[ROOT] Is it possible to use TAttFill->SetFillAttributes() with undrawn object?

From: Micha D. Niskin (mniskin@yahoo.com)
Date: Wed Jun 04 2003 - 22:36:44 MEST


Hello!

	Thank you for your help so far, I can't tell you how much I appreciate it. I 
have a class which inherits from TObject and TAttFill. The object itself is 
not drawn in a pad, but some of the objects it contains are drawn. I wish to 
be able to use the TAttFillCanvas to change fill attributes for my object 
(where I intend to write my own SetFillColor and SetFillStyle methods). 
However it appears that it needs to have the object selected somewhere to 
access SetFillColor method. Here's what I have tried so far:

	root[0] MyClass *myobj = new MyClass;
	root[1] gPad->SetSelected(myobj);
	root[2] myobj->SetFillAttributes();
	root[3] TList *l = gROOT->GetListOfCanvases();
	root[4] TAttFillCanvas *fill = (TAttFillCanvas*) l->FindObject("R__attfill");
	root[5] fill->SetRefObject(myobj);

>From looking at the source I would think that I would be able to then change 
the fill attributes by clicking a button and then clicking "APPLY" button. 
However this does not work for me. The "gStyle" button does work, however. 
Please, any help would be greatly appreciated. Thanks!

-- 

Regards,
Micha D. Niskin <mniskin@yahoo.com>



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