parameters - How to get a method param name array/list in Delphi? -

is there way names of parameters of given method of class/object in array/delimited string in delphi 7? somehow this:

var   s : string;   asl : tstringlist; begin   ...   // using rtti calls in tmethodutility.collectparamnames   s := tmethodutility.collectparamnames( tstringlist.addobject );   // or   tmethodutility.collectparamnames( tstringlist.addobject, asl );   ... end; 

thanks in advance!

it technically possible (otherwise ide's form designer not generate code component event handlers @ design-time), however, there important caveats hinder goal (and make particular example in question impossible resolve):

• the necessary rtti generated properties declared published (such component events). rtti not generated methods (even published ones), or properties not published.

• tobject has public methodaddress() method getting memory address of published method (the dfm streaming system uses when hooking event handlers), cannot necessary rtti method pointer alone.

if can match given method pointer value of published event, can extract parameter names event's rtti. obtain typinfo.ppropinfo pointer event using typinfo.getpropinfo() function, pass proptype field value typinfo.gettypedata() function typinfo.ptypedata pointer, , can iterate through paramlist field (which array of records containing paramname , typename fields).

see following blog article on topic more details:

getting parameters of published methods.

for attempting, general-purpose solution require extended rtti introduced in delphi 2010 , not available in delphi 7. extended rtti not limited published items, , much more detailed old-style rtti provides.