#ifndef __HELLO_H__
#define __HELLO_H__
#include <QLineEdit>
#include <QPushButton>

class Good:public QWidget
{
	Q_OBJECT
	public:
		Good(QWidget *parent=0);
	private slots:
		void func1();
	public:
		QLineEdit *edit;
		QPushButton *btn1;
};

#endif // __HELLO_H__


#include "hello.h"
#include <QGridLayout>
#include <QDoubleValidator>
#include <QString>
#include <QmessageBox>
int k;
double arg;
double res;
Good::Good(QWidget *parent):QWidget(parent)
{
	resize(300,300);
	edit=new QLineEdit(this);
	edit->setValidator(new QDoubleValidator(-999999.0,
             999999.0, 6, edit));
	edit->setAlignment(Qt::AlignRight);
	edit->setGeometry(10,10,280,25);
	edit->clear();
 	edit->setEnabled("False");
	btn1=new QPushButton("1",this);

      QGridLayout *layout = new QGridLayout;
      layout->addWidget(edit,0,0);
      layout->addWidget(btn1,3,0);
  
      setLayout(layout);

	connect(btn1,SIGNAL(clicked()),this,SLOT(func1()));
}

void Good::func1()
{
	QString x = edit->text();
	QString y = "1";
	x.append(y);
	edit->setText(x);
}

... myFunc(bool isEnable, ...) {
  if (isEnable.toString() == "True") {
    ...