Date: Fri, 09 Sep 2005 08:36:01 +0900 (JST)
Message-Id: <20050909.083601.03366715.garrigue at math.nagoya-u.ac.jp>
To: romildo at uber.com.br
Cc: lablgtk at math.nagoya-u.ac.jp
Subject: Re: Constructing a value of type Gdk.color
From: Jacques Garrigue <garrigue at math.nagoya-u.ac.jp>
In-Reply-To: <20050908171000.GA17806 at malaquias>
References: <20050908171000.GA17806 at malaquias>
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From: romildo at uber.com.br

> I am looking for an easy way of constructing
> a value of type Gdk.color, given its red, green
> and blue components.
> 
> Looking in module interface gdk.mli, I see
> only one function that returns a Gdk.color:
> 
>   val Gdk.Color.alloc colormap:Gdk.colormap -> Gdk.Color.spec -> color
> 
> I do not need to alloc the color in a colormap.

The function exists, but is not exported.
You can import it in your own module by declaring

  external color_create : red:int -> green:int -> blue:int -> color
      = "ml_GdkColor"

LablGTK tries to not use that intermediate level: all unallocated
colors can be expressed with Gdk.Color.spec for more generality.

Jacques