[Qt-interest] Qt guide for MFC Programmers...

[BRM]

Well, perhaps it should be Win32/ATL/MFC then...

Yeah - Qt does a lot of stuff that doesn't necessarily compare. I'd just like 
something that would help ease the transitions where they do compare.
For example, something comparing Win32/ATL/MFC graphics coordinates versus the 
Qt Coordinate system; or QThread vs ATL Threads; or Qt Signals/Slots vs. Win32 
PostMessage/SendMessage. There's a host of subjects that would be involved, some 
building on others first.

Fact is, even Qt is a bit of a wrapper around some of these things, but one that 
provides a consistent cross-platform interface and that makes proper use of C++ 
concepts. But for the discussion/etc. it would only have to focus on the parts 
that are common to both - not everything under the sun concerning Qt.

I'd venture that others would likely find it useful for something similar for 
Gtk, or Cocoa/Carbon, and other highly popular tool kits.

Yes, it's great to just jump in and learn (that's what I did), but it would also 
be highly beneficial to have a reference that one can go to and say, well I did 
this under ToolKit X, now how do I do that under Qt?

Ben



----- Original Message ----
> From: Jason H <scorp1us at yahoo.com>
> To: BRM <bm_witness at yahoo.com>; qt-interest <qt-interest at trolltech.com>
> Sent: Tue, January 18, 2011 12:22:32 PM
> Subject: Re: [Qt-interest] Qt guide for MFC Programmers...
> 
> There is barely a comparison. MFC was C++ wrappers around the C WinAPI. Qt is 
> object oriented from the ground up. This was the biggest conversion for me  as 
>a 
>
> former MFC developer. For core philosophy stuff, I'd probably recommend  
>"Design 
>
> Patterns in Qt". As for GUI stuff, the concepts in QtGUI are  similar, except 
> where they are different due to Qt making proper use of C++  concepts 
> (inheritance and polymorphism). 
> 
> 
> One big thing I notice  is MS used a lot of interface classes (I--- classes). 
>Qt 
>
> doesn't do this  except with the QAbstract* classes. a
> 
> 
> The other thing is Qt makes  heavy use of parenting for QObject derived 
>classes. 
>
> After you combine Qt's  MetaObjectCompiler (MOC) you get something that behaves 
>
> more like C# than  C++.
> 
> I can't tell you everything you need to  know, but if you find  yourself 
>writing 
>
> a lot of code for a simple task, then you're probably doing  something wrong.
> 
> HTH
> 
> 
> ----- Original Message ----
> From: BRM  <bm_witness at yahoo.com>
> To:  qt-interest <qt-interest at trolltech.com>
> Sent:  Tue, January 18, 2011 9:39:53 AM
> Subject: [Qt-interest] Qt guide for MFC  Programmers...
> 
> Anyone know of a good reference (book, website) for  helping MFC programmers 
> convert to Qt? I'd like to recommend/provide it to a  friend.
> 
> I'm not looking for documentation on the Qt MFC conversion  utility; but 
> something to help with mindset switching - going over things  like 
>PostMessage() 
>
> is equivalent to a Queued Q_EMIT call, while  SendMessage() is equivalent to 
>all 
>
> other Q_EMIT calls, and  such.
> 
> TIA,
> 
> Ben
> 
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>        
>