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Thursday, May 1st 2008, 2:40pm
Windows Error Message upon Exit
Hello,
I am new to QT and relatively new to c++.
I am trying to write a widget wich displays a number of QLineEdits in a grid layout.
The numberof cells and the aspect ratio are the arguments of the constructor.
Here's what I've written:
!------------------------------------------------------------------------------------------------
#ifndef TEXT_NETVIEWER_H
#define TEXT_NETVIEWER_H
#include <QWidget.h>
#include "QLineEdit.h"
class text_netviewer : public QWidget
{
public:
text_netviewer(int in, int num,QWidget *p=0);
QLineEdit *field;
virtual ~text_netviewer();
protected:
private:
};
#endif // TEXT_NETVIEWER_H
!-------------------------------------------------------------------------------------------------
#include "text_netviewer.h"
#include <cmath>
#include <iostream>
#include "QGridLayout.h"
using namespace std;
text_netviewer::text_netviewer(int in, int n,QWidget *p)
:QWidget(p)
{
int rows=int(ceil(double(n)/double(in)));
QGridLayout *grid=new QGridLayout(this);
field=new QLineEdit[rows*in];
int c=0;
for(int i=rows;i>0;--i)
{
for(int j=0;j<in;j++)
{
grid->addWidget(&field
I am new to QT and relatively new to c++.
I am trying to write a widget wich displays a number of QLineEdits in a grid layout.
The numberof cells and the aspect ratio are the arguments of the constructor.
Here's what I've written:
!------------------------------------------------------------------------------------------------
#ifndef TEXT_NETVIEWER_H
#define TEXT_NETVIEWER_H
#include <QWidget.h>
#include "QLineEdit.h"
class text_netviewer : public QWidget
{
public:
text_netviewer(int in, int num,QWidget *p=0);
QLineEdit *field;
virtual ~text_netviewer();
protected:
private:
};
#endif // TEXT_NETVIEWER_H
!-------------------------------------------------------------------------------------------------
#include "text_netviewer.h"
#include <cmath>
#include <iostream>
#include "QGridLayout.h"
using namespace std;
text_netviewer::text_netviewer(int in, int n,QWidget *p)
:QWidget(p)
{
int rows=int(ceil(double(n)/double(in)));
QGridLayout *grid=new QGridLayout(this);
field=new QLineEdit[rows*in];
int c=0;
for(int i=rows;i>0;--i)
{
for(int j=0;j<in;j++)
{
grid->addWidget(&field
|
C/C++ Source code |
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,i,j);<br /> c++;<br /> }<br /> <br /> }<br /> <br /> }<br /> <br /> text_netviewer::~text_netviewer()<br /> {<br /> //dtor<br /> }<br /> !-------------------------------------------------------------------------------------------------<br /> <br /> This seems to work fine at first. It compiles with no complaints and shows the expected behaviour when run. <br /> When the window is closed however, Windows returns a "the program encountered an error and had to be closed. send error report?" message.<br /> <br /> I use QT 4.3.4 on XP(SP2) with mingw.<br /> <br /> I have no clue why this is. I am beginning to think that I am doing something fundamentally wrong, but can't see what.<br /> <br /> Any help appreciated.<br /> <br /> thans,<br /> <br /> t. |
