# Rcairo 1.8.3

**URL:** <https://www.ruby-forum.com/t/rcairo-1-8-3/193918>\
**Category:** Ruby\
**Created:** [August 26, 2010, 3:20pm UTC](https://www.ruby-forum.com/t/rcairo-1-8-3/193918 "2010-08-26T15:20:39Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Kouhei\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/f4b2a3/32.png) [@Kouhei\_S](https://www.ruby-forum.com/u/Kouhei_S)\
**Post date:** [August 26, 2010, 3:20pm UTC](https://www.ruby-forum.com/t/rcairo-1-8-3/193918/1 "2010-08-26T15:20:39Z")

</div>

Hi,

I released rcairo(\*1) 1.8.3 that supports Ruby 1.9.2:  
[http://raa.ruby-lang.org/project/rcairo/](http://raa.ruby-lang.org/project/rcairo/)

(\*1) A library to use cairo(\*2) from Ruby.

(\*2) A 2D graphics library that is used by  
GTK+/Firefox/WebKit/… as rendering backend and worked  
on multi-platform. cairo can output PDF, PNG, SVG and  
so on too.

[http://cairographics.org/rcairo/](http://cairographics.org/rcairo/)

[http://cairographics.org/releases/rcairo-1.8.3.tar.gz](http://cairographics.org/releases/rcairo-1.8.3.tar.gz)

[http://cairographics.org/releases/rcairo-1.8.3.tar.gz.md5](http://cairographics.org/releases/rcairo-1.8.3.tar.gz.md5)  
ddc6470c59c3a2adcda836544b4dc5bd rcairo-1.8.3.tar.gz

[http://cairographics.org/releases/rcairo-1.8.3.tar.gz.sha1](http://cairographics.org/releases/rcairo-1.8.3.tar.gz.sha1)  
0b4bbfcb3080feb7afef6f6b12e634eff35f3a80 rcairo-1.8.0.tar.gz

For Windows user:  
% gem install cairo

NOTE: The rcairo repository had been movoed to GitHub.  
[GitHub - rcairo/rcairo: The Ruby bindings for cairo.](http://github.com/rcairo/rcairo)

## New Features

- Support cairo 1.8.10.
- Support Ruby 1.9.2. (reported by Tasuku SUENAGA and kimura wataru)
- Fix RGV → HSV conversion. (patch by Yuta Taniguchi)
- Support Cairo::Color as Hash key.

## Thanks

- Yuta Taniguchi
- Tasuku SUENAGA
- kimura wataru

Thanks,

---

<div class="post-metadata">

**Author:** ![Kouhei\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/f4b2a3/32.png) [@Kouhei\_S](https://www.ruby-forum.com/u/Kouhei_S)\
**Post date:** [August 26, 2010, 5:45pm UTC](https://www.ruby-forum.com/t/rcairo-1-8-3/193918/2 "2010-08-26T17:45:14Z")

</div>

> For Windows user:  
> % gem install cairo

I installed this in windows

C:\programming\ruby\test\_cairo\lib\>ruby -v  
ruby 1.9.2p0 (2010-08-18) [i386-mingw32]

When I run this I get the following error:

This application has failed to start because libcairo-2.dll was not  
found.  
Re-installing the application may fix this problem

---

<div class="post-metadata">

**Author:** ![Kouhei\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/f4b2a3/32.png) [@Kouhei\_S](https://www.ruby-forum.com/u/Kouhei_S)\
**Post date:** [August 27, 2010, 12:01am UTC](https://www.ruby-forum.com/t/rcairo-1-8-3/193918/3 "2010-08-27T00:01:06Z")

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Hi,

In [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
“Re: [ANN] rcairo 1.8.3” on Fri, 27 Aug 2010 00:44:48 +0900,  
Dominic S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> When I run this I get the following error:
> 
> This application has failed to start because libcairo-2.dll was not found.  
> Re-installing the application may fix this problem

Thanks for trying it.  
Could you download  
\*  
[http://ftp.gnome.org/pub/gnome/binaries/win32/dependencies/fontconfig\_2.8.0-2\_win32.zip](http://ftp.gnome.org/pub/gnome/binaries/win32/dependencies/fontconfig_2.8.0-2_win32.zip)  
\*  
[http://ftp.gnome.org/pub/gnome/binaries/win32/dependencies/freetype\_2.4.2-1\_win32.zip](http://ftp.gnome.org/pub/gnome/binaries/win32/dependencies/freetype_2.4.2-1_win32.zip)  
and extract them into  
#{GEM\_HOME}/1.9.1/gems/cairo-1.8.3/vendor/local/  
?

Here are correct places:  
#{GEM\_HOME}/1.9.1/gems/cairo-1.8.3/vendor/local/bin/freetype6.dll  
#{GEM\_HOME}/1.9.1/gems/cairo-1.8.3/vendor/local/bin/libfontconfig-1.dll

Then please try “require ‘cairo’” again.

If the above instruction makes rcairo work on Windows, I  
will update rcairo gem for Windows.

Thanks,