label

[mickey]

hi, anyone know why the text on label doesn't appear?? thanks

myLabel::myLabel (QString s, QWidget* parent, const char* name) : QLabel (parent,name) {
	//setText(s);
         this->setBackgroundColor(QColor(10,100,0));
}
lab1 = new myLabel ("Mod1", this->Mo,"");
lab2 = new myLabel ("Mod2", this->Mo,"");

myLabel::myLabel (QString s, QWidget* parent, const char* name) : QLabel (parent,name) {
	//setText(s);
         this->setBackgroundColor(QColor(10,100,0));
}
lab1 = new myLabel ("Mod1", this->Mo,"");
lab2 = new myLabel ("Mod2", this->Mo,"");

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[munna]

What is this->Mo ?

Is Mo shown ?

try calling show() at the end of the constructor.

[mickey]

mo is a Widget; the label is shown; the background color appear....i tried show() but don't change...

[munna]

oh sorry, I thought the label was not appearing. My mistake.

You are not setting any text and therefore no text appears.

uncomment setText(s)

[mickey]

don't work.....I just tried

[sumsin]

you should put ur labels in ctor or any other function called at startup.

[mickey]

Hi see that setText(s) in the constructor works! the problem was the presence the paintEvent(); I could put p.drawText inside paintEvent but this eat the setText of constructor; How can I avoid this? (I want set text on label to be s).thanks

myLabel::myLabel (QString s, QWidget* parent, const char* name) : QLabel (parent,name) {
         this->setBackgroundColor(QColor(10,100,0));
        setText(s);
}
myMainForm::myMainform() {
   lab1 = new myLabel ("Mod1", this->Mo,"");
   lab2 = new myLabel ("Mod2", this->Mo,""); 
}
 
void myLabel::paintEvent( QPaintEvent *){
	QPainter p;
	p.begin( this );
	p.rotate(20.0);	
	p.drawRect(35,5,70,70);
	//p.drawText(50,50, "????" Qt::AlignCenter );
	p.end();
}

myLabel::myLabel (QString s, QWidget* parent, const char* name) : QLabel (parent,name) {
         this->setBackgroundColor(QColor(10,100,0));
        setText(s);
}
myMainForm::myMainform() {
   lab1 = new myLabel ("Mod1", this->Mo,"");
   lab2 = new myLabel ("Mod2", this->Mo,""); 
}

void myLabel::paintEvent( QPaintEvent *){
	QPainter p;
	p.begin( this );
	p.rotate(20.0);	
	p.drawRect(35,5,70,70);
	//p.drawText(50,50, "????" Qt::AlignCenter );
	p.end();
}

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[jacek]

I could put p.drawText inside paintEvent but this eat the setText of constructor; How can I avoid this? (I want set text on label to be s).

You must invoke the base class's implementation of the paintEvent() somewhere:

void myLabel::paintEvent( QPaintEvent *event ) {
	QPainter p( this );
	p.rotate(20.0);	
	p.drawRect(35,5,70,70);
	p.end();
	QLabel::paintEvent( event );
}

void myLabel::paintEvent( QPaintEvent *event ) {
	QPainter p( this );
	p.rotate(20.0);	
	p.drawRect(35,5,70,70);
	p.end();
	QLabel::paintEvent( event );
}

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[mickey]

thank for this;
but I need also rotate it;
so how to do this?

QString* textLabel = &s;
p.drawText(50,50, textLabel, Qt::AlignCenter ); 
 
mylabel.cpp(106): error C2664: 'void QPainter::drawText(int,int,const QString &,int,QPainter::TextDirection)' : cannot convert parameter 3 from 'QString *' to 'const QString &'

QString* textLabel = &s;
p.drawText(50,50, textLabel, Qt::AlignCenter ); 

mylabel.cpp(106): error C2664: 'void QPainter::drawText(int,int,const QString &,int,QPainter::TextDirection)' : cannot convert parameter 3 from 'QString *' to 'const QString &'

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[mickey]

Could anyone help me (last message)? thanks

[jacek]

cannot convert parameter 3 from 'QString *' to 'const QString &'

Which parameter of the QPainter::drawText() does this error message refer to?
What type does it expect?
What is the type of variable you have used?