kanzi::qnx::QnxContext Class Reference

Class representing a Qnx context. More...

#include <kanzi/core.ui/platform/windowing_ng/qnx_screen/qnx_screen_context.hpp>

Public Member Functions
bool	flush () noexcept
	Flushes any pending requests. More...
KZ_NO_DISCARD QnxScreenContextHandleType	getNativeHandle () const noexcept
	Gets Qnx context handle. More...
	QnxContext (int contextFlags)
	Constructor. More...
	QnxContext (const QnxScreenContextHandleType contextHandle)
	Constructor. More...
KZ_NO_DISCARD optional< size_t >	tryGetDisplayCount () const noexcept
	Tries to get the number of displays associated with the context. More...
KZ_NO_DISCARD optional< QnxEvent >	tryGetNextEvent (int timeOut) const noexcept
	Gets a next event from the context. More...
KZ_NO_DISCARD optional< vector< QnxScreenDisplayHandleType > >	tryGetQnxDisplayHandles () const noexcept
	Tries to get the native display handles associated with the context. More...
	~QnxContext ()
	Destructor. More...

Detailed Description

Class representing a Qnx context.

Constructor & Destructor Documentation

kanzi::qnx::QnxContext::QnxContext ( int  contextFlags )

explicit

Constructor.

Parameters

contextFlags

Qnx screen context bit flags.

kanzi::qnx::QnxContext::QnxContext ( const QnxScreenContextHandleType  contextHandle )

explicit

Constructor.

Parameters

contextHandle

Qnx context handle.

Precondition

contextHandle must be a valid context handle.

kanzi::qnx::QnxContext::~QnxContext

(

)

Destructor.

Member Function Documentation

KZ_NO_DISCARD optional<QnxEvent> kanzi::qnx::QnxContext::tryGetNextEvent ( int  timeOut ) const

noexcept

Gets a next event from the context.

Parameters

timeOut

Maximum time (in nanoseconds) to wait for an event to occur. -1 indicates that the call will block until an event is ready.

Return values

nullopt

Trying to get an event has failed.

Returns

Qnx event.

KZ_NO_DISCARD optional<size_t> kanzi::qnx::QnxContext::tryGetDisplayCount ( ) const

noexcept

Tries to get the number of displays associated with the context.

Return values

nullopt

Trying to get the number of displays has failed.

Returns

Display count.

KZ_NO_DISCARD optional<vector<QnxScreenDisplayHandleType> > kanzi::qnx::QnxContext::tryGetQnxDisplayHandles ( ) const

noexcept

Tries to get the native display handles associated with the context.

Return values

nullopt

Trying to get the displays has failed.

Returns

Displays.

bool kanzi::qnx::QnxContext::flush ( )

noexcept

Flushes any pending requests.

Returns

True on success, false on failure.

KZ_NO_DISCARD QnxScreenContextHandleType kanzi::qnx::QnxContext::getNativeHandle ( ) const

noexcept

Gets Qnx context handle.

Returns

Qnx context handle.

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The documentation for this class was generated from the following file:

• kanzi/core.ui/platform/windowing_ng/qnx_screen/qnx_screen_context.hpp