DATALINK Dictionary Item

[irneb]

Does anyone know the relevant meanings of the DXF codes for this? I can't find anything in the Help file. Even a vla-object just shows as a IAcadObject with nearly no usefull properties / methods.

As per the attached, I can figure out the 301 and 302 values (the 1st set before the DATAMAP_BEGIN). It seems as if the 170 to 177 is some sort of date/time/stamp - maybe for update purposes. But how and where do you change to formatting options, e.g. to keep formatting linked to Excel / Not.

The reason I'm asking this is that the normal DATALINK command just takes WAY TOO LONG to open the Edit dialog. And I was going to create one so I could easily change those settings without waiting about 5min for the Edit to open for each of 12 DataLinks per drawing.

[irneb]

OK, I've investigated further by making a few Excel Links and changing their properties in that offending Edit dialog (few hours just to set this up for 10 links). Then listing the DXF data of each to compare what has changed. It seems it's something to do with the 91 code's value. Some sort of logior - but up to 8 digits (so not a simple 1 + 2 + 4 + 8 ...).

Unfortunately there's 2x 91 values in the data, the 2nd after the DATAMAP_BEGIN marker. They're always different from each other as well. So what's going on?