On 2012-07-09, Dan Espen wrote:
> Oleksandr Gavenko <gaven...@gmail.com> writes:
>
>> On 2012-07-08, Thomas Adam wrote:
>>
>>> On Sun, Jul 08, 2012 at 05:20:28PM +0300, Oleksandr Gavenko wrote:
>> Now I think that FvwmCpp and FvwmM4 are mostly useless modules.
>
> Little snippet from one of my config files:
>
> #define BACK 21/B9/FD
> #define FORE 22/59/E9
> DestroyDecor recreate DecorVec
> AddToDecor DecorVec
> #if PLANES < 9
> + TitleStyle Centered ActiveUp (Solid cornflowerblue -- Raised) \\
> Inactive (Solid Navy -- Flat) \\
> ActiveDown (Solid dimgrey -- Sunk)
> #else
> /* edge mid-point center */
> + TitleStyle Centered ActiveUp (\\
> SGradient 128 2 rgb:BACK 20 rgb:33/33/aa 70 rgb:FORE)\\
> Inactive (\\
> SGradient 128 2 rgb:BACK 50 rgb:44/44/aa 50 rgb:33/33/77)\\
> ActiveDown (\\
> SGradient 128 2 rgb:00/77/aa 30 rgb:44/88/aa 70 rgb:88/88/aa)
> #endif
>
>
> This came from work where we had some users with Sun workstations
> and 8 bit color, and some with Linux and real graphics cards.
Thanks for answer. Good example!
After some thinking I become to understand that conditional operator is most
powerful part of FvwmCpp and FvwmM4.
By the way you can pre-process .fvwm2rc:
$ m4 <$RC_STORE/.fvwm2rc >~/.fvwm2rc
But you need also provide OSTYPE, REVISION, RELEASE, SCREEN, WIDTH,
X_RESOLUTION, etc macros... to achieve same semantical power of tools.
I trapped in error with this variables when rewrite code:
SetEnv fvwm_img $[FVWM_USERDIR]/images
with:
define(`IMGPATH', `$[FVWM_USERDIR]/images')dnl
as after substitution of:
ImagePath IMGPATH:+
I get:
ImagePath $[/home/user/.fvwm]/images:+
So I run FvwmM4 with '-m4-prefix' and '-m4-prefix-defines':
fvwm -cmd "Module FvwmM4 -m4-prefix -m4-prefix-defines $HOME/.fvwm/config" &
and rewrite code to:
m4_define(`m4_IMGPATH', `$[FVWM_USERDIR]/images')m4_dnl
ImagePath m4_IMGPATH:+
FvwmCpp module have no ability to switch to unique prefix...
But have clear syntax for conditions:
#if COND
1...
#else
2...
#endif
instead of:
ifelse(C_O_N_D,dnl
1...
,dnl
2...
)dnl
and with M4 you must properly escape ',' and ')'...
Also with FvwmCpp you can't compare strings HOSTNAME, OSTYPE, etc with
value...
--
Best regards!
