irrlicht/examples/24.CursorControl/tutorial.html

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<div class="title">Tutorial 24: CursorControl </div> </div>
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<p>Show how to modify cursors and offer some useful tool-functions for creating cursors. It can also be used for experiments with the mouse in general. </p><div class="fragment"><div class="line"><span class="preprocessor">#include &lt;irrlicht.h&gt;</span></div><div class="line"><span class="preprocessor">#include &quot;driverChoice.h&quot;</span></div><div class="line"></div><div class="line"><span class="keyword">using namespace </span>irr;</div><div class="line"><span class="keyword">using namespace </span>core;</div><div class="line"><span class="keyword">using namespace </span>scene;</div><div class="line"><span class="keyword">using namespace </span>video;</div><div class="line"><span class="keyword">using namespace </span>io;</div><div class="line"><span class="keyword">using namespace </span>gui;</div><div class="line"></div><div class="line"><span class="preprocessor">#ifdef _IRR_WINDOWS_</span></div><div class="line"><span class="preprocessor">#pragma comment(lib, &quot;Irrlicht.lib&quot;)</span></div><div class="line"><span class="preprocessor">#endif</span></div><div class="line"></div><div class="line"><span class="keyword">const</span> <span class="keywordtype">int</span> DELAY_TIME = 3000;</div><div class="line"></div><div class="line"><span class="keyword">enum</span> ETimerAction</div><div class="line">{</div><div class="line"> ETA_MOUSE_VISIBLE,</div><div class="line"> ETA_MOUSE_INVISIBLE,</div><div class="line">};</div></div><!-- fragment --><p> Structure to allow delayed execution of some actions. </p><div class="fragment"><div class="line"><span class="keyword">struct </span>TimerAction</div><div class="line">{</div><div class="line"> u32 TargetTime;</div><div class="line"> ETimerAction Action;</div><div class="line">};</div></div><!-- fragment --> <div class="fragment"><div class="line"><span class="keyword">struct </span>SAppContext</div><div class="line">{</div><div class="line"> SAppContext()</div><div class="line"> : Device(0), InfoStatic(0), EventBox(0), CursorBox(0), SpriteBox(0)</div><div class="line"> , ButtonSetVisible(0), ButtonSetInvisible(0), ButtonSimulateBadFps(0)</div><div class="line"> , ButtonChangeIcon(0)</div><div class="line"> , SimulateBadFps(false)</div><div class="line"> {</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keywordtype">void</span> update()</div><div class="line"> {</div><div class="line"> <span class="keywordflow">if</span> (!Device)</div><div class="line"> <span class="keywordflow">return</span>;</div><div class="line"> u32 timeNow = Device-&gt;getTimer()-&gt;getTime();</div><div class="line"> <span class="keywordflow">for</span> ( u32 i=0; i &lt; TimerActions.size(); ++i )</div><div class="line"> {</div><div class="line"> <span class="keywordflow">if</span> ( timeNow &gt;= TimerActions[i].TargetTime )</div><div class="line"> {</div><div class="line"> runTimerAction(TimerActions[i]);</div><div class="line"> TimerActions.erase(i);</div><div class="line"> }</div><div class="line"> <span class="keywordflow">else</span></div><div class="line"> {</div><div class="line"> ++i;</div><div class="line"> }</div><div class="line"> }</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="keywordtype">void</span> runTimerAction(<span class="keyword">const</span> TimerAction&amp; action)</div><div class="line"> {</div><div class="line"> <span class="keywordflow">if</span> (ETA_MOUSE_VISIBLE == action.Action)</div><div class="line"> {</div><div class="line"> Device-&gt;getCursorControl()-&gt;setVisible(<span class="keyword">true</span>);</div><div class="line"> ButtonSetVisible-&gt;setEnabled(<span class="keyword">true</span>);</div><div class="line"> }</div><div class="line"> <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ETA
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