Unable to define a new type with QVariant

[max2g]

Can someone tell me what's wrong with the following code:

GKey gg1(1, "Hi");
 
int id = qRegisterMetaType<GKey>("GKey");
 
QVariant testV(id, &gg1);
 
GKey gg2;
 
if (testV.canConvert<GKey>())
gg2 = testV.value<GKey>();

GKey gg1(1, "Hi");

int id = qRegisterMetaType<GKey>("GKey");

QVariant testV(id, &gg1);

GKey gg2;

if (testV.canConvert<GKey>())
gg2 = testV.value<GKey>();

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The last line gives the following error :

"error: no matching function for call to `GKey::GKey(GKey)"

The GKey.h file contains :

#ifndef KEY_H
#define KEY_H
 
#include "SmartPtr.h"
#include <QList>
#include <QMetaType>
 
class GKey : public QObject
{
public:
GKey();
GKey(long type, QString uuid);
virtual ~GKey();
 
const GKey& operator=(const GKey& key);
virtual bool operator==(const GKey& key) const;
virtual bool operator!=(const GKey& key) const;
 
inline long getType() { return type_; };
void setType(long type) {type_ = type;};
 
inline QString getUuid() { return uuid_; };
void setUuid(QString uuid) {uuid_ = uuid;};
 
static long getMetaNo(){ return 6000;};
 
explicit GKey(const GKey& key);
explicit GKey(const GKey* key);
 
void copy(const GKey& key);
void free();
 
void initializeGKey(long constructorType);
void finishGKey(long constructorType);
 
protected:
long type_;
QString uuid_;
 
long constructorType_;
};
 
Q_DECLARE_METATYPE(GKey)
 
typedef SmartPtr<GKey> SmartPtrGKey;
typedef QList< SmartPtrGKey > SmartPtrGKeyList;
 
 
#endif

#ifndef KEY_H
#define KEY_H

#include "SmartPtr.h"
#include <QList>
#include <QMetaType>

class GKey : public QObject
{
public:
GKey();
GKey(long type, QString uuid);
virtual ~GKey();

const GKey& operator=(const GKey& key);
virtual bool operator==(const GKey& key) const;
virtual bool operator!=(const GKey& key) const;

inline long getType() { return type_; };
void setType(long type) {type_ = type;};

inline QString getUuid() { return uuid_; };
void setUuid(QString uuid) {uuid_ = uuid;};

static long getMetaNo(){ return 6000;};

explicit GKey(const GKey& key);
explicit GKey(const GKey* key);

void copy(const GKey& key);
void free();

void initializeGKey(long constructorType);
void finishGKey(long constructorType);

protected:
long type_;
QString uuid_;

long constructorType_;
};

Q_DECLARE_METATYPE(GKey)

typedef SmartPtr<GKey> SmartPtrGKey;
typedef QList< SmartPtrGKey > SmartPtrGKeyList;


#endif

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Thank you !

[jpn]

Why explicit copy constructor?

[max2g]

The EXPLICIT was required because I don't want to use these method when implicit conversion is required but this seems to be the problem !

If I remove the EXPLICIT keyword, the compilation is Ok !

I saw that my original post was edited. Is there a special procedure to follow when a post must be edited ????

Thank you !

Max2G

[jpn]

I saw that my original post was edited. Is there a special procedure to follow when a post must be edited ????

I added [code] and [quote] tags to make it a bit more readable. Wrapping code snippets with [code] tags (the "#" button in editor) produces line numbers and syntax highlighting plus allows indentation, thus makes code snippets more readable. For more details: http://www.qtcentre.org/forum/misc.php?do=bbcode