[Lazarus] Weird object variables access [SOLVED] - Delphi mode bug!
pascaldragon at googlemail.com
Wed Oct 25 14:17:49 CEST 2017
Am 25.10.2017 13:06 schrieb "Giuliano Colla via Lazarus" <
lazarus at lists.lazarus-ide.org>:
With older Delphi's up to, I believe, Delphi 7 you have that:
1) the syntax for the assignment of a procedural type is @ProcIdentifier :=
2) If whatever is a pointer, and ProcIdentifier is a Method, the data field
is left untouched
This made it possible, with some dirty tricks to build a proper method
You're relying on implementation details which now often than not is an
accident waiting to happen.
If you want to play around with the data pointer of a method pointer then
cast it to TMethod which a record with a code and data pointer and is the
documented way for this.
In recent Delphi's (someone tested with X7, I did with X10)
1) The syntax @ProcIdentifier := whatever is no more valid. It's no more
possible to assign a pointer to a method type without typecasting.
Probably for good reason.
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