Getting error while declaring QVector of class type in Qt.
Error :"incomplete type is not allowed"
I didn't understand what causes this error.
if i #include "storage.h" in main.cpp and declare a Qvector of class storeage it works fine but when i do the same in waveform class it reports an error.
I've tried forward declaring storage class in waveform class but still getting the same error.
Any Help??
main.cpp
#include "test_subject_02.h"
#include <QtGui/QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
TEST_SUBJECT_02 w;
w.show();
return a.exec();
}
test_subject_02.h
#ifndef TEST_SUBJECT_02_H
#define TEST_SUBJECT_02_H
#include <QtGui/QMainWindow>
#include "ui_test_subject_02.h"
#include"waveform.h"
#include "storage.h"
class TEST_SUBJECT_02 : public QMainWindow
{
Q_OBJECT
public:
TEST_SUBJECT_02(QWidget *parent = 0, Qt::WFlags flags = 0);
waveform *wv;
~TEST_SUBJECT_02();
private:
Ui::TEST_SUBJECT_02Class ui;
};
#endif // TEST_SUBJECT_02_H
test_subject_02.cpp
#include "test_subject_02.h"
TEST_SUBJECT_02::TEST_SUBJECT_02(QWidget *parent, Qt::WFlags flags)
: QMainWindow(parent, flags)
{
ui.setupUi(this);
QVector<storage> ser; //works fine here
wv->readfile("e:/testing2/result/3/abc.cur");
}
TEST_SUBJECT_02::~TEST_SUBJECT_02()
{
}
waveform.h
#ifndef WAVEFORM_H
#define WAVEFORM_H
#include "storage.h"
#include <QObject>
class waveform : public QObject
{
Q_OBJECT
public:
waveform(QObject *parent=0);
void readfile(QString);
QVector <storage> myvector ; // incomplete type is not allowed
~waveform();
private:
};
#endif // WAVEFORM_H
waveform.cpp
#include "waveform.h"
waveform::waveform(QObject *parent)
: QObject(parent)
{
}
void waveform::readfile(QString file)
{
QVector<storage> sw; //again error incomplete type is not allowed
}
waveform::~waveform()
{
}
storage.h
#ifndef STORAGE_H
#define STORAGE_H
#include <QObject>
class storage : public QObject
{
Q_OBJECT
public:
storage(QObject *parent);
storage();
storage(QString,QString);
~storage();
private:
QString x;
QString y;
};
#endif // STORAGE_H
storage.cpp
#include "storage.h"
storage::storage(QObject *parent)
: QObject(parent)
{
}
storage::storage(QString xcord,QString ycord)
{
x=xcord;
y=ycord;
}
storage::storage()
{
}
storage::~storage()
{
}
You need to explicitly include QVector in necessary file (waveform.h i believe), since QT uses a lot of forward declarations, while they appear as correct classes in IDE, but they won't compile, if proper definition is not included in file.