[fpc-devel] Function Redirection Problem in Interfaces

[Leandro Conde]

Reproduction Procedure: 

	1) Define a IBase interface and put some methods int it (Base1,
Base2, Base3).
	2) Then define two more interfaces derived from IBas (IDerived1,
IDerived2).
	3) All the methods are called differently, so, is not a problem of
ambiguous overloading.
	4) Then make a class to implement the two derived interfaces
(TTestCase).
	5) Then in that class provide two sets for the IBase's methods, and
implement each of the interfaces redirecting it's methods to the respective
set.

For a real world example, see the code in:
http://cvs.sf.net/viewcvs.py/sil/152/

this [1, http://tinyurl.com/r2mzv]: 
	source/lib/SilLiDataType.pas

In that context is: 
	IBase == IDataTypecast, and 
	IDerived1 == IDataConvert, 
	IDerived2 = IDataAssing. 

All this are implemented in[2, http://tinyurl.com/r9w9n]: 
	source/lib/SilLiDataType.pas

And see[3, http://tinyurl.com/zrvow]: 

programs/
  demos/
    lib/
      framework/
        conversion/
          FmTestBaseFrameworkConversion.pas

for an example of how it is used.

Thanks, hope this helps.
Leandro.

[1] 	
http://cvs.sf.net/viewcvs.py/sil/152/source/lib/SilLiDataType.pas?rev=1.7&vi
ew=markup

[2] 
http://cvs.sf.net/viewcvs.py/sil/152/source/lib/SilLkDataHandler.pas?rev=1.9
&view=markup

[3]
http://cvs.sf.net/viewcvs.py/sil/152/programs/demos/lib/framework/conversion
/FmTestBaseFrameworkConversion.pas?view=markup
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