cardNo vs volRefNum

[Ed Greenberg]

Many calls, such as DmFindDatabase, refer to a cardNo, which is usually 0, but could be a memory card.

To find out what cards are available on the device (in addition to 0) one seems to call VFSVolumeEnumerate in a loop until you run out of volumes. (I realize that in present day hardware, the choices are 0 and 1).

Is the volRefNum returned by VFSVolumeEnumerate is the same number as the cardNo required by the Dm... functions?

On the other hand, perhaps the number I want is the slotRefNum that is returned by ExpSlotEnumerate.

Anybody know?

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