Qt's Widgets Application uses a styling system called Qt Style Sheets, which is similar to the web technology's styling system—CSS (Cascading Style Sheet). All you need to do is write the style description of the widget and Qt will render it accordingly. The syntax of Qt Style Sheets is pretty much the same as CSS.
Qt Style Sheets has been inspired by CSS and thus they are both very similar to each other:
- Qt Style Sheets:
QLineEdit { color: blue; background-color: black; }
- CSS:
h1 { color: blue; background-color: black; }
In the preceding example, both Qt Style Sheet and CSS contain a declaration block and a selector. Each declaration consists of a property and value, which are separated by a colon.
You can change a widget's style sheet by using two methods—using C++ code directly or by using the properties editor. If you&apos...