QTreeWidgetItem decoration

[^NyAw^]

Hi,

In QTreeVidget I'm able to change the decoration of the root items with "setRootIsDecorated(false)". The problem is that the children of the root items are still decorated and I can't find the way to disable it.

Thanks,

[wysota]

Subclass the widget and reimplement QTreeView::drawBranches() leaving the implementation empty.

[^NyAw^]

Hi,

Thanks wysota.

Another question not really Qt related:
I want to redefine the method you told, but I don't want to create another h and cpp files so I want to add the redefinition in myClass.h:

myClass.h

#ifndef MYCLASS_H
#define MYCLASS_H
 
class myClass : public QObject
{
    Q_OBJECT
 
public:
    myClass(QWidget*);
    ~myClass();
private:
...
...
}
#endif

#ifndef MYCLASS_H
#define MYCLASS_H

class myClass : public QObject
{
    Q_OBJECT

public:
    myClass(QWidget*);
    ~myClass();
private:
...
...
}
#endif

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Can you tell me how to add the redefinition in the same h file?

Thanks,

[wysota]

You can declare more than one class in a single .h file. In fact you can write your whole application in a single file.

[^NyAw^]

Hi,

I have problems on this code. The linker returns LNK2019 error:

myApp error LNK2019: sÃ*mbolo externo "public: __thiscall QTreeWidget2::QTreeWidget2(class QWidget *)" (??QTreeWidget2@@QAE@PAVQWidget@@@Z) sin resolver al que se hace referencia en la función "public: __thiscall myClass::myClass(class QWidget *,class myApp &)" (??0myClass@@QAE@PAVQWidget@@AAVmyApp@@@Z)

myClass.h

#ifndef MYCLASS_H
#define MYCLASS_H
 
class myClass : public QObject
{
    Q_OBJECT
 
public:
    myClass(QWidget*);
    ~myClass();
private:
...
...
};
#endif    //MYCLASS_H
 
#ifndef QTREEWIDGET2_H
#define QTREEWIDGET2_H
 
#include <QTreeWidget>
#include <QPainter>
#include <QRect>
#include <QModelIndex>
 
class QTreeWidget2 : public QTreeWidget
{
    Q_OBJECT
 
public:
    QTreeWidget2 (QWidget * parent = 0);
    ~QTreeWidget2 ();
    void drawBranches(QPainter* painter,const QRect& rect,const QModelIndex& index) const {;};        //Don't want to paint the branches
};
#endif    //QTREEWIDGET2_H

#ifndef MYCLASS_H
#define MYCLASS_H

class myClass : public QObject
{
    Q_OBJECT

public:
    myClass(QWidget*);
    ~myClass();
private:
...
...
};
#endif    //MYCLASS_H

#ifndef QTREEWIDGET2_H
#define QTREEWIDGET2_H

#include <QTreeWidget>
#include <QPainter>
#include <QRect>
#include <QModelIndex>

class QTreeWidget2 : public QTreeWidget
{
    Q_OBJECT

public:
    QTreeWidget2 (QWidget * parent = 0);
    ~QTreeWidget2 ();
    void drawBranches(QPainter* painter,const QRect& rect,const QModelIndex& index) const {;};        //Don't want to paint the branches
};
#endif    //QTREEWIDGET2_H

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What I'm donig wrong?

Thanks,

[wysota]

The linker claims you didn't implement the constructor for your tree widget class.

[^NyAw^]

Hi,

Thank you very much.