Global QMetaObject

Henrik

Is there a way to get a global QMetaObject from which ich can get the QMetaEnum for Qt::Alignment to get a String representation of my alignment or an Qt::Alignment from a String ?

sabrog

Of course:

@
#include <QtCore/QTextStream>
#include <QtCore/QMetaEnum>

struct StaticQtMetaObject : public QObject
{
static inline const QMetaObject& get() {return staticQtMetaObject;}
};

int main(int argc, char *argv[])
{
const QMetaObject& mo = StaticQtMetaObject::get();
int index = mo.indexOfEnumerator("Alignment");
QMetaEnum me = mo.enumerator(index);
Qt::Alignment alignment = Qt::AlignLeft;
QTextStream(stdout) << me.valueToKey(alignment) << endl;
return 0;
}
@

Henrik

Thank you !

I didn't know that a staticQtMetaObject exists.

Dolphin

Am I understanding this right? This only gets enums from Qt name space right?

How would I do the same thing for QListView::ViewMode??

Henrik

There is a QListView::staticMetaObject

Dolphin

Hmm, that is what I thought but my code does not work - am I doing something blonde? :-)

@class StaticQtMetaObject : public QObject
{
public:
static inline const QMetaObject& get() {return staticQtMetaObject;}
};

class StaticQtMetaAbstractItemView : public QAbstractItemView
{
public:
static inline const QMetaObject& get() {return staticQtMetaObject;}
};@
@int CGuide::getEnumNumber(QString enumString, QString enumName)
{
int indexValue(0);
int index = StaticQtMetaObject::get().indexOfEnumerator(enumName.toStdString().c_str());
if(index >= 0)//the enum found
{
QMetaEnum metaEnum = StaticQtMetaObject::get().enumerator(index);
indexValue = metaEnum.keyToValue(enumString.toStdString().c_str());
}
else
{
index = StaticQtMetaAbstractItemView::get().indexOfEnumerator(enumName.toStdString().c_str());
if(index >= 0)//the enum found
{
QMetaEnum metaEnum = StaticQtMetaObject::get().enumerator(index);
indexValue = metaEnum.keyToValue(enumString.toStdString().c_str());
}
}
return indexValue >= 0 ? indexValue : 0;//always default - get negative numbers if code above fails
}@

Henrik

The second
@QMetaEnum metaEnum = StaticQtMetaObject::get().enumerator(index);@

should be

@QMetaEnum metaEnum = StaticQtMetaAbstractItemView::get().enumerator(index);@

I think you dont need the StaticQtMetaAbstractItemView class and you can just use QAbstractItemView::staticMetaObject.
If you use it, it has to look like this:

@class StaticQtMetaAbstractItemView : public QAbstractItemView
{
public:
static inline const QMetaObject& get() {return staticMetaObject;}
};@

instead of
@ static inline const QMetaObject& get() {return staticQtMetaObject;}@

staticQtMetaObject is just a special case for the Qt namespace

Dolphin

So I should be able to write

@int index = QAbstractItemView::staticMetaObject.indexOfEnumerator(enumName.toStdString().c_str());
QMetaEnum metaEnum = StaticQtMetaAbstractItemView::get().enumerator(index);@

and no other code??

Tried this with:

enumName = QListView::Flow
and
enumName = Flow

but it never finds the enum