Enabling the button in a QProgressDialog
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Hello,
I am using a QProgressDialog to show the user the progress of an operation. The cancelButton is defined to be disabled till the counter value runs to 100. I have replaced the default cancelButton to a custom one to access the setEnabled method on it. On completion of 100%, the button defined in the QProgressDialog widget should be changed from a disabled state to an enabled state.
The code is defined as:
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#include "mainwindow4.h"
#include<QProgressBar>
#include<QTimer>
#include<QProgressDialog>
#include<QPushButton>mainwindow4::mainwindow4(QWidget *parent) :
QMainWindow(parent)
{
i=0;
p2=new QProgressDialog("Hello World","OK",0,100);
p2->setAutoReset(FALSE);
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(updatePBar()));
timer->start(20);
b=new QPushButton("Hello");
b->setEnabled(FALSE);
p2->setCancelButton(b);
this->setCentralWidget(p2);
}void mainwindow4::updatePBar()
{
if(p2->value()<=100)
{
p2->setValue(i++);
}
else
updateButton();}
void mainwindow4::updateButton()
{
b->setEnabled(TRUE);
p2->setCancelButton(b);
}@
However, on completion of the progress, the state of the button does not change to Enabled. Any idea on what is going wrong here?
The header is attached for reference:
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#ifndef MAINWINDOW4_H
#define MAINWINDOW4_H#include <QMainWindow>
#include<QProgressBar>
#include<QProgressDialog>
#include<QPushButton>class mainwindow4 : public QMainWindow
{
Q_OBJECTprivate:
QProgressBar* p;
QProgressDialog* p2;
QPushButton* b;
int i;public:
explicit mainwindow4(QWidget *parent = 0);signals:
public slots:
void updatePBar();
void updateButton();
};#endif // MAINWINDOW4_H
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