Crashing problem while checking for QCheckBox is CHECKED/UNCHECKED

[Channareddy]

hi,
Here is my code for checking wheater the QCheckBox is checked or not.
I don't want to use SIGNALS & SLOTS.Give me some solution which has no SIGNALS & SLOT coz using SIGNALS & SLOTS its too lengthy for my code as i have to check 25 checkBoxes.So please keep it short n sweet..

QCheckBox *floor1 = new QCheckBox("Floor 1",this);
floor1->setCheckable(1);

if(floor1->isChecked()) //the code is crashing at this line
{
if(this->door11->isChecked())
line.append("Door 11");
}

Also i tried with below code but same problem.

if(floor1->checkState()==Qt::Checked) //the code is crashing at this line
{
if(this->door11->isChecked())
line.append("Door 11");
}

Please help me to overcome this issue ASAP...

[ChrisW67]

The most likely problem is that floor1 is either NULL or pointing at a no-longer-valid location. What is the value of floor1 at the line it crashes?

I can only assume that the scope in which:

QCheckBox *floor1 = new QCheckBox("Floor 1",this);
floor1->setCheckable(1);  // unnecessary, check boxes are checkable by default

QCheckBox *floor1 = new QCheckBox("Floor 1",this);
floor1->setCheckable(1);  // unnecessary, check boxes are checkable by default

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occurs, and the remainder occurs are not the same or the crash would occur at line 2.

[Santosh Reddy]

QCheckBox *floor1 = new QCheckBox("Floor 1",this);
floor1->setCheckable(1);
 
//make sure floor1 is properly allocated, are you sure the above new statement is called before this?
if(floor1->isChecked()) //the code is crashing at this line
{
if(this->door11->isChecked())
line.append("Door 11");
}

QCheckBox *floor1 = new QCheckBox("Floor 1",this);
floor1->setCheckable(1);

//make sure floor1 is properly allocated, are you sure the above new statement is called before this?
if(floor1->isChecked()) //the code is crashing at this line
{
if(this->door11->isChecked())
line.append("Door 11");
}

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[Channareddy]

Thank you..
From next time i will follow code posting guidelines Chris..Thanks for the reply..

Thank you.. i got it done..