51 lines
1.7 KiB
ReStructuredText
51 lines
1.7 KiB
ReStructuredText
================================
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NX Cursor Support (``NXCURSOR``)
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================================
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.. c:function:: int nxcursor_enable(NXHANDLE hnd, bool enable)
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Enable/disable presentation of the cursor. The disabled
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cursor still exits and still may be controlled, but is not visible on
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the display.
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:param hnd:
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The server handle returned by :c:func:`nx_connect`.
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:param enable: The new cursor position
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:return: OK on success; ERROR on failure with errno set appropriately.
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.. c:function:: int nxcursor_setimage(NXHANDLE hnd, FAR const struct nx_cursorimage_s *image)
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Set the cursor image.
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The image is provided a a 2-bits-per-pixel image. The two bit incoding
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is as following:
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- 00: The transparent background.
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- 01: Color1: The main color of the cursor.
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- 10: Color2: The color of any border.
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- 11: Color3: A blend color for better imaging (fake anti-aliasing).
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**NOTE:** The NX logic will reference the user image buffer repeatedly.
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That image buffer must persist for as long as the NX server connection
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persists.
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:param hnd: The server handle returned by :c:func:`nx_connect`
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:param image:
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An instance of ``struct struct nx_cursorimage_s`` that describes the
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cursor image. See ``<nuttx/nx/nxcursor.h>`` for the full description
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of this structure.
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:return: OK on success; ERROR on failure with errno set appropriately.
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.. c:function:: int nxcursor_setposition(NXHANDLE hnd, FAR const struct nxgl_point_s *pos)
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Move the cursor to the specified position.
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:param hnd: The server handle returned by :c:func:`nx_connect`
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:param pos: The new cursor position
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:return: OK on success; ERROR on failure with errno set appropriately.
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