Catch a Key, like designer

**spirit** · 7th May 2009, 08:13

take a look implementation of QtKeySequenceEdit in QTDIR\tools\shared\qtpropertybrowser\qttreepropert ybrowser.cpp.

**aekilic** · 7th May 2009, 08:36

I accidentaly use this code

Qt Code:

Switch view

if (o == lineDeNo && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	        lineDeNo->setText(ks.toString(QKeySequence::NativeText));
	    }
	    if (o == lineMa && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	        lineMa->setText(ks.toString());
	        lineDeNo->setText(ks.toString(QKeySequence::PortableText));
	    }

if (o == lineDeNo && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	        lineDeNo->setText(ks.toString(QKeySequence::NativeText));
	    }
	    if (o == lineMa && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	        lineMa->setText(ks.toString());
	        lineDeNo->setText(ks.toString(QKeySequence::PortableText));
	    }

To copy to clipboard, switch view to plain text mode

When editting lineDoNo it doesnt work but When I edit lineMa, lineDeNo works fine,

I try

Qt Code:

Switch view

if (o == lineDeNo && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	        lineDeNo->setText(ks.toString(QKeySequence::PortableText));
	    }

if (o == lineDeNo && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	        lineDeNo->setText(ks.toString(QKeySequence::PortableText));
	    }

To copy to clipboard, switch view to plain text mode

but it doesnt work...

**spirit** · 7th May 2009, 08:40

do you install event filters for both lineedits?

**aekilic** · 7th May 2009, 08:47

yes, I do install for both lines

**spirit** · 7th May 2009, 08:49

ok, can you attach compilable example which contains this bug?

**aekilic** · 7th May 2009, 08:57

do you mean the code for this area?

**spirit** · 7th May 2009, 08:58

minimal compilable example which reproduce your problem.

**aekilic** · 7th May 2009, 09:09

Qt Code:

Switch view

lineDeNo->installEventFilter(this);
	lineMa->installEventFilter(this);

lineDeNo->installEventFilter(this);
	lineMa->installEventFilter(this);

To copy to clipboard, switch view to plain text mode

Qt Code:

Switch view

bool formAyarlar::eventFilter(QObject *o, QEvent *e)
	{
	    if (o == lineDeNo && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	        lineDeNo->setText(ks.toString(QKeySequence::NativeText));
	    }else if (o == lineMa && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	//        lineMa->setText(ks.toString());
	        lineMa->setText(ks.toString(QKeySequence::PortableText));
	    }
        }

bool formAyarlar::eventFilter(QObject *o, QEvent *e)
	{
	    if (o == lineDeNo && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	        lineDeNo->setText(ks.toString(QKeySequence::NativeText));
	    }else if (o == lineMa && e->type() == QEvent::KeyPress) {
	        const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
	        const QKeySequence ks(ke->modifiers() + ke->key());
	//        lineMa->setText(ks.toString());
	        lineMa->setText(ks.toString(QKeySequence::PortableText));
	    }
        }

To copy to clipboard, switch view to plain text mode

**wysota** · 7th May 2009, 09:20

This is not compilable

A compilable example is something that includes a main() and the piece of code you want tested so that if one writes qmake && make it will compile.

And please don't start multiple threads on the same subject. Moving to newbie (again).

**spirit** · 7th May 2009, 09:29

this how should look like "minimal compilable example"

Qt Code:

Switch view

#include <QtGui>
 
class TestWidget: public QWidget
{
	Q_OBJECT
 
public:
	TestWidget(QWidget *parent = 0)
		: QWidget(parent)
	{
		QVBoxLayout *vbl = new QVBoxLayout(this);
		m_lineEditNativeText = new QLineEdit();
		m_lineEditPortableText = new QLineEdit();
 
		m_lineEditNativeText->installEventFilter(this);
		m_lineEditPortableText->installEventFilter(this);
 
		vbl->addWidget(m_lineEditNativeText);
		vbl->addWidget(m_lineEditPortableText);
	}
 
protected:
	bool eventFilter(QObject *o, QEvent *e)
	{
		if (e->type() == QEvent::KeyPress) {
			const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
			const QKeySequence ks(ke->modifiers() + ke->key());
			if (o == m_lineEditNativeText)
				m_lineEditNativeText->setText(ks.toString(QKeySequence::NativeText));
			else if (o == m_lineEditPortableText)
				m_lineEditPortableText->setText(ks.toString());
		}
		return QWidget::eventFilter(o, e);
	}
 
private:
	QLineEdit *m_lineEditNativeText;
	QLineEdit *m_lineEditPortableText;
};
 
int main(int argc, char **argv)
{
	QApplication app(argc, argv);
 
	TestWidget tw;
	tw.show();
 
	return app.exec();
}
 
#include "main.moc"

#include <QtGui>

class TestWidget: public QWidget
{
	Q_OBJECT

public:
	TestWidget(QWidget *parent = 0)
		: QWidget(parent)
	{
		QVBoxLayout *vbl = new QVBoxLayout(this);
		m_lineEditNativeText = new QLineEdit();
		m_lineEditPortableText = new QLineEdit();

		m_lineEditNativeText->installEventFilter(this);
		m_lineEditPortableText->installEventFilter(this);

		vbl->addWidget(m_lineEditNativeText);
		vbl->addWidget(m_lineEditPortableText);
	}

protected:
	bool eventFilter(QObject *o, QEvent *e)
	{
		if (e->type() == QEvent::KeyPress) {
			const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
			const QKeySequence ks(ke->modifiers() + ke->key());
			if (o == m_lineEditNativeText)
				m_lineEditNativeText->setText(ks.toString(QKeySequence::NativeText));
			else if (o == m_lineEditPortableText)
				m_lineEditPortableText->setText(ks.toString());
		}
		return QWidget::eventFilter(o, e);
	}

private:
	QLineEdit *m_lineEditNativeText;
	QLineEdit *m_lineEditPortableText;
};

int main(int argc, char **argv)
{
	QApplication app(argc, argv);

	TestWidget tw;
	tw.show();

	return app.exec();
}

#include "main.moc"

To copy to clipboard, switch view to plain text mode

works fine, but symbol duplicated.

**spirit** · 7th May 2009, 09:38

intresting thing, if modify my code in this way

Qt Code:

Switch view

if (o == m_lineEditNativeText) {
			m_lineEditNativeText->setText(ks.toString(QKeySequence::NativeText));
			m_lineEditPortableText->setText(ks.toString());
		}// else if (o == m_lineEditPortableText)
	//		m_lineEditPortableText->setText(ks.toString());

if (o == m_lineEditNativeText) {
			m_lineEditNativeText->setText(ks.toString(QKeySequence::NativeText));
			m_lineEditPortableText->setText(ks.toString());
		}// else if (o == m_lineEditPortableText)
	//		m_lineEditPortableText->setText(ks.toString());

To copy to clipboard, switch view to plain text mode

then a string in m_lineEditPortableText contains text without duplicating letter.

**spirit** · 7th May 2009, 09:47

crap, it's my mistake, eventFilter should look like

Qt Code:

Switch view

bool eventFilter(QObject *o, QEvent *e)
{
	if (e->type() == QEvent::KeyPress) {
		const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
		const QKeySequence ks(ke->modifiers() + ke->key());
		if (o == m_lineEditNativeText) {
			m_lineEditNativeText->setText(ks.toString(QKeySequence::NativeText));
			return true;
		} else if (o == m_lineEditPortableText) {
			m_lineEditPortableText->setText(ks.toString());
			return true;
		}
	}
	return QWidget::eventFilter(o, e);
}

bool eventFilter(QObject *o, QEvent *e)
{
	if (e->type() == QEvent::KeyPress) {
		const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
		const QKeySequence ks(ke->modifiers() + ke->key());
		if (o == m_lineEditNativeText) {
			m_lineEditNativeText->setText(ks.toString(QKeySequence::NativeText));
			return true;
		} else if (o == m_lineEditPortableText) {
			m_lineEditPortableText->setText(ks.toString());
			return true;
		}
	}
	return QWidget::eventFilter(o, e);
}

To copy to clipboard, switch view to plain text mode

**aekilic** · 7th May 2009, 09:52

Let me try

**aekilic** · 7th May 2009, 10:01

yes works perfect thank you very much spirit you are my life saver!

Thread: Catch a Key, like designer

Thread Tools

Search Thread

Display

Hybrid View

Re: Catch a Key, like designer

Re: Catch a Key, like designer

Re: Catch a Key, like designer

Re: Catch a Key, like designer

Re: Catch a Key, like designer

Re: Catch a Key, like designer

Re: Catch a Key, like designer

Re: Catch a Key, like designer

Re: Catch a Key, like designer

Re: Catch a Key, like designer

The following user says thank you to spirit for this useful post:

Re: Catch a Key, like designer

The following user says thank you to spirit for this useful post:

Re: Catch a Key, like designer

The following user says thank you to spirit for this useful post:

Re: Catch a Key, like designer

Re: Catch a Key, like designer

Similar Threads

designer not showing menu items ...

Threads in Designer plugins

EXtend functionality of QListWidget by making a plugin and use it in designer?

Designer crashes when selecting some widgets

Adding slots in Designer

Bookmarks

Bookmarks

Posting Permissions