Article # 305, added by Geoworks, historical record
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Object relocation/unrelocation in Vis/Meta objects in VM files.
Q. I have objects spread among different VM blocks. Some of these are Vis objects, and will be connected together via the standard Vis linkage, while other ones will be meta objects, and will contain optrs to some of the Vis objects in their instance data (the Vis objects have optrs to meta objects in their instance data as well). I'm unclear about how much of the object relocation/unrelocation the VM code will do. Will I have to do all the relocation work myself? A. Object relocations are performed whenever the object block is read in from the file. Make sure you call VMPreserveBlocksHandle whenever you call VMAlloc (or VMAttach) for any blocks that will contain objects. Also, make sure your class definitions are set up properly so that object relocations will happen. And, of course, make sure the VMA_OBJECT_ATTRS attributes are set for the file.