[SOLVED] tableWidget causes the program to finish unexpectedly

dndeed

Hi. I am trying to add in fields to a table widget. I have a widget created in my .ui file, and I'm trying to add to it. For some reason, the program is quitting unexpectedly without adding the object.

My code is:
@
ui->tableWidget->insertRow(0);
//QCheckBox* checkBox = newQCheckBox; //commented out until I can at least create an empty row
//ui->tableWidget->setCellWidget(0,0,checkBox);
@

Does anyone know why this would cause an unexpected crash with no error message displayed? If not, are there any methods to debug this problem?

SGaist

Hi,

You didn't set any QTableWidgetItem on the new row so it can't contain anything

dndeed

I'm sorry, I don't quite understand. I thought the insertRow command only took the one integer as an augment. Is the QTableWidgetItem set before or after the insertRow?

raven-worx

where does the program crash?
Run it in QtCreator (for example) and post the stack trace of the crash.
Hard to tell where the cause is with just a single line of code.

dndeed

The program crashes inside the insertRow line. I added
@
qDebug() << "Before Insert";
ui->tableWidget->insertRow(0);
qDebug() << "After Insert";
@

and my output is
Starting C:\blabla\TheMAPStore...
Before Insert
The program has unexpectedly finished.
C:\blabla\TheMAPStore exited with code -1073741819

I didn't notice that error code before. I'll look into that and see if it explains things for me.

EDIT: It seems this error code has to do with missing dll's. I am using #include's to include QTableWidget and QCheckBox. Do I need to manually add those dll's to my project file? If so, where are they found?

raven-worx

did you probably forgot to call
@ui->setupUi(this);@
in your constructor?

Please show some more code...

dndeed

main.cpp:
@
int main(int argc, char *argv[])
{
QApplication a(argc, argv);

MainWindow w;
w.show();

return a.exec&#40;&#41;;

}
@

mainwindow.cpp:
@
#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->tableWidget->insertRow(0);
ui->setupUi(this);
}

MainWindow::~MainWindow()
{
delete ui;
}
@

dndeed

Oh, I'm an idiot. setupUi(this) needs to come first. Thanks for everyone help!

raven-worx

you try to access the tablewidget before you are initializing it with setupUi() ...