I haven't seen your reply.
Le 18/06/2021 à 23:50, James Richters via fpc-pascal a écrit :
So now I have:
TFileName.nMaxFile:= Length(DefaultFileName)+1;
TFileName.lpstrFile:=Pchar(DefaultFileName);
I need the +1 for the #0 at the end of the Pchar, and now it works
fine, and I can have strings as long as they need to be.
I think that this way you tell GetSaveFileNameA that it can write
Length(DefaultFileName)+1 chars in Pchar(DefaultFileName),
but you have only allocated Length(DefaultFileName) chars to
DefaultFileName .
It's unlikely, but this way you can end up with the corruption of the
byte right after the memory block DefaultFileName is pointing to ...
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