CGContextRef/GrafPtr -> global screen coordinates

Discussion in 'Mac Programming' started by czonmac, Aug 27, 2008.

  1. macrumors newbie

    Joined:
    Aug 27, 2008
    #1
    Hi,

    I am writting a plug-in for Adobe Acrobat. In the plug-in I want to place a custom dialog at a specific position.
    That position has to be specified in (global) screen coordinates.

    Unfortunately, I can not get this position directly via the Acrobat SDK. What I can get is a CGrafPtr (which I can convert to a CGContextRef) to draw on the page. This offset would be enough to find the coordinates I need.

    Is there any way to translate between GrafPtr/CGContextRef (either of them would be sufficient .) to screen coordinates?
    So e.g. I start drawing a rectangle at point (0,0) -> how can I get the absolute screen coordinate where this rectangle is located - or where the port has it's origin?

    Thank you very much for your help in advance.

    Regards

    Michael
     

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