Réf. : Re: X11 unusable because too slow

[frederic.bron at alcan.com]

>> - from a Unix machine (OSF1 V5.1 alpha Tru64) I build with g++ 3.4.4 a =

>> unix version (wxX11)
> This is probably a quite slow machine, isn't it?

It is a multiprocessor (32) 64 bits machine 5-6 year old. Equivalent to =

Pentium 3 1 GHz rougthly.

>> My program creates all controls dynamically because the full layout is =

>> described in an input file given by the user

> Just curious, have you considered using XRC?

No because the controls represent what is in the user files. And the =

program is supposed to simplify the creation of a text file. Then the =

files are not fixed for ever but change each time the user runs the =

program.

>> - On cygwin and unix (wxX11):
>>    1. the program is extremely slow (what takes less than 0.5 s on =

windows =

>> takes 30 s on cygwin and even more on unix),
>>    2. wxChoice controls on a wxScrolledWindow become full gray (text is =


>> hidden and control does not work anymore) when the window is scrolled
>
> wxX11 is officially in beta stage, the "production quality" Unix port is
>wxGTK. wxX11 under Cygwin is not even in beta, it's really a totally
>experimental version which is not much tested nor attracts a lot of
>development interest for the understandable reasons (namely that it's
>totally useless in practice and I have no idea why would anyone use it).

I agree the cygwin version is not usefull. It just easier for me than =

logging on the unix computer but it is absolutely not usefull!

> I'm a bit surprised to hear that wxX11 is so slow for you under Unix,
>there could be some OSF1-specific problem here but I am not sure if there
>is really a bug here, you'd need to test wxX11 under Linux to confirm =

this.
>As for (2) it does look like a bug in wxX11 but, again, testing under =

Linux
>(or another of more common Unix systems) would be nice.

I will try to find a linux machine. I would be very much pleased to work =

with linux as I did during my PhD but I work now for a multi-national firm =

and you guess that Windows is the standard there...

>> I have tried wxMotif but the layout becomes a real mess

> wxMotif does have problems and is not used much nowadays neither. There
>are important projects still using it though, but it doesn't support all
>the latest wxWidgets features (often because Motif itself doesn't). The
>layout should work in it however, you might want to run the sizer sample
>for example.

OK, I will forget this solution

>> I and I have not =

>> been able to compile GTK on my unix machine because I get the following =


>> message when executing the configure script for glib 2.12.4:
>> configure: error:
>> *** You must have either have gettext support in your C library, or use =


>> the
>> *** GNU gettext library. (
http://www.gnu.org/software/gettext/gettext.html
>> =

>> However, I have installed gettext properly!
>
> But glib configure probably doesn't find it. Anyhow, this is not really =

a
>wxWidgets problem but a GTK+ one, I'm sure you could find help on =

gtk-users
>mailing list -- it should be possible to build GTK+ on OSF1, I did it
>myself some (admittedly long) time ago.

I will try again.

>> Then I am a bit disappointed because I spent quite a lot of time =

writting =

>> my application thinking it would be portable and finally, I get only a =

>> Windows version.

> This is a bad strategy for cross-platform development, it's much better =

to
> test the program continuously than finishing it first on only one =

platform
> and then porting it to the other. Of course, in theory what you did =

should
> work too (and maybe it does with wxGTK) but in practice you could have =

bugs
> in your code which were hidden under wxMSW for some reason but could =

show
> up on other ports.

I fact I have always developed the program building both versions but at =

the beginning, with few controls, the speed difference was not so =

critical.

>> I must do something wrong, could you help?

> I think the main thing you do wrong is to not use wxGTK. There might be
>others, but the 3 main wx ports are wxMSW, wxGTK and wxMac. The others =

may
>work too and people do use them but they're not as well maintained as the =

3
>main ones.

My next task is then to success installing GTK.

Many thanks for so quick answer.

F. Bron

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