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Portable Network Graphic  |  1990-09-25  |  13.7 KB  |  551x727  |  1-bit (2 colors)
   ocr: Think of the GWorld structure as an extension to the Gratrort structure, contaning the port intormation along with the device data and: some extra: state intormation. In: most cases, a wworldrtr can be used interchangeably with a CGrafPtr, which makes converting applications quite easy. At this point, however, Apple is keeping the structure of an ottscreen graphics world private to allow for futher expansion. For: instance, in the following section of Developer Technical Support's $ sample program FracApp, the: new calls were implemented withowt changing the document's s data structure at all. ...