#include?“dialog.h“
#include?“ui_dialog.h“
const?static?double?PI=3.1416;
Dialog::Dialog（QWidget?*parent）?:
????QDialog（parent）
????ui（new?Ui::Dialog）
{
????ui->setupUi（this）;
}

Dialog::~Dialog（）
{
????delete?ui;
}

void?Dialog::on_countBtn_clicked（）
{
????bool?ok;
????QString?tempStr;
????QString?valueStr=ui->radiusLineEdit->text（）;
????int?valueInt=valueStr.toInt（&ok）;
????double?area=valueInt*valueInt*PI;//計算圓面積
????ui->areaLabel_2->setText（tempStr.setNum（area））;
}

void?Dialog::on_radiusLineEdit_textChanged（const?QString?&arg1）
{
????bool?ok;
????QString?tempStr;
????QString?valueStr=ui->radiusLineEdit->text（）;
????int?valueInt=valueStr.toInt（&ok）;
????double?area=valueInt*valueInt*PI;//計算圓面積
????ui->areaLabel_2->setText（tempStr.setNum（area））;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????3861??2015-04-14?12:23??CH6\CH601\Geometry\geometry.cpp

?????文件????????870??2015-04-14?12:23??CH6\CH601\Geometry\geometry.h

?????文件????????348??2015-04-14?12:23??CH6\CH601\Geometry\Geometry.pro

?????文件??????18469??2015-04-14?12:23??CH6\CH601\Geometry\Geometry.pro.user

?????文件??????17722??2015-04-14?12:23??CH6\CH601\Geometry\Geometry.pro.user.2.7pre1

?????文件????????183??2015-04-14?12:23??CH6\CH601\Geometry\main.cpp

?????文件????????254??2015-04-14?12:23??CH6\CH602\PaintEx\main.cpp

?????文件??????12964??2015-04-14?12:23??CH6\CH602\PaintEx\mainwidget.cpp

?????文件???????1438??2015-04-14?12:23??CH6\CH602\PaintEx\mainwidget.h

?????文件???????2535??2015-04-14?12:23??CH6\CH602\PaintEx\paintarea.cpp

?????文件????????613??2015-04-14?12:23??CH6\CH602\PaintEx\paintarea.h

?????文件????????391??2015-04-14?12:23??CH6\CH602\PaintEx\PaintEx.pro

?????文件??????18463??2015-04-14?12:23??CH6\CH602\PaintEx\PaintEx.pro.user

?????文件??????17716??2015-04-14?12:23??CH6\CH602\PaintEx\PaintEx.pro.user.2.7pre1

?????文件???????1705??2015-04-14?12:23??CH6\CH603\DrawWidget\drawwidget.cpp

?????文件????????809??2015-04-14?12:23??CH6\CH603\DrawWidget\drawwidget.h

?????文件????????396??2015-04-14?12:23??CH6\CH603\DrawWidget\DrawWidget.pro

?????文件??????18481??2015-04-14?12:23??CH6\CH603\DrawWidget\DrawWidget.pro.user

?????文件??????17734??2015-04-14?12:23??CH6\CH603\DrawWidget\DrawWidget.pro.user.2.7pre1

?????文件????????260??2015-04-14?12:23??CH6\CH603\DrawWidget\main.cpp

?????文件???????2806??2015-04-14?12:23??CH6\CH603\DrawWidget\mainwindow.cpp

?????文件????????635??2015-04-14?12:23??CH6\CH603\DrawWidget\mainwindow.h

?????文件????????187??2015-04-14?12:23??CH6\CH604\SVGTest\main.cpp

?????文件????????682??2015-04-14?12:23??CH6\CH604\SVGTest\mainwindow.cpp

?????文件????????410??2015-04-14?12:23??CH6\CH604\SVGTest\mainwindow.h

?????文件????????446??2015-04-14?12:23??CH6\CH604\SVGTest\SVGTest.pro

?????文件??????18463??2015-04-14?12:23??CH6\CH604\SVGTest\SVGTest.pro.user

?????文件??????17716??2015-04-14?12:23??CH6\CH604\SVGTest\SVGTest.pro.user.2.7pre1

?????文件????????616??2015-04-14?12:23??CH6\CH604\SVGTest\svgwidget.cpp

?????文件????????462??2015-04-14?12:23??CH6\CH604\SVGTest\svgwidget.h

............此處省略776個文件信息