QPalette is a class in the Qt library used for managing color and texture information for Qt widgets. The QPalette class can be used to define the appearance of a widget and its sub-widgets, as well as to adjust the colors and textures of widgets in response to user actions.
Example 1: Changing the color of an application window
QPalette palette; palette.setColor(QPalette::Window, Qt::red); // Change the window color to red window.setPalette(palette);
window.show(); return app.exec(); }
In this code example, we create a simple application window with a red background by creating a QPalette object and setting the Window color to red using the setColor method. We then set the palette of the QWidget to our newly created palette object using the setPalette method.
In this example, we create a gradient effect for the background of our application window using the setColorAt method and creating a QLinearGradient object. We then create a QBrush object using the QLinearGradient object and set it as the background using the setBrush method.
The package/library used for this code is the Qt library, which is a cross-platform application and UI development framework written in C++.
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