[SOLVED]Qvector Problem instansiate Thanks ALL

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;
}@

toho71

copy and paste is the to magic words
Ok now it works again.

I have to look in my header prj to and see if this is the magic case.

toho71

in my testcase i do like this in my constructor

@GlobalParams::GlobalParams()
{
testRunning(false);

qDebug() << presetVector.isEmpty();
qDebug() << presetVector.size() << " vectorsize  and kapacitet =" << presetVector.capacity();

//Create a tempobject for test
ClPresetLoadsTestValues p(10,10,10);

qDebug() << "create  object ";

presetVector.append(p);
qDebug() << "appendat obj";
qDebug() << presetVector.size() << " vectorsize  and kapacitet =" << presetVector.capacity();

}@

and I got this text in my consol

true
0 vectorsize and kapacitet = 0
create ClPresetLoadsTestValues
create object
delete ClPresetLoadsTestValues
appendat obj
1 vectorsize and kapacitet = 1
delete ClPresetLoadsTestValues

And later when I try to add a ClPresetLoadsTestValues my program crashes and NO i don't delete the object.

here is my object

@@ClPresetLoadsTestValues::ClPresetLoadsTestValues()
{
qDebug() << "create ClPresetLoadsTestValues";
}

ClPresetLoadsTestValues::ClPresetLoadsTestValues(int k, int m, int s)
{
this->kw = k;
this->min = m;
this->sec = s;
qDebug() << "create ClPresetLoadsTestValues";
}

ClPresetLoadsTestValues::~ClPresetLoadsTestValues()
{
qDebug() << "delete ClPresetLoadsTestValues";
}

//set and getters
@

and my func to add the obj

@void GlobalParams::addValuesToLoadsTestTemp(int kw, int min, int sec)
{
ClPresetLoadsTestValues p(kw,min,sec);

qDebug() << "try to append";
 qDebug() << this->presetVector.size() << " vektorstorlek"; //IT crashes here

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

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

}

@

p-himik

Can you make another tarball?