The QStyleOptionFocusRect class is used to describe the parameters for drawing a focus rectangle with QStyle . 更多...
| 頭： | #include <QStyleOptionFocusRect> |
| qmake: | QT += widgets |
| 繼承： | QStyleOption |
| enum | StyleOptionType { Type } |
| enum | StyleOptionVersion { Version } |
| QStyleOptionFocusRect () | |
| QStyleOptionFocusRect (const QStyleOptionFocusRect & other ) |
| QColor | backgroundColor |
The QStyleOptionFocusRect class is used to describe the parameters for drawing a focus rectangle with QStyle .
For performance reasons, the access to the member variables is direct (i.e., using the
.
or
->
operator). This low-level feel makes the structures straightforward to use and emphasizes that these are simply parameters used by the style functions.
對於可以如何使用樣式選項的演示範例，見 樣式 範例。
另請參閱 QStyleOption .
This enum is used to hold information about the type of the style option, and is defined for each QStyleOption 子類。
| 常量 | 值 | 描述 |
|---|---|---|
QStyleOptionFocusRect::Type
|
SO_FocusRect
|
提供樣式選項的類型 ( SO_FocusRect 對於此類)。 |
類型內部使用通過 QStyleOption ，其子類，和 qstyleoption_cast () to determine the type of style option. In general you do not need to worry about this unless you want to create your own QStyleOption subclass and your own styles.
另請參閱 StyleOptionVersion .
This enum is used to hold information about the version of the style option, and is defined for each QStyleOption 子類。
| 常量 | 值 | 描述 |
|---|---|---|
QStyleOptionFocusRect::Version
|
1
|
1 |
版本的使用通過 QStyleOption 子類以實現擴展在不破壞兼容性的情況下。若使用 qstyleoption_cast ()，通常不需要校驗它。
另請參閱 StyleOptionType .
構造 QStyleOptionFocusRect , initializing the members variables to their default values.
構造副本為 other 樣式選項。
This variable holds the background color on which the focus rectangle is being drawn
The default value is an invalid color with the RGB value (0, 0, 0). An invalid color is a color that is not properly set up for the underlying window system.
