embedded why error QWSMouseHandler

**ThÃ nh ViÃªn Má»›i** · 24th May 2011, 11:10

this is my code use, but it cant build error:cannot declare variable to be of abstract type 'QWSMouseHandler

can you help me ?

Qt Code:

Switch view

#if defined(Q_OS_LINUX)
	QPoint qpoint = QWSMouseHandler::pos();
	Qt::MouseButtons buttons = Qt::NoButton;
	if (qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
	{
		if (event->key() == Qt::Key_Left)
		{
			qpoint.setX(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Up)
		{
			qpoint.setY(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Down)
		{
			qpoint.setX(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Right)
		{
			qpoint.setY(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return)
		{
			buttons |= Qt::LeftButton;
		}
		QWSMouseHandler::mouseChanged (qpoint,buttons,0);
		//QWSServer::sendMouseEvent( qpoint, 0 );
	}
#else

#if defined(Q_OS_LINUX)
	QPoint qpoint = QWSMouseHandler::pos();
	Qt::MouseButtons buttons = Qt::NoButton;
	if (qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
	{
		if (event->key() == Qt::Key_Left)
		{
			qpoint.setX(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Up)
		{
			qpoint.setY(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Down)
		{
			qpoint.setX(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Right)
		{
			qpoint.setY(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return)
		{
			buttons |= Qt::LeftButton;
		}
		QWSMouseHandler::mouseChanged (qpoint,buttons,0);
		//QWSServer::sendMouseEvent( qpoint, 0 );
	}
#else

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src/BrowserWindow.cpp:101: error: cannot declare variable 'qwsMouse' to be of abstract type 'QWSMouseHandler'
../../../../install/include/QtGui/qmouse_qws.h:67: note: because the following virtual functions are pure within 'QWSMouseHandler':
../../../../install/include/QtGui/qmouse_qws.h:77: note: virtual void QWSMouseHandler::resume()
../../../../install/include/QtGui/qmouse_qws.h:78: note: virtual void QWSMouseHandler::suspend()
src/BrowserWindow.cpp:127: error: no matching function for call to 'QWSMouseHandler::mouseChanged(QPoint*, Qt::MouseButtons&, int)'
../../../../install/include/QtGui/qmouse_qws.h:81: note: candidates are: void QWSMouseHandler::mouseChanged(const QPoint&, int, int)
make: *** [BrowserWindow.o] Error 1

**Santosh Reddy** · 24th May 2011, 12:49

The error means that the "QWSMouseHandler" is not a complete type, to make it complete you need to implement the pure virtual functions. You need to subclass "QWSMouseHandler" and then implement them, use it.

The last error is regarding the datatype mismatch, that should be simple

**ThÃ nh ViÃªn Má»›i** · 25th May 2011, 08:13

Originally Posted by Santosh Reddy

The error means that the "QWSMouseHandler" is not a complete type, to make it complete you need to implement the pure virtual functions. You need to subclass "QWSMouseHandler" and then implement them, use it.

The last error is regarding the datatype mismatch, that should be simple

yeah, but when i subclass it then error

Qt Code:

Switch view

class QMouse : public QWSMouseHandler
{
public:
	explicit QMouse(const QString &driver = QString(),const QString &device = QString());
	void 	mouseChanged ( const QPoint & position, int state, int wheel = 0 );
	const QPoint & 	pos () ;
};
void BrowserWindow::keyReleaseEvent(QKeyEvent *event)
{
#if defined(Q_OS_LINUX)
	QPoint qpoint = QMouse::pos();
	Qt::MouseButtons buttons = Qt::NoButton;
	if (qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
	{
		if (event->key() == Qt::Key_Left)
		{
			qpoint.setX(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Up)
		{
			qpoint.setY(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Down)
		{
			qpoint.setX(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Right)
		{
			qpoint.setY(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return)
		{
			buttons |= Qt::LeftButton;
		}
		QMouse::mouseChanged (qpoint,buttons,0);

class QMouse : public QWSMouseHandler
{
public:
	explicit QMouse(const QString &driver = QString(),const QString &device = QString());
	void 	mouseChanged ( const QPoint & position, int state, int wheel = 0 );
	const QPoint & 	pos () ;
};
void BrowserWindow::keyReleaseEvent(QKeyEvent *event)
{
#if defined(Q_OS_LINUX)
	QPoint qpoint = QMouse::pos();
	Qt::MouseButtons buttons = Qt::NoButton;
	if (qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
	{
		if (event->key() == Qt::Key_Left)
		{
			qpoint.setX(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Up)
		{
			qpoint.setY(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Down)
		{
			qpoint.setX(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Right)
		{
			qpoint.setY(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return)
		{
			buttons |= Qt::LeftButton;
		}
		QMouse::mouseChanged (qpoint,buttons,0);

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can you help me ?

src/BrowserWindow.cpp: In member function 'virtual void BrowserWindow::keyReleaseEvent(QKeyEvent*)':
src/BrowserWindow.cpp:115: error: cannot call member function 'const QPoint& QMouse:

os()' without object
src/BrowserWindow.cpp:139: error: cannot call member function 'void QMouse::mouseChanged(const QPoint&, int, int)' without object
make: *** [BrowserWindow.o] Error 1

Added after 12 minutes:

Qt Code:

Switch view

class QMouse : public QWSMouseHandler
{
public:
	explicit QMouse(const QString &driver = QString(),const QString &device = QString());
	void 	mouseChanged ( const QPoint & position, int state, int wheel = 0 );
	const QPoint & 	pos () ;
	void 	resume ();
	void 	suspend ();
};
 
#endif
void BrowserWindow::keyReleaseEvent(QKeyEvent *event)
{
#if defined(Q_OS_LINUX)
	QMouse* qmouseSonnh;
	qmouseSonnh = new QMouse;
	QPoint qpoint = qmouseSonnh->pos();
	Qt::MouseButtons buttons = Qt::NoButton;
	if (qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
	{
		if (event->key() == Qt::Key_Left)
		{
			qpoint.setX(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Up)
		{
			qpoint.setY(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Down)
		{
			qpoint.setX(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Right)
		{
			qpoint.setY(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return)
		{
			buttons |= Qt::LeftButton;
		}
		qmouseSonnh->mouseChanged (qpoint,buttons,0);
		//QWSServer::sendMouseEvent( qpoint, 0 );
	}
#else
	int delta = 50;
	QPoint pos = QCursor::pos();
	switch (event->key()) 
	{
	case Qt::Key_Left:
		pos.rx() -= delta;
		break;
	case Qt::Key_Right:
		pos.rx() += delta;
		break;
	case Qt::Key_Up:
		pos.ry() -= delta;
		break;
	case Qt::Key_Down:
		pos.ry() += delta;
		break;
	case Qt::Key_Return:
		break;
	default:
		break;
	}
	QCursor::setPos(pos);
#endif
	QWidget::keyReleaseEvent(event);
	switch (event->key()) 
	{
	case Qt::Key_Home:
		if (m_animation->state() == QAbstractAnimation::Running) 
		{
			const QAbstractAnimation::Direction direction =  m_animation->direction() == QAbstractAnimation::Forward
				? QAbstractAnimation::Forward
				: QAbstractAnimation::Backward;
			m_animation->setDirection(direction);
		} 
		else if (qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
		{
			showHomeView();
		}
		else
		{
			showBrowserView();
		}
	case Qt::Key_F1:
		if (!qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
		{
			m_homeView->SetBookMark();
		}
		break;
	default:
		return;
	}
	event->accept();
}

class QMouse : public QWSMouseHandler
{
public:
	explicit QMouse(const QString &driver = QString(),const QString &device = QString());
	void 	mouseChanged ( const QPoint & position, int state, int wheel = 0 );
	const QPoint & 	pos () ;
	void 	resume ();
	void 	suspend ();
};

#endif
void BrowserWindow::keyReleaseEvent(QKeyEvent *event)
{
#if defined(Q_OS_LINUX)
	QMouse* qmouseSonnh;
	qmouseSonnh = new QMouse;
	QPoint qpoint = qmouseSonnh->pos();
	Qt::MouseButtons buttons = Qt::NoButton;
	if (qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
	{
		if (event->key() == Qt::Key_Left)
		{
			qpoint.setX(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Up)
		{
			qpoint.setY(qpoint.x() + 30);
		}
		if (event->key() == Qt::Key_Down)
		{
			qpoint.setX(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Right)
		{
			qpoint.setY(qpoint.x() - 30);
		}
		if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return)
		{
			buttons |= Qt::LeftButton;
		}
		qmouseSonnh->mouseChanged (qpoint,buttons,0);
		//QWSServer::sendMouseEvent( qpoint, 0 );
	}
#else
	int delta = 50;
	QPoint pos = QCursor::pos();
	switch (event->key()) 
	{
	case Qt::Key_Left:
		pos.rx() -= delta;
		break;
	case Qt::Key_Right:
		pos.rx() += delta;
		break;
	case Qt::Key_Up:
		pos.ry() -= delta;
		break;
	case Qt::Key_Down:
		pos.ry() += delta;
		break;
	case Qt::Key_Return:
		break;
	default:
		break;
	}
	QCursor::setPos(pos);
#endif
	QWidget::keyReleaseEvent(event);
	switch (event->key()) 
	{
	case Qt::Key_Home:
		if (m_animation->state() == QAbstractAnimation::Running) 
		{
			const QAbstractAnimation::Direction direction =  m_animation->direction() == QAbstractAnimation::Forward
				? QAbstractAnimation::Forward
				: QAbstractAnimation::Backward;
			m_animation->setDirection(direction);
		} 
		else if (qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
		{
			showHomeView();
		}
		else
		{
			showBrowserView();
		}
	case Qt::Key_F1:
		if (!qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))
		{
			m_homeView->SetBookMark();
		}
		break;
	default:
		return;
	}
	event->accept();
}

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BrowserWindow.o:/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/web-browser-sonnh89-24-5-2011/src/BrowserWindow.cpp:106: undefined reference to `QMouse:

os()'
BrowserWindow.o:/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/web-browser-sonnh89-24-5-2011/src/BrowserWindow.cpp:106: undefined reference to `QMouse:

os()'
BrowserWindow.o:/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/web-browser-sonnh89-24-5-2011/src/BrowserWindow.cpp:130: undefined reference to `QMouse::mouseChanged(QPoint const&, int, int)'
BrowserWindow.o:/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/web-browser-sonnh89-24-5-2011/src/BrowserWindow.cpp:130: undefined reference to `QMouse::mouseChanged(QPoint const&, int, int)'
BrowserWindow.o: In function `BrowserWindow':
/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/web-browser-sonnh89-24-5-2011/src/BrowserWindow.cpp:35: undefined reference to `QMouse::QMouse(QString const&, QString const&)'
/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/web-browser-sonnh89-24-5-2011/src/BrowserWindow.cpp:35: undefined reference to `QMouse::QMouse(QString const&, QString const&)'
/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/web-browser-sonnh89-24-5-2011/src/BrowserWindow.cpp:35: undefined reference to `QMouse::QMouse(QString const&, QString const&)'
/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/web-browser-sonnh89-24-5-2011/src/BrowserWindow.cpp:35: undefined reference to `QMouse::QMouse(QString const&, QString const&)'

**Santosh Reddy** · 25th May 2011, 08:35

Qt Code:

Switch view

QPoint qpoint = qmouseSonnh->pos();
qmouseSonnh->mouseChanged (qpoint,buttons,0);

QPoint qpoint = qmouseSonnh->pos();
qmouseSonnh->mouseChanged (qpoint,buttons,0);

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with this modification it should compile, if not try clean build

**ThÃ nh ViÃªn Má»›i** · 25th May 2011, 08:46

yeah, i cleaned project, but error:

BrowserWindow.o: In function `QMouse':
/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/123/src/BrowserWindow.h:20: undefined reference to `vtable for QMouse'
/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/123/src/BrowserWindow.h:20: undefined reference to `vtable for QMouse'
/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/123/src/BrowserWindow.h:20: undefined reference to `vtable for QMouse'
/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/123/src/BrowserWindow.h:20: undefined reference to `vtable for QMouse'
/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/123/src/BrowserWindow.h:20: undefined reference to `vtable for QMouse'
BrowserWindow.o:/tango3/qt_SMP8654F_bin_4.5.2-1.1/src/demos/embedded/123/src/BrowserWindow.h:20: more undefined references to `vtable for QMouse' follow
collect2: ld returned 1 exit status

**high_flyer** · 25th May 2011, 10:45

Are you trying to use signals and slots withe QMouse?
And show the implementation of QMouse.

**Santosh Reddy** · 26th May 2011, 06:41

Did you implement the following virtual methods? (just in case, you missed them)

Qt Code:

Switch view

class QMouse : public QWSMouseHandler
{
public:
	explicit QMouse(const QString &driver = QString(),const QString &device = QString());
	void 	mouseChanged ( const QPoint & position, int state, int wheel = 0 );
	const QPoint & 	pos () ;// ?
	void 	resume ();// ?
	void 	suspend ();// ?
};

class QMouse : public QWSMouseHandler
{
public:
	explicit QMouse(const QString &driver = QString(),const QString &device = QString());
	void 	mouseChanged ( const QPoint & position, int state, int wheel = 0 );
	const QPoint & 	pos () ;// ?
	void 	resume ();// ?
	void 	suspend ();// ?
};

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