博主开始利用业余时间学习QT了，完成学习写界面的伟大理想。。。。。。。Qt初步学习到对话框，晚上看着给的截面图尝试自己写代码完成界面。。。。
简单介绍下：
Qt进度条有两种
1、QProgressBar
2、QProgressDialog
下面给出代码完成这两种进度条的实现：
#ifndef DIALOG_H
#define DIALOG_H
#include <QDialog>
#include<QLabel>
#include<QLineEdit>
#include<QProgressBar>
#include<QPushButton>
#include<QComboBox>
#include<QGridLayout>
class Dialog : public QDialog
{
Q_OBJECT
public:
Dialog(QWidget *parent = 0);
~Dialog();
private slots:
void showprogress();
private:
QLabel *filename;
QLineEdit *filenum;
QLabel *showlabel;
QComboBox *showshow;
QProgressBar * progress;
QPushButton *start;
QGridLayout *mainlayout;
};
#endif // DIALOG_H
#include "dialog.h"
#include<QProgressDialog>
Dialog::Dialog(QWidget *parent)
: QDialog(parent)
{
setWindowTitle(tr("Progress"));
QFont fontdefine("ZYSong18030",12);
setFont(fontdefine);
filename=new QLabel;
filename->setText(tr("文件数目:"));
filenum=new QLineEdit ;
filenum->setText(tr("10000"));
showlabel=new QLabel;
showlabel->setText(tr("显示类型："));
showshow=new QComboBox;
showshow->addItem(tr("progressbar"));
showshow->addItem(tr("progressdialog"));
progress=new QProgressBar;
start=new QPushButton;
start->setText(tr("开始"));
mainlayout=new QGridLayout(this);
mainlayout->addWidget(filename,0,0);
mainlayout->addWidget(filenum,0,1);
mainlayout->addWidget(showlabel,1,0);
mainlayout->addWidget(showshow,1,1);
mainlayout->addWidget(progress,2,0,1,2);
mainlayout->addWidget(start,3,1);
mainlayout->setMargin(15);
mainlayout->setSpacing(10);
connect(start,SIGNAL(clicked()),this,SLOT(showprogress()));
}
void Dialog::showprogress()
{
bool ok;
int num=filenum->text().toInt(&ok);
if (showshow->currentIndex()==0)
{
progress->setRange(0,num);
for(int i=0;i<num+1;i++)
{
progress->setValue(i);
}
}else if(showshow->currentIndex()==1)
{
QProgressDialog *progressdialog=new QProgressDialog(this);
QFont fontdefine("ZYSong18030",12);
setFont(fontdefine);
progressdialog->setWindowModality(Qt::WindowModal);
progressdialog->setMinimumDuration(5);
progressdialog->setWindowTitle(tr("等待"));
progressdialog->setLabelText(tr("copy..."));
progressdialog->setCancelButton(new QPushButton(tr("cancel")));
progressdialog->setRange(0,num);
for(int i=0;i<num+1;i++)
{
progressdialog->setValue(i);
if(progressdialog->wasCanceled())
return;
}
}
}
Dialog::~Dialog()
{
}
#include "dialog.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Dialog w;
w.show();
return a.exec();
}
