GXPD 10 - QuickDraw GX and DoesPaperFit Message (1-May-95)
Q Does QuickDraw GX send the DoesPaperFit message when I'm setting up
input-tray dialogs, or is the driver supposed to do this? If GX doesn't, it is
possible for users to use completely invalid paper sizes, which can violently
crash most raster drivers.
A GX sends the DoesPaperFit message in the default implementation of the Input
Trays... dialog to constrain the configuration options, and drivers that
perform their own Input Trays... dialog should do the same. A driver should
override this message if it needs other than the default logic, which responds
that everything fits.
The packing buffer size specified in the 'rpck' resource is set to the expected
maximum size needed. Unfortunately, this is far smaller than what's needed when
handling larger-than-expected paper sizes. To work around this, you can set the
packing buffer size so that it can accommodate the largest paper size the
printer can use.
