229 lines
7.4 KiB
C
229 lines
7.4 KiB
C
/****************************************************************************
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* libs/libnx/nxmu/nx_cursor.c
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*
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* Copyright (C) 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <assert.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxmu.h>
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#include <nuttx/nx/nxcursor.h>
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#if defined(CONFIG_NX_SWCURSOR) || defined(CONFIG_NX_HWCURSOR)
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxcursor_enable
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*
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* Description:
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* Enable/disable presentation of the cursor
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*
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* Input Parameters:
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* hnd - The server handle returned by nx_connect()
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* enable - True: show the cursor, false: hide the cursor.
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*
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* Returned Value:
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* OK on success; ERROR on failure with errno set appropriately
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*
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****************************************************************************/
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int nxcursor_enable(NXHANDLE hnd, bool enable)
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{
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FAR struct nxmu_conn_s *conn = (FAR struct nxmu_conn_s *)hnd;
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struct nxsvrmsg_curenable_s outmsg;
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int ret;
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/* Send the cursor enable/disable message */
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outmsg.msgid = NX_SVRMSG_CURSOR_ENABLE;
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outmsg.enable = enable;
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ret = nxmu_sendserver(conn, &outmsg, sizeof(struct nxsvrmsg_curenable_s));
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if (ret < 0)
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{
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gerr("ERROR: nxmu_sendserver() returned %d\n", ret);
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set_errno(-ret);
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return ERROR;
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}
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return OK;
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}
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/****************************************************************************
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* Name: nxcursor_setimage
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*
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* Description:
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* Set the cursor image.
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*
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* The image is provided a a 2-bits-per-pixel image. The two bit encoding
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* is as follows:
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*
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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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*
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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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*
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* Input Parameters:
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* hnd - The server handle returned by nx_connect()
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* image - Describes the cursor image in the expected format.
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*
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* Returned Value:
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* OK on success; ERROR on failure with errno set appropriately
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*
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****************************************************************************/
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#if defined(CONFIG_NX_HWCURSORIMAGE) || defined(CONFIG_NX_SWCURSOR)
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int nxcursor_setimage(NXHANDLE hnd, FAR const struct nx_cursorimage_s *image)
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{
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FAR struct nxmu_conn_s *conn = (FAR struct nxmu_conn_s *)hnd;
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struct nxsvrmsg_curimage_s outmsg;
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int ret;
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DEBUGASSERT(hnd != NULL && image != NULL);
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/* Send the new cursor image to the server */
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outmsg.msgid = NX_SVRMSG_CURSOR_IMAGE;
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outmsg.image.size.w = image->size.w;
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outmsg.image.size.h = image->size.h;
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outmsg.image.image = image->image; /* The user pointer is sent, no data */
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nxgl_colorcopy(outmsg.image.color1, image->color1);
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nxgl_colorcopy(outmsg.image.color1, image->color1);
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nxgl_colorcopy(outmsg.image.color1, image->color1);
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/* We will finish the teardown upon receipt of the DISCONNECTED message */
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ret = nxmu_sendserver(conn, &outmsg, sizeof(struct nxsvrmsg_curimage_s));
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if (ret < 0)
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{
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gerr("ERROR: nxmu_sendserver() returned %d\n", ret);
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set_errno(-ret);
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return ERROR;
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}
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return OK;
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}
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#endif
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/****************************************************************************
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* Name: nxcursor_setposition
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*
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* Description:
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* Move the cursor to the specified position
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*
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* Input Parameters:
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* hnd - The server handle returned by nx_connect()
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* pos - The new cursor position
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*
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* Returned Value:
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* OK on success; ERROR on failure with errno set appropriately
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*
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****************************************************************************/
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int nxcursor_setposition(NXHANDLE hnd, FAR const struct nxgl_point_s *pos)
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{
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FAR struct nxmu_conn_s *conn = (FAR struct nxmu_conn_s *)hnd;
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struct nxsvrmsg_curpos_s outmsg;
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int ret;
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DEBUGASSERT(hnd != NULL && pos != NULL);
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/* Send the new cursor position to the server */
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outmsg.msgid = NX_SVRMSG_CURSOR_SETPOS;
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outmsg.pos.x = pos->x;
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outmsg.pos.y = pos->y;
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/* We will finish the teardown upon receipt of the DISCONNECTED message */
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ret = nxmu_sendserver(conn, &outmsg, sizeof(struct nxsvrmsg_curpos_s));
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if (ret < 0)
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{
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gerr("ERROR: nxmu_sendserver() returned %d\n", ret);
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set_errno(-ret);
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return ERROR;
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}
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return OK;
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}
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/****************************************************************************
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* Name: nxcursor_get_position
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*
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* Description:
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* Return the current cursor position.
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*
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* CAUTION: The current cursor position is not updated until the display
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* is actually changed. Due to asynchronies caused by queue, the new
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* current cursor position may not match the cursor position set until
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* the client and server are syncrhonized.
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*
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* Input Parameters:
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* hnd - The server handle returned by nx_connect()
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* pos - The location to return the cursor position
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*
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* Returned Value:
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* OK on success; ERROR on failure with errno set appropriately
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*
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****************************************************************************/
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int nxcursor_get_position(NXHANDLE hnd, FAR struct nxgl_point_s *pos)
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{
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/* REVISIT: The cursor position is not accessible from here. It is in hnd,
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* be we don't have the definitions exposed to get it.
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*/
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#warning Missing logic
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set_errno(ENOSYS);
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return ERROR;
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}
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#endif /* __INCLUDE_NUTTX_NX_NXCURSOR_H */
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