Column Colour

[sumsin]

Hi,

How can I show a readonly column in Gray colour in a QTable.

[wysota]

You have to subclass QTableItem and reimplement its paint() routine. And of course use this subclass instead of QTableItem if you need such behaviour.

[sumsin]

Thanks

void MyTableItem::paint (QPainter *p, const QColorGroup &cg, const QRect &cr, bool selected)
{
        QColorGroup g(cg);	
        g.setColor( QColorGroup::Background, Qt::red );
        QTableItem::paint (p, cg, cr, selected);
}

void MyTableItem::paint (QPainter *p, const QColorGroup &cg, const QRect &cr, bool selected)
{
        QColorGroup g(cg);	
        g.setColor( QColorGroup::Background, Qt::red );
        QTableItem::paint (p, cg, cr, selected);
}

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but its not working

[wysota]

How did you use this code?

[sumsin]

should I use something else???

[wysota]

Use "Base" instead of "Background".

BTW. There is an error in your code. You are calling paint() with cg instead of g.

[sumsin]

first i use Base but its also not working, then I use Background which is also not working.

Is there any other way to do so???

[wysota]

Did you correct that paint() call?

You have:

QTableItem::paint (p, cg, cr, selected);

QTableItem::paint (p, cg, cr, selected);

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and it should be:

QTableItem::paint (p, g, cr, selected);

QTableItem::paint (p, g, cr, selected);

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This works for me:

#include <qapplication.h>
#include <qtable.h>
 
class MyTableItem : public QTableItem {
public:
  MyTableItem(QTable *table) : QTableItem(table, QTableItem::OnTyping){}
  void paint(QPainter *p, const QColorGroup &cg, const QRect &cr, bool selected){
   QColorGroup g(cg);
   g.setColor(QColorGroup::Base, Qt::red);
   QTableItem::paint(p, g, cr, selected);
  }
 
};
 
int main(int argc, char **argv){
  QApplication app(argc, argv);
  QTable tab(1,1);
  tab.setItem(0,0, new MyTableItem(&tab));
  app.setMainWidget(&tab);
  tab.show();
  return app.exec();
}

#include <qapplication.h>
#include <qtable.h>

class MyTableItem : public QTableItem {
public:
  MyTableItem(QTable *table) : QTableItem(table, QTableItem::OnTyping){}
  void paint(QPainter *p, const QColorGroup &cg, const QRect &cr, bool selected){
   QColorGroup g(cg);
   g.setColor(QColorGroup::Base, Qt::red);
   QTableItem::paint(p, g, cr, selected);
  }

};

int main(int argc, char **argv){
  QApplication app(argc, argv);
  QTable tab(1,1);
  tab.setItem(0,0, new MyTableItem(&tab));
  app.setMainWidget(&tab);
  tab.show();
  return app.exec();
}

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[sumsin]

Problem solved.
You are right. I should use g instead of cg.
Thanks.