fb_alloc_cmap(9) [suse man page]

FB_ALLOC_CMAP(9)					       Frame Buffer Library						  FB_ALLOC_CMAP(9)

NAME

       fb_alloc_cmap - allocate a colormap

SYNOPSIS

       int fb_alloc_cmap(struct fb_cmap * cmap, int len, int transp);

ARGUMENTS

       cmap
	   frame buffer colormap structure

       len
	   length of cmap

       transp
	   boolean, 1 if there is transparency, 0 otherwise

DESCRIPTION

       Allocates memory for a colormap cmap.  len is the number of entries in the palette.

       Returns negative errno on error, or zero on success.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							  FB_ALLOC_CMAP(9)

xcb_alloc_color(3)						   XCB Requests 						xcb_alloc_color(3)

NAME

       xcb_alloc_color - Allocate a color

SYNOPSIS

       #include <xcb/xproto.h>

   Request function
       xcb_alloc_color_cookie_t xcb_alloc_color(xcb_connection_t *conn, xcb_colormap_t cmap, uint16_t red, uint16_t green, uint16_t blue);

   Reply datastructure
       typedef struct xcb_alloc_color_reply_t {
	   uint8_t  response_type;
	   uint8_t  pad0;
	   uint16_t sequence;
	   uint32_t length;
	   uint16_t red;
	   uint16_t green;
	   uint16_t blue;
	   uint8_t  pad1[2];
	   uint32_t pixel;
       } xcb_alloc_color_reply_t;

   Reply function
       xcb_alloc_color_reply_t *xcb_alloc_color_reply(xcb_connection_t *conn, xcb_alloc_color_cookie_t cookie, xcb_generic_error_t **e);

REQUEST ARGUMENTS

       conn	 The XCB connection to X11.

       cmap	 TODO

       red	 The red value of your color.

       green	 The green value of your color.

       blue	 The blue value of your color.

REPLY FIELDS

       response_type
		 The type of this reply, in this case XCB_ALLOC_COLOR. This field is also present in the xcb_generic_reply_t and can be used to
		 tell replies apart from each other.

       sequence  The sequence number of the last request processed by the X11 server.

       length	 The length of the reply, in words (a word is 4 bytes).

       red	 TODO: NOT YET DOCUMENTED.

       green	 TODO: NOT YET DOCUMENTED.

       blue	 TODO: NOT YET DOCUMENTED.

       pixel	 TODO: NOT YET DOCUMENTED.

DESCRIPTION

       Allocates a read-only colormap entry corresponding to the closest RGB value supported by the hardware. If you are using TrueColor, you can
       take a shortcut and directly calculate the color pixel value to avoid the round trip. But, for example, on 16-bit color setups (VNC), you
       can easily get the closest supported RGB value to the RGB value you are specifying.

RETURN VALUE

       Returns an xcb_alloc_color_cookie_t. Errors have to be handled when calling the reply function xcb_alloc_color_reply.

       If you want to handle errors in the event loop instead, use xcb_alloc_color_unchecked. See xcb-requests(3) for details.

ERRORS

       xcb_colormap_error_t
		 The specified colormap cmap does not exist.

SEE ALSO

       xcb-requests(3)

AUTHOR

       Generated from xproto.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.

XCB
								    2014-06-10							xcb_alloc_color(3)