[SOLVED]Qvector Problem instansiate Thanks ALL

toho71

I got a little confusing problem with one of my Vectors.

In my headerfile I set it up like this.
@QVector <ClPresetLoadsTestValues> presetVector;
@

later when I want to use it i try to add some Object with append like this
@if (presetVector.isEmpty())
qDebug() << "Empty";
else
qDebug() << "SIZE " << presetVector.size() ;

presetVector.append(p);

@

but my program crashes

I have tried to do like this also
@QVector <ClPresetLoadsTestValues>* presetVector;
@

and then i my constructor using new but with the same result;
anyone???

p-himik

At what point your program actually crashes? When you create the QVector or whent you try to append to it?

toho71

on isEmpty()

giesbert

That needs more code to evaluate. From what I see, it is correct. In which function do you call isEmpty? Where do you create it? where is the constructor, ...?

p-himik

Do other containers or QVector with other type cause crash?

toho71

My h.file
@#ifndef GLOBALPARAMS_H
#define GLOBALPARAMS_H
#include <QVector>
#include <QList>
#include <QTime>
#include <clpresetloadstestvalues.h>

class GlobalParams
{
public:
GlobalParams();
~GlobalParams();
enum Tester {Starttest, Loadtest, Batterytest, ParallellToMains, MainsFailureTEst, PresetLoadsTest , Notest};

void setTest(int);
int getTest();

void testRunning(bool );
bool getTestRunning();

void setNBState(int s);
void setGBState(int s);
void setRunningState(int s);
void setRunningMode(int s);

int getNBState();
int getGBState();
int getRunningState();
int getRunningMode();

void addValuesToLoadsTestTemp(int,int,int);

 double getRandomNumbers(float max, float min);
 QString roundnumbers(double dNumber);

private:
int testTyp;

int NBState;
int GBState;
int RunningState;
int RunningMode;
bool TestRunning;

QVector <ClPresetLoadsTestValues> presetVector;

};
@

in my cpp file
@void GlobalParams::addValuesToLoadsTestTemp(int kw, int min, int sec)
{
ClPresetLoadsTestValues p;
p.setKW(kw);
p.setMin(min);
p.setSec(sec);

if (presetVector.isEmpty())
    qDebug() << "Empty";
 else
    qDebug() << "SIZE " << presetVector.size() ;


presetVector.append(p);
 qDebug() << "appendad";

}

@

My h.file to the object I want to save

@class ClPresetLoadsTestValues
{
public:
ClPresetLoadsTestValues();
ClPresetLoadsTestValues(int k, int m, int s);
~ClPresetLoadsTestValues();

//set
void setKW(int k);
void setMin(int k);
void setSec(int k);

//get
int getKw();
int getMin();
int getSec();

private:
int kw;
int min;
int sec;

};
@
I tried with a Struct also but same crash

toho71

I'm using a vector in a different place in my application and there is no problem to use.

Kxyu

Check for that: you declare your presetVector like a value, so that constructor of it is called before the constructor of GlobalParams. So may be the object of GlobalParams haven't been instantiated yet?

toho71

I have tried to do like this also.

@QVector <.theClass> *myVector;
@
and in the constructor of globalparams

@myVector = new QVector<theClass>();
@
but same crash ;

Kxyu

Ok, once again, check if constructor of GlobalParams is called, add there qDebug()<<"anything";

toho71

It's the first thing I do in my program.

I got a lot of parameters in that object that I use in other places so thats no problem.

goetz

Please provide a small, complete, compilable and runnable sample program. We can have a look if and where it crashes ourselves then.

toho71

Now I'm back to my Work and will send a small application with this Vector problem.
I have put some QDebug lines in the code to:

But where could I upload the program

p-himik

I think that any file sharing hosting will be suitable. For example try http://rghost.net/

giesbert

look for a file hoster (e.g. gitorious.org, but you need a logon) or any other

toho71

I have discovered a problem know that is a little confusing.

When I try to append a Object or a struct thats not in the class where the vector is the program crashes but when I put a struct inside the class and append this to the vector it works fine

toho71

Here is not the TAR file to test

p-himik

Your code works without any crashes. I didn't do any changes though.

toho71

Try again with this code
I had comment the problem spots in the last code.
The new one is here
"Vectorproblems":http://rghost.net/31386231

pls

p-himik

toho71 either you have to read more about C++ or you did horrible typo. Here it is:
@myClass::~myClass()
{
delete this;
}@