檔案累加和校驗計算

#include"mainwindow.h"

#include"ui_mainwindow.h"

#include<QDebug>

MainWindow::MainWindow(QWidget*parent):

QMainWindow(parent),

ui(newUi::MainWindow)

{

ui->setupUi(this);

}

MainWindow::~MainWindow()

{

deleteui;

}

voidMainWindow::on_action_O_triggered()

{

filename=QFileDialog::getOpenFileName(this,
 

tr("OpenBinFile"),".",

tr("Binfiles(*.bin)"));

if(!filename.isEmpty())

ui->lineEdit->setText(filename);

}

intMainWindow::CHECKSUM(QByteArraybuf)

{

intsum=0;

for(inti=0;i<buf.size();i++)

{

sum+=buf.at(i)&0x000000FF;

}

returnsum;

}

voidMainWindow::on_pushButton_Open_clicked()

{

on_action_T_triggered();

}

voidMainWindow
 
::on_action_T_triggered()

{

QStringscrFile=ui->lineEdit->text();

//讀二進位制檔案

QFilerfile(scrFile);

if(!rfile.open(QIODevice::ReadOnly))

{

QMessageBox::critical(this,"Warning","Can'topenfileforreading",QMessageBox::Ok);

rfile.close();

return;

}

intsum=CHECKSUM(rfile.readAll());

QStringtemp2=QString::number(sum,
 
16);

ui->lineEdit_2->setText("0x"+temp2);

rfile.close();

}

包含標頭檔案：

#ifndefMAINWINDOW_H

#defineMAINWINDOW_H

#include<QMainWindow>

#include<QFileDialog>

#include<QMessageBox>

namespaceUi{

classMainWindow;

}

classMainWindow:publicQMainWindow

{

Q_OBJECT

public:

explicitMainWindow(QWidget*parent=0);

~MainWindow();

intCHECKSUM(QByteArraybuf);

privateslots:

voidon_action_O_triggered();

voidon_pushButton_Open_clicked();

voidon_action_T_triggered();

private:

Ui::MainWindow*ui;

QLabel*label;

QImageimage;

QStringfilename;

};

#endif//MAINWINDOW_H