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Why? For an import lib, you should instead simply create a new import lib file for C++Builder using the IMPLIB (32bit) or MKEXP (64bit) tool on the DLL itself. There is no point in converting import libs, only static libs.

ICS does not support any mobile platforms, only Mac OS-X now and Linux Ubuntu with the next major release next year. Angus

They control the code for all processes involved. That's the crucial difference.

I guess, that is as designed. When you click on a date that date is selected. When you click again on the same date it is unselected and the Date property is set to NullDate: NullDate: TDate = -700000; You can avoid that when you set SelectionMode to smNone.

For size reasons. Memory mapped files let you - use contiguous arrays bigger than available RAM, mapping file-backed data into virtual 64-bit address space - use simple pointer arithmetics to access individual bytes, it is dead easy to implement SetBit() GetBit() etc - let the operating system's cache algorithm handle the intricacies of swapping pages in and out (LRU/MRU etc) - benefit from the speed and low latency of modern SSD's - have the data on disk, ready to be re-used Speed-wise this is only an option if the operating system can minimize swapping so accessing the elements shouldn't be totally random. If the probability of accessing an element is some kind of bell curve then it might just work. [edit] typo.

Now that you mention it: There was some Unicode stuff involved somewhere else in the unit (type casts from AnsiChar to Char), so it can't have been Delphi 2007 ... Must have been Delphi 10.2 then. (Sorry, I have been trying to get somebody competent at Deutsche Telekom on the phone for the last 2 hours. This is getting on my nerves and wreaking havoc with my concentration.)