Find if pixel is transpatent

Discussion in 'iOS Programming' started by iphonejudy, May 30, 2009.

  1. iphonejudy macrumors 6502

    iphonejudy

    Joined:
    Sep 12, 2008
    #1
    I try to find transparent pixel.

    I looked the coregraphics documentation.

    But there is no method available for finding,Whether a pixel is a tranparent?


    Any one know?
     
  2. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    Assuming you can find the colour of the pixel just check the alpha channel.
     
  3. firewood macrumors 604

    Joined:
    Jul 29, 2003
    Location:
    Silicon Valley
    #3
    I think I once saw a transparent pixel or two on a special "heads-up" display panel at an electronics trade-show.

    Try looking there.
     
  4. iphonejudy thread starter macrumors 6502

    iphonejudy

    Joined:
    Sep 12, 2008

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