XCreatePixmapCursor

XCreateFontCursor(3X11)		XLIB FUNCTIONS	      XCreateFontCursor(3X11)



NAME
       XCreateFontCursor, XCreatePixmapCursor, XCreateGlyphCursor - create
       cursors

SYNTAX
       #include <X11/cursorfont.h>

       Cursor XCreateFontCursor(Display *display, unsigned int shape);

       Cursor XCreatePixmapCursor(Display *display, Pixmap source, Pixmap
	      mask, XColor *foreground_color, XColor *background_color,
	      unsigned int x, y);

       Cursor XCreateGlyphCursor(Display *display, Font source_font, Font
	      mask_font, unsigned int source_char, unsigned int mask_char,
	      XColor *foreground_color, XColor *background_color);

ARGUMENTS
       background_color
		 Specifies the RGB values for the background of the source.

       display	 Specifies the connection to the X server.

       foreground_color
		 Specifies the RGB values for the foreground of the source.

       mask	 Specifies the cursor’s source bits to be displayed or None.

       mask_char Specifies the glyph character for the mask.

       mask_font Specifies the font for the mask glyph or None.

       shape	 Specifies the shape of the cursor.

       source	 Specifies the shape of the source cursor.

       source_char
		 Specifies the character glyph for the source.

       source_font
		 Specifies the font for the source glyph.

       x
       y	 Specify the x and y coordinates, which indicate the hotspot
		 relative to the source’s origin.

DESCRIPTION
       X provides a set of standard cursor shapes in a special font named
       cursor.	Applications are encouraged to use this interface for their
       cursors because the font can be customized for the individual display
       type.  The shape argument specifies which glyph of the standard fonts
       to use.

       The hotspot comes from the information stored in the cursor font.  The
       initial colors of a cursor are a black foreground and a white back-
       ground (see XRecolorCursor).

       XCreateFontCursor can generate BadAlloc and BadValue errors.

       The XCreatePixmapCursor function creates a cursor and returns the cur-
       sor ID associated with it.  The foreground and background RGB values
       must be specified using foreground_color and background_color, even if
       the X server only has a StaticGray or GrayScale screen.	The fore-
       ground color is used for the pixels set to 1 in the source, and the
       background color is used for the pixels set to 0.  Both source and
       mask, if specified, must have depth one (or a BadMatch error results)
       but can have any root.  The mask argument defines the shape of the
       cursor.	The pixels set to 1 in the mask define which source pixels
       are displayed, and the pixels set to 0 define which pixels are
       ignored.	 If no mask is given, all pixels of the source are displayed.
       The mask, if present, must be the same size as the pixmap defined by
       the source argument, or a BadMatch error results.  The hotspot must be
       a point within the source, or a BadMatch error results.

       The components of the cursor can be transformed arbitrarily to meet
       display limitations.  The pixmaps can be freed immediately if no fur-
       ther explicit references to them are to be made.	 Subsequent drawing
       in the source or mask pixmap has an undefined effect on the cursor.
       The X server might or might not make a copy of the pixmap.

       XCreatePixmapCursor can generate BadAlloc and BadPixmap errors.

       The XCreateGlyphCursor function is similar to XCreatePixmapCursor
       except that the source and mask bitmaps are obtained from the speci-
       fied font glyphs.  The source_char must be a defined glyph in
       source_font, or a BadValue error results.  If mask_font is given,
       mask_char must be a defined glyph in mask_font, or a BadValue error
       results.	 The mask_font and character are optional.  The origins of
       the source_char and mask_char (if defined) glyphs are positioned coin-
       cidently and define the hotspot.	 The source_char and mask_char need
       not have the same bounding box metrics, and there is no restriction on
       the placement of the hotspot relative to the bounding boxes.  If no
       mask_char is given, all pixels of the source are displayed.  You can
       free the fonts immediately by calling XFreeFont if no further explicit
       references to them are to be made.

       For 2-byte matrix fonts, the 16-bit value should be formed with the
       byte1 member in the most significant byte and the byte2 member in the
       least significant byte.

       XCreateGlyphCursor can generate BadAlloc, BadFont, and BadValue
       errors.

DIAGNOSTICS
       BadAlloc	 The server failed to allocate the requested resource or
		 server memory.

       BadFont	 A value for a Font or GContext argument does not name a
		 defined Font.

       BadMatch	 Some argument or pair of arguments has the correct type and
		 range but fails to match in some other way required by the
		 request.

       BadPixmap A value for a Pixmap argument does not name a defined
		 Pixmap.

       BadValue	 Some numeric value falls outside the range of values
		 accepted by the request.  Unless a specific range is speci-
		 fied for an argument, the full range defined by the argu-
		 ment’s type is accepted.  Any argument defined as a set of
		 alternatives can generate this error.

SEE ALSO
       XDefineCursor(3X11), XLoadFont(3X11), XRecolorCursor(3X11)
       Xlib - C Language X Interface



						      XCreateFontCursor(3X11)