPI
  • Gives you a direct access to the frame buffer.  No clipping, back buffering and flipping functionality.
• 3rd Party Library
  • GapiDraw
    • DDraw-like API.  Version for Desktop and PocketPC.
    • www.gapidraw.com
  • PocketHAL 
    • Provides buffered access to the display memory.
    • pockethal.droneship.com
  • FatHammer
    • Optimized 3D API tailored for PocketPC and SmartPhone
    • www.fathammer.com
• Coming up...
  • D3DMobile