XBlackPixelOfScreen man page on HP-UX

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XBlackPixel*()							XBlackPixel*()

Name
  XBlackPixel,	XBlackPixelOfScreen, BlackPixel, BlackPixelOfScreen – get
  the black pixel value.

Synopsis
  unsigned long XBlackPixelOfScreen(screen)
	   Screen *screen;
  unsigned long XBlackPixel(display, screen_number)
	   Display *display;
	   int screen_number;

Arguments
  screen    Specifies the appropriate Screen structure.

  display   Specifies  a  connection  to  an  X	 server;  returned   from
	    XOpenDisplay().

  screen_number
	    Specifies the appropriate screen number.

Returns
  A pixel value.

Description
  Each screen has a default colormap which has pixel values for black and
  white already allocated.  These functions return the black pixel value.
  Note	that this pixel value only represents black in a screen's default
  colormap.

  XBlackPixel() and XBlackPixelOfScreen() are equivalent except that they
  require different arguments.	One requires a pointer to a Screen struc‐
  ture, while the other requires a screen  number.   Unless  you  already
  have the pointer to a Screen structure in a variable, XBlackPixel*() is
  more convenient.

  The C language macros BlackPixel() and BlackPixelOfScreen() are equiva‐
  lent and slightly more efficient.

See Also
  XWhitePixel*(), XWhitePixelOfScreen(), XDefaultColormap*().

Xlib - Macro Equivalents					XBlackPixel*()
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