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Re: simple TopWindow... branch GUI_APP_MAIN [message #227 is a reply to message #212]

Sun, 04 December 2005 19:01

mirek
Messages: 14267
Registered: November 2005

Ultimate Member

fudadmin wrote on Sat, 03 December 2005 08:14

4. a) "title1 Window, setRect" this way doesn't work:

#include <CtrlLib/CtrlLib.h>

GUI_APP_MAIN
{
    TopWindow().Title("title1").SetRect(0, 0, 260, 80).Run();  // should create window and its title, open and start pumping messages... but
//error C2228: left of '.Run' must have class/struct/union type
        type is 'void'
}

Why? I don't know. We need to ask the creators...

Because SetRect is method of Ctrl, not TopWindow and it returns "void". Therefore:

TopWindow win;
win.Title("Title");
win.SetRect(0, 0, 260, 80);
win.Run();

Actually, what methods are supposed to return *this for method chaining is debatable. Usually they are "property" methods (or "modifiers") that are used to setup some initial state.

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