[Vala] Problem creating VAPI file for XcbIcccm

[rastersoft <raster rastersoft com>]

Hi all:

I'm creating a VAPI file for xcb_icccm and I have a problem:

I defined the function xcb_icccm_get_wm_class_from_reply as:

    [CCode (cname = "xcb_icccm_get_wm_class_from_reply")]
    public void get_wm_class_from_reply(out WmClassFromReply reply, 
GetPropertyReply input);

Unfortunately, when I try to compile a program that uses it, I receive 
this error:

    CMakeFiles/valawm.dir/window.c.o: In function 
`vala_wm_vala_window_map_request':
    window.c:(.text+0xbca): undefined reference to 
`xcb_icccm_wm_class_from_reply_destroy'
    window.c:(.text+0xc6e): undefined reference to 
`xcb_icccm_wm_class_from_reply_destroy'
    collect2: error: ld returned 1 exit status

It seems that Vala presumes that there must be a "destroy" call that 
complements the "get" call. But there is no such call.

How can I fix this?

Thanks.

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                         RASTER    (Linux user #228804)
raster rastersoft com              http://www.rastersoft.com