setAlignment does not work again

I am trying to align the text inside a QTextEdit.
At bound the action menu to the setAlignment() slot of QTextEdit.
But at runtime, besides the fact that no alignment takes place, I got the errors:

Object::connect: No such slot QTextEdit::setAlignment(Qt::AlignRight)

and so on.
The signla/slot binding is:


connect(act_alignright, SIGNAL(triggered(bool)), textEdit,SLOT(setAlignment(Qt::AlignRight)));

Any reply will be very appreciated

first of all it won't work because

Quote:

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The signals and slots mechanism is type safe: The signature of a signal must match the signature of the receiving slot.

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so it's the reason why you get error

http://doc.trolltech.com/4.4/signalsandslots.html

Don't understan:
the slot setAlignement is a slot of textEdit and act_alignright is a signal of a menu.
What am I missing?
G

I solved. It seems the it's enough to call a callback from the connect function:

connect(act_alignright, SIGNAL(triggered(bool)), this, SLOT(right()));
connect(act_alignleft, SIGNAL(triggered(bool)), this, SLOT(left()));
connect(act_aligncenter, SIGNAL(triggered(bool)), this, SLOT(center()));


And then use setAlignment inside the callback.

Quote:

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Originally Posted by giusepped

Don't understan:
the slot setAlignement is a slot of textEdit and act_alignright is a signal of a menu.
What am I missing?
G

---

Quote:

---

Originally Posted by giusepped

Code:

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connect(act_alignright, SIGNAL(triggered(bool)), // <---this is bool
textEdit,SLOT(setAlignment(Qt::AlignRight))); // <--this is not a bool, it is also a value and not a variable

---

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You really need to read/understand: http://doc.trolltech.com/4.4/signalsandslots.html
hope it helps

I have problem with QTextEdit setAlignment()

Code:

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#ifndef TEDIT_H
#define TEDIT_H
 
#include <QWidget>
 
class QToolBar;
class QAction;
class QTextEdit;
 
class TEdit : public QWidget
{
	Q_OBJECT
	public:
		TEdit();
		virtual ~TEdit();
 
	private slots:
		void makeBold();
		void makeItalic();
		void makeUnderline();
		void setAlignLeft();
		void setAlignCenter();
		void setAlignRight();
	private:
 
		QToolBar *toolBar;
 
		QAction *textBold;
		QAction *textItalic;
		QAction *textUnderline;
		QAction *textLeft;
		QAction *textCenter;
		QAction *textRight;
 
		QTextEdit *te;
};
 
#endif /* TEDIT_H_ */

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implement

Code:

---

#include <QtGui>
 
#include "tedit.h"
 
TEdit::TEdit()
{
	resize(800,600);
	te = new QTextEdit;
	toolBar = new QToolBar(this);
 
	textBold = new QAction(QIcon(":images/format_text_bold.png"),tr("B"),this);
	connect(textBold, SIGNAL(triggered()), this, SLOT(makeBold()));
	textItalic = new QAction(QIcon(":images/format_text_italic.png"),tr("I"),this);
	connect(textItalic, SIGNAL(triggered()), this, SLOT(makeItalic()));
	textUnderline = new QAction(QIcon(":images/format_text_underline.png"),tr("U"),this);
	connect(textUnderline, SIGNAL(triggered()), this, SLOT(makeUnderline()));
 
	textLeft = new QAction(QIcon(":images/format_justify_left.png"),tr("Align Left"),this);
	connect(textLeft, SIGNAL(triggered()), this, SLOT(setAlignLeft()));
	textCenter = new QAction(QIcon(":images/format_justify_center.png"),tr("Align Center"),this);
	connect(textLeft, SIGNAL(triggered()), this, SLOT(setAlignCenter()));
	textRight = new QAction(QIcon(":images/format_justify_right.png"),tr("Align Right"),this);
	connect(textLeft, SIGNAL(triggered()), this, SLOT(setAlignRight()));
 
	toolBar->addAction(textBold);
	toolBar->addAction(textItalic);
	toolBar->addAction(textUnderline);
	toolBar->addSeparator();
	toolBar->addAction(textLeft);
	toolBar->addAction(textCenter);
	toolBar->addAction(textRight);
 
	QVBoxLayout *ml = new QVBoxLayout;
	ml->setMargin(1);
	ml->setSpacing(0);
	ml->addWidget(toolBar);
	ml->addWidget(te);
 
	setLayout(ml);
}
 
void TEdit::makeBold()
{
	QTextCursor cursor = te->textCursor();
	QTextCharFormat boldFormat;
	if(cursor.charFormat().fontWeight()==QFont::Normal)
	{
		boldFormat.setFontWeight(QFont::Bold);
	}
	else
	{
		boldFormat.setFontWeight(QFont::Normal);
	}
 
	cursor.mergeCharFormat(boldFormat);
 
}
 
void TEdit::makeItalic()
{
	QTextCursor cursor = te->textCursor();
	QTextCharFormat italicFormat;
	if(cursor.charFormat().fontItalic()==false)
	{
		italicFormat.setFontItalic(true);
	}
	else
	{
		italicFormat.setFontItalic(false);
	}
	cursor.mergeCharFormat(italicFormat);
}
 
void TEdit::makeUnderline()
{
	QTextCursor cursor = te->textCursor();
	QTextCharFormat underlineFormat;
	if(cursor.charFormat().fontUnderline()==false)
	{
		underlineFormat.setFontUnderline(true);
	}
	else
	{
		underlineFormat.setFontUnderline(false);
	}
	cursor.mergeCharFormat(underlineFormat);
}
 
void TEdit::setAlignLeft()
{
	QTextCursor cursor = te->textCursor();
	QTextBlockFormat blockFmt;
	if(!cursor.hasSelection())
	{
		cursor.select(QTextCursor::BlockUnderCursor);
	}
	blockFmt.setAlignment(Qt::AlignLeft);
	cursor.mergeBlockFormat(blockFmt);
}
void TEdit::setAlignRight()
{
	QTextCursor cursor = te->textCursor();
	QTextBlockFormat blockFmt;
	if(!cursor.hasSelection())
	{
		cursor.select(QTextCursor::BlockUnderCursor);
	}
	blockFmt.setAlignment(Qt::AlignRight);
	cursor.mergeBlockFormat(blockFmt);
}
void TEdit::setAlignCenter()
{
	QTextCursor cursor = te->textCursor();
	QTextBlockFormat blockFmt;
	if(!cursor.hasSelection())
	{
		cursor.select(QTextCursor::BlockUnderCursor);
	}
	blockFmt.setAlignment(Qt::AlignCenter);
	cursor.mergeBlockFormat(blockFmt);
}
TEdit::~TEdit()
{
	// TODO Auto-generated destructor stub
}

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compilation done, no errors or warnings

but if i clicked on toolbar button to align left
text align to right, and alignCenter, alignRight, alignLeft do nothing
O_o

also i try

Code:

---

void TEdit::setAlignLeft()
{
	te->setAlignment(Qt::AlignLeft);
}

---

but not work

sorry problem fixed )))
3 times textLeft )))