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| <div class="section" id="nx-cursor-support-nxcursor"> |
| <h1>NX Cursor Support (<code class="docutils literal notranslate"><span class="pre">NXCURSOR</span></code>)<a class="headerlink" href="#nx-cursor-support-nxcursor" title="Permalink to this headline">¶</a></h1> |
| <dl class="c function"> |
| <dt id="c.nxcursor_enable"> |
| int <code class="sig-name descname">nxcursor_enable</code><span class="sig-paren">(</span><a class="reference internal" href="nx.html#c.NXHANDLE" title="NXHANDLE">NXHANDLE</a> <em>hnd</em>, bool <em>enable</em><span class="sig-paren">)</span><a class="headerlink" href="#c.nxcursor_enable" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Enable/disable presentation of the cursor. The disabled |
| cursor still exits and still may be controlled, but is not visible on |
| the display.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>hnd</strong> – The server handle returned by <a class="reference internal" href="nx.html#c.nx_connect" title="nx_connect"><code class="xref c c-func docutils literal notranslate"><span class="pre">nx_connect()</span></code></a>.</p></li> |
| <li><p><strong>enable</strong> – The new cursor position</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p>OK on success; ERROR on failure with errno set appropriately.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.nxcursor_setimage"> |
| int <code class="sig-name descname">nxcursor_setimage</code><span class="sig-paren">(</span><a class="reference internal" href="nx.html#c.NXHANDLE" title="NXHANDLE">NXHANDLE</a> <em>hnd</em>, FAR <em class="property">const</em> <em class="property">struct</em> nx_cursorimage_s *<em>image</em><span class="sig-paren">)</span><a class="headerlink" href="#c.nxcursor_setimage" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Set the cursor image.</p> |
| <p>The image is provided a a 2-bits-per-pixel image. The two bit incoding |
| is as following:</p> |
| <ul class="simple"> |
| <li><p>00: The transparent background.</p></li> |
| <li><p>01: Color1: The main color of the cursor.</p></li> |
| <li><p>10: Color2: The color of any border.</p></li> |
| <li><p>11: Color3: A blend color for better imaging (fake anti-aliasing).</p></li> |
| </ul> |
| <p><strong>NOTE:</strong> The NX logic will reference the user image buffer repeatedly. |
| That image buffer must persist for as long as the NX server connection |
| persists.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>hnd</strong> – The server handle returned by <a class="reference internal" href="nx.html#c.nx_connect" title="nx_connect"><code class="xref c c-func docutils literal notranslate"><span class="pre">nx_connect()</span></code></a></p></li> |
| <li><p><strong>image</strong> – An instance of <code class="docutils literal notranslate"><span class="pre">struct</span> <span class="pre">struct</span> <span class="pre">nx_cursorimage_s</span></code> that describes the |
| cursor image. See <code class="docutils literal notranslate"><span class="pre"><nuttx/nx/nxcursor.h></span></code> for the full description |
| of this structure.</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p>OK on success; ERROR on failure with errno set appropriately.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="c function"> |
| <dt id="c.nxcursor_setposition"> |
| int <code class="sig-name descname">nxcursor_setposition</code><span class="sig-paren">(</span><a class="reference internal" href="nx.html#c.NXHANDLE" title="NXHANDLE">NXHANDLE</a> <em>hnd</em>, FAR <em class="property">const</em> <em class="property">struct</em> <a class="reference internal" href="nxgl.html#c.nxgl_point_s" title="nxgl_point_s">nxgl_point_s</a> *<em>pos</em><span class="sig-paren">)</span><a class="headerlink" href="#c.nxcursor_setposition" title="Permalink to this definition">¶</a><br /></dt> |
| <dd><p>Move the cursor to the specified position.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>hnd</strong> – The server handle returned by <a class="reference internal" href="nx.html#c.nx_connect" title="nx_connect"><code class="xref c c-func docutils literal notranslate"><span class="pre">nx_connect()</span></code></a></p></li> |
| <li><p><strong>pos</strong> – The new cursor position</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns</dt> |
| <dd class="field-even"><p>OK on success; ERROR on failure with errno set appropriately.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
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