Qt 注册表

一、写入注册表

示例：

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; background: transparent; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal;">void MainWindow::writeSettings(){    QSettings settings(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"Software Inc."</span>, <span class="hljs-string" style="color:#0880;box-sizing: border-box;">"Spreadsheet"</span>)<span class="hljs-comment" style="color:#8800;box-sizing: border-box;">;</span>    settings<span class="hljs-preprocessor" style="color:#444444;box-sizing: border-box;">.setValue</span>(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"geometry"</span>, saveGeometry())<span class="hljs-comment" style="color:#8800;box-sizing: border-box;">;</span>    settings<span class="hljs-preprocessor" style="color:#444444;box-sizing: border-box;">.setValue</span>(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"recentFiles"</span>, recentFiles)<span class="hljs-comment" style="color:#8800;box-sizing: border-box;">;</span>    settings<span class="hljs-preprocessor" style="color:#444444;box-sizing: border-box;">.setValue</span>(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"showGrid"</span>, showGridAction->isChecked())<span class="hljs-comment" style="color:#8800;box-sizing: border-box;">;</span>    settings<span class="hljs-preprocessor" style="color:#444444;box-sizing: border-box;">.setValue</span>(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"autoRecalc"</span>, autoRecalcAction->isChecked())<span class="hljs-comment" style="color:#8800;box-sizing: border-box;">;</span>}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; background-color: rgb(238, 238, 238); top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right;"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li></ul>

二、读入注册表

示例：

<code class="hljs cs has-numbering" style="display: block; padding: 0px; background: transparent; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal;"><span class="hljs-keyword" style="color:#0088;box-sizing: border-box;">void</span> MainWindow::readSettings(){    QSettings settings(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"Software Inc."</span>, <span class="hljs-string" style="color:#0880;box-sizing: border-box;">"Spreadsheet"</span>);    restoreGeometry(settings.<span class="hljs-keyword" style="color:#0088;box-sizing: border-box;">value</span>(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"geometry"</span>).toByteArray());    recentFiles = settings.<span class="hljs-keyword" style="color:#0088;box-sizing: border-box;">value</span>(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"recentFiles"</span>).toStringList();    <span class="hljs-keyword" style="color:#0088;box-sizing: border-box;">bool</span> showGrid = settings.<span class="hljs-keyword" style="color:#0088;box-sizing: border-box;">value</span>(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"showGrid"</span>, <span class="hljs-keyword" style="color:#0088;box-sizing: border-box;">true</span>).toBool();    <span class="hljs-keyword" style="color:#0088;box-sizing: border-box;">bool</span> autoRecalc = settings.<span class="hljs-keyword" style="color:#0088;box-sizing: border-box;">value</span>(<span class="hljs-string" style="color:#0880;box-sizing: border-box;">"autoRecalc"</span>, <span class="hljs-keyword" style="color:#0088;box-sizing: border-box;">true</span>).toBool();}</code>