[lazarus] Name Confilct in fpc

[Peter Dyson]

----- Original Message ----- 
From: Marc Weustink <Marc.Weustink at cuperus.nl>
> 
> BTW. Have you tried this in delphi ?
> 
> Marc
> 
The code works in Delphi... it was a problem I came across trying
to convert some working delphi code mwCustomEdit 92a suite of
components that I had sucsessfully compiled and installed into D5.

Not tried it in D4 yet but will try to do that later!
The code given was just a simpler example of the problem.
It seems that Delphi will find a mismatch in the calling convention 
in the current namespace scope, and then  look for the same name
in a higher namespace until it finds a match.

The other thing I found after this which Delphi will happily handle 
but which fpc throws up on.....   

type
  TSomeObject = class(TObject)
  private
    FSomeVar: TSomeType;
    ........
  public
    procedure DontWork(Dummy: String; SomeVar: TSomeType);
    procedure ......
  published
    property SomeVar: TSomeType Read FSomeVar; 
  end;

The Fix is easy...

procedure DontWork(Dummy: String; aSomeVar: TSomeType);

but when working with code such as the mwCustomEdit and trying to 
keep it so that the sources will compile under delphi and fpc
{$IFDEF MWE_FPC}a{$ENDIF}SomeVar gets a bit ugly as
I am trying to keep track of what changes I make, and not just 
'fix' it, as it records the problems encountered in porting delphi
code.

This seems to also be a namespace related problem. I am only 
guessing, but I think the compiler must keep a list of single names
unless they have been flagged as overloaded, a local encounter
of a name replaces a more global name and the compiler can no 
longer resolve the higher namespace variable.

Ok while on the workings of the compiler, another question...
As the compiler seems to have an internal method of translating
SysUtils to SysLinux, is there any mechanism to be able to 
instruct the compiler to translate user space unit names..
the obvious example of course Windows -> LclLinux. or even
LclInt -> gtkInt | kdeInt. The use of an itermediate object to do
desktop environments would then be deprecated.

Enough ramblings for now gotta get back to work..

peter