Reimar Grabowski schrieb:
On Tue, 17 Apr 2012 22:19:45 +0200
Sven Barth <[email protected]> wrote:
type
TMyHackImage = class(TImage)
public
function DestRect: TRect;
end;
var
MyImage: TImage;
r: TRect;
begin
// let's suppose that MyImage contains a TImage instance
r := TMyHackImage(MyImage).DestRect
end;
How should that work?
What does the DestRec function look like?
You're right, above code should not work. The DestRect function has to
be omitted from above declaration, so that the DestRect of the base
class is used.
The elevation of visibility only works for *properties*, i.e.
public
property DestRect;
should work. But often (depending on the compiler) the mere declaration
of an empty derived class allows to access protected members of the base
class.
DoDi
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