Re: gtk 1.2 and gtk 2.4

[xzhou softintegration com (Xiaodong Zhou)]

Hi Owen,

I checked the install GTK 2.4 header files.
It seems that the total number of lines for GTK 2.4 is similar to
Windows header files, it is about 40,000 lines. You are right
on the number of lines.

But I am not sure why it runs slow for GTK applications.
Do you know how many functions are used for GTK+?

Thank you.

Xiaodong


> On Mon, 2005-03-07 at 15:41 -0800, Xiaodong Zhou wrote:
> > Hi Owen,
> > 
> > > > Hello,
> > > > 
> > > > C/C++ interpreter Ch has bindings to GTK 2.4.
> > > > We noticed that the speed of running GTK application in Ch is very slow. 
> > > > However, the speed for bindings to GTK 1.2 is fine. 
> > > > 
> > > > The reasons I noticed is that the header files in the new release (2.4)
> > > > contains many internal functions. They are too big and takes
> > > > too much time to interprete in Ch.
> > > 
> > > There are almost no internal functions in the GTK+ header files that
> > > I'm aware of. (A quick grep though the GTK+ headers reveals about
> > > 100 functions starting with _gtk as compared to about 2700 public
> > > entry points. So, a very small fraction.)
> > > 
> > > GTK+-2.x is a much more complex system than GTK+-1.2; there really
> > > isn't much of a way around that... it's bigger because it does 
> > > more. 
> > > 
> > > To use it from an interpreter, you'll have to figure out some way
> > > of quickly processing the 42,000 lines of header files. (Up from
> > > around 22,000 in GTK+-1.2)
> > 
> > I use "wc glib/* gdk/* gtk/* ", there are about 100,000 lines of header
> > files for GTK 2.4. 
> 
> The appropriate number of lines of header files is based on the
> header files that are *installed*. If you count lines uninstalled
> you'll count things like lib/glib/gunichartables.h -- 
> 11,000 lines of Unicode property data structures.
> 
> If you are actually following #include lines, then these headers
> shouldn't get included, so probably aren't the reason for your 
> problems.
> 
> > So you mean there are almost no internal functions/structures in 
> > GTK+ header files?
> > 
> > It appears that msft's VC++  header files
> > only contain external functions and
> > structures, macros only
> > for Windows API, not for internally ones
> 
> Please site an example of things in the *installed* header files 
> that you think are private. I'm not aware of such.
> 
> > In X11/Motif,the private one header files are used as
> > XXX_p.h, which corresponds to XXX.h.
> > Application developers and programs do not need XXX_p.h.
> > They are not distributed for application developers.
> > 
> > The GUI C applications using X11/Motif, Win32 API can be handled 
> > without execution speed problem in Ch. Not sure if GTK+ can have
> > smaller header files? 
> 
> windows.h doesn't define a full toolkit on the same scale as GTK+.
> Motif is also pretty limited compared to GTK+.
> 
> Regards,
> 						Owen
> 
>