TBLT_RETC TBLT_ENTRY BltIx4ReadHeader(TBLT_KH *khPtr); khPtr IO:index file control structureThis routine reloads the index file's header info the TBLT_KH structure.
This routine is essential for multi-access use. It is used in conjuntion with the Lock routines. After locking the index file a call to this routine is necessary to ensure that the memory image of the IX4 header is up-to- date with regard to the disk image, since it may have been altered since last accessed by your code.
This routine is automatically called by BltLockIx4File()
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Return: Non-zero indicates an error, otherwise the header data is reloaded.