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# QStyleOptionComplex Class Reference
[com.trolltech.qt.gui module]

The `QStyleOptionComplex` class is used to hold parameters that are common to all complex controls. More...

Inherits `QStyleOption`.

Inherited by `QStyleOptionComboBox`, `QStyleOptionGroupBox`, `QStyleOptionSizeGrip`, `QStyleOptionSlider`, `QStyleOptionSpinBox`, `QStyleOptionTitleBar`, and `QStyleOptionToolButton`.

## Detailed Description

The `QStyleOptionComplex` class is used to hold parameters that are common to all complex controls.

This class is not used on its own. Instead it is used to derive other complex control options, for example `QStyleOptionSlider` and `QStyleOptionSpinBox`.

For performance reasons, the access to the member variables is direct (i.e., using the `.` or `->` operator).

For an example demonstrating how style options can be used, see the Styles example.

See also `QStyleOption`.