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• 详细描述

QCameraFlashControl Class

The QCameraFlashControl class allows controlling a camera's flash. 更多...

头：	#include <QCameraFlashControl>
qmake:	QT += multimedia
继承：	QMediaControl

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公共函数

virtual	~QCameraFlashControl ()
virtual QCameraExposure::FlashModes	flashMode () const = 0
virtual bool	isFlashModeSupported (QCameraExposure::FlashModes mode ) const = 0
virtual bool	isFlashReady () const = 0
virtual void	setFlashMode (QCameraExposure::FlashModes mode ) = 0

• 31 公共函数继承自 QObject

信号

void	flashReady (bool ready )

• 2 信号继承自 QObject

静态公共成员

const QMetaObject

staticMetaObject

• 9 静态公共成员继承自 QObject

保护函数

QCameraFlashControl (QObject * parent = nullptr)

• 9 保护函数继承自 QObject

宏

QCameraFlashControl_iid

额外继承成员

• 1 特性继承自 QObject
• 1 公共槽继承自 QObject

详细描述

The QCameraFlashControl class allows controlling a camera's flash.

You can set the type of flash effect used when an image is captured, and test to see if the flash hardware is ready to fire.

You can retrieve this control from the camera object in the usual way:

Some camera devices may not have flash hardware, or may not be configurable. In that case, there will be no QCameraFlashControl available.

接口名称对于 QCameraFlashControl is org.qt-project.qt.cameraflashcontrol/5.0 作为定义在 QCameraFlashControl_iid .

另请参阅 QCamera .

成员函数文档编制

[protected] QCameraFlashControl:: QCameraFlashControl ( QObject * parent = nullptr)

Constructs a camera flash control object with parent .

[虚拟] QCameraFlashControl:: ~QCameraFlashControl ()

Destroys the camera control object.

[pure virtual] QCameraExposure::FlashModes QCameraFlashControl:: flashMode () const

Returns the current flash mode.

另请参阅 setFlashMode ().

[signal] void QCameraFlashControl:: flashReady ( bool ready )

Signal emitted when flash state changes to ready .

[pure virtual] bool QCameraFlashControl:: isFlashModeSupported ( QCameraExposure::FlashModes mode ) const

Return true if the reqested flash mode is supported. Some QCameraExposure::FlashMode values can be combined, for example QCameraExposure::FlashManual | QCameraExposure::FlashSlowSyncRearCurtain

[pure virtual] bool QCameraFlashControl:: isFlashReady () const

Returns true if flash is charged.

[pure virtual] void QCameraFlashControl:: setFlashMode ( QCameraExposure::FlashModes mode )

Set the current flash mode .

Usually a single QCameraExposure::FlashMode flag is used, but some non conflicting flags combination are also allowed, like QCameraExposure::FlashManual | QCameraExposure::FlashSlowSyncRearCurtain .

另请参阅 flashMode ().

宏文档编制

QCameraFlashControl_iid

org.qt-project.qt.cameraflashcontrol/5.0

定义接口名为 QCameraFlashControl 类。