1. Overview QwtScaleDraw is a class in the Qt drawing library Qwt, used to draw axis ticks and tick labels. It provides methods and properties to set the style, layout, and alignment of tick marks and labels. The following is the class inheritance relationship: 2. Commonly used methods Tag related methods: setLabelRotation(double angle): Set the […]
Tag: qwt
Qwt QwtPlotMultiBarChart draws a multi-column bar chart
1. Overview QwtPlotMultiBarChart is a class in the Qwt drawing library used to draw multi-column bar charts. It can display multiple bars and group them into different categories. Bars under each category can have different colors and widths. The following is a class inheritance diagram: 2. Commonly used methods Setup data: void setSamples (const QVector< […]
How Qt uses QWT to draw histograms
Sometimes we will encounter such a function that it is necessary to display columns of different colors in the histogram, and each main state represents a different state, so it is difficult to achieve with a simple QChart. QT provides a library called QWT. QWT, the full name is Qt Widgets for Technical Applications, is […]