Thanks Tronic.

What is the difference between dll component and Win32API dll call?

Thanks Nubeat7. With that component is much better. But maximum allowable size for mono to frame primitive is 4096 samples or am I wrong?

Yeap. start angle= 270 is correct.

by Default arrow point straight up

I have no problems with "static" dll call.
But when I'm trying to do that in real time with dynamic buffers I begin to panic...
The trouble is: Need stream fft call size 8192. Frame Synch component send trigger each 256 samples.
So:
1) 8192/256= 32 buffers need to collect to make fft call.
2) 2 ...

Thanks trogluddite!

no luck...
My case solution: Download zlib-1.2.5.win32.zip from here
http://xmlsoft.org/sources/win32/

put all files in x:Ruby_source/ext/zlib and

cd x:Ruby_source/ext/zlib
ruby extconf.rb; nmake; nmake install

Thanks DWB, for a great tutorial, but I still have one question: how to install
pr-zlib?

I made all by your mini-guide and then check:
ruby -v #=> ruby 1.9.3p0 (2011-10-30) [i386-mswin32_90]
gem -v #=> 1.8.11 and no any warnigs( psych installed correctly)

but when I try to install zlib I get ...

I'm try to require custom.so created with ruby 1.9.3p429, but get an error: incompatible library version.
Which version of Ruby is use FlowStone 3.0 and what I need to do to make it compatible?
Thanx.