How can I incorporate hover and pressed states in a custom widget using QSS properties?

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You can incorporate hover and pressed states in a custom widget using QSS properties by setting the corresponding pseudo-states for your widget. Here's an example:

QWidget#MyWidget:hover {
    /* Set properties for hover state */
    background-color: red;
}

QWidget#MyWidget:pressed {
    /* Set properties for pressed state */
    background-color: blue;
}

In this example, MyWidget is the name of your custom widget class. The :hover and :pressed pseudo-states are assigned to the widget using the #MyWidget selector.

You can then set any QSS properties you want for the hover and pressed states, such as background color, font color, border style, etc.

Note that not all widgets support the :hover and :pressed pseudo-states. You can check the Qt documentation to see which widgets support these states.