The QCameraFlashControl class allows controlling a camera's flash. 更多...
| 头： | #include <QCameraFlashControl> |
| qmake: | QT += multimedia |
| 继承： | QMediaControl |
该类已过时。 提供它是为使旧源代码能继续工作。强烈建议不要在新代码中使用它。
| 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 |
| void | flashReady (bool ready ) |
| QCameraFlashControl (QObject * parent = nullptr) |
| QCameraFlashControl_iid |
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.
The interface name of QCameraFlashControl is
org.qt-project.qt.cameraflashcontrol/5.0
作为定义在
QCameraFlashControl_iid
.
另请参阅 QCamera .
[protected]
QCameraFlashControl::
QCameraFlashControl
(
QObject
*
parent
= nullptr)
Constructs a camera flash control object with parent .
[signal]
void
QCameraFlashControl::
flashReady
(
bool
ready
)
Signal emitted when flash state changes to ready .
[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 ().
[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 ().
org.qt-project.qt.cameraflashcontrol/5.0
定义接口名为 QCameraFlashControl 类。