diff options
Diffstat (limited to 'nuttx/graphics/nxmu/nx_releasebkgd.c')
-rw-r--r-- | nuttx/graphics/nxmu/nx_releasebkgd.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/nuttx/graphics/nxmu/nx_releasebkgd.c b/nuttx/graphics/nxmu/nx_releasebkgd.c new file mode 100644 index 000000000..972585663 --- /dev/null +++ b/nuttx/graphics/nxmu/nx_releasebkgd.c @@ -0,0 +1,105 @@ +/**************************************************************************** + * graphics/nxmu/nx_releasebkgd.c + * + * Copyright (C) 2008-2009, 2011-2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <errno.h> +#include <debug.h> + +#include <nuttx/nx/nx.h> +#include "nxfe.h" + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nx_releasebkgd + * + * Description: + * Release the background window previously acquired using nx_openbgwindow + * and return control of the background to NX. + * + * Input Parameters: + * hwnd - The handle returned (indirectly) by nx_requestbkgd + * + * Return: + * OK on success; ERROR on failure with errno set appropriately + * + ****************************************************************************/ + +int nx_releasebkgd(NXWINDOW hwnd) +{ + FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd; + struct nxsvrmsg_releasebkgd_s outmsg; + +#ifdef CONFIG_DEBUG + if (!wnd) + { + errno = EINVAL; + return ERROR; + } +#endif + + /* Request access to the background window from the server */ + + outmsg.msgid = NX_SVRMSG_RELEASEBKGD; + return nxmu_sendserver(wnd->conn, &outmsg, sizeof(struct nxsvrmsg_releasebkgd_s)); +} + |