首页QChart setPointLabelsVisible

QChart setPointLabelsVisible

时间: 2023-12-30 11:03:10 浏览: 105

QChart setPointLabelsVisible is a method in the Qt framework that sets the visibility of the data point labels in a chart. Data point labels are the labels that are displayed next to each data point in a chart, providing additional information about the plotted data. The syntax for using this method is as follows: ``` void QChart::setPointLabelsVisible(bool visible) ``` The parameter `visible` is a boolean value that indicates whether to show or hide the data point labels. If `visible` is set to `true`, the labels will be displayed. If `visible` is set to `false`, the labels will be hidden. Here's an example of how to use the `setPointLabelsVisible` method: ```cpp QChart *chart = new QChart(); // ... populate chart with data ... chart->setPointLabelsVisible(true); // show the data point labels ``` This will display the data point labels for all data points in the chart. If you want to only show the labels for certain data points, you can use the `QLineSeries::setPointLabelsVisible` method instead: ```cpp QLineSeries *series = new QLineSeries(); // ... populate series with data ... series->setPointLabelsVisible(true); // show the data point labels for this series ``` This will only display the data point labels for the data points in the specified `QLineSeries` object.

阅读全文