#include?“affair.h“

Affair::Affair（QWidget?*parent）:?QWidget（parent）
{
????te?=?new?QTextEdit;
????te->setReadOnly（false）;
????saveBtn?=?new?QPushButton（tr（“Save“））;
????preBtn?=?new?QPushButton（tr（“Show?Previous“））;
????newBtn?=?new?QPushButton（tr（“New“））;

????QHBoxLayout?*hl?=?new?QHBoxLayout;
????hl->addWidget（newBtn）;
????hl->addWidget（saveBtn）;
????hl->addWidget（preBtn）;

????QVBoxLayout?*m?=?new?QVBoxLayout;
????m->addWidget（te）;
????m->addLayout（hl）;
????this->setLayout（m）;

????connect（newBtnSIGNAL（clicked（））thisSLOT（newaff（）））;
????connect（saveBtnSIGNAL（clicked（））thisSLOT（save（）））;
????connect（preBtnSIGNAL（clicked（））thisSLOT（pre（）））;
}

void?Affair::newaff（）
{
????te->setPlainText（““）;
????te->setReadOnly（false）;
}

void?Affair::save（）
{
????QString?affstr?=?te->toPlainText（）;

????QFile?file（“affair.daa“）;
????if（!file.open（QIODevice::Append））
????{
????????QMessageBox::information（NULL“Error““Can‘t?write?the?file!“）;
????????return?;
????}

????QDataStream?out（&file）;
????out<????QMessageBox::information（NULL“News““Saved?sucess!“）;
????file.close（）;
}

void?Affair::pre（）
{
????QString?affstr;
????QFile?file（“affair.daa“）;
????if（!file.open（QIODevice::ReadOnly））
????{
????????QMessageBox::information（NULL“Error““Can‘t?read?the?file!“）;
????????return?;
????}

????static?int?id?=?0;
????QDataStream?in（&file）;
????QVector?affv;
????while（!in.atEnd（））
????{
????????in>>affstr;
????????affv.append（affstr）;
????}

????id?=?（id?-?1?+?affv.count（））?%?affv.count（）;
????te->setPlainText（affv[id]）;
????te->setReadOnly（true）;
????file.close（）;
}

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

?????文件???????1678??2011-06-08?16:29??StudentManagementSystem\affair.cpp

?????文件???????1260??2016-10-16?22:51??StudentManagementSystem\Class.pic

?????文件???????2919??2017-03-25?21:29??StudentManagementSystem\debug\moc_affair.cpp

?????文件???????2858??2017-03-25?21:29??StudentManagementSystem\debug\moc_inputwidget.cpp

?????文件???????3474??2017-03-25?21:29??StudentManagementSystem\debug\moc_mainwindow.cpp

?????文件???????2991??2017-03-25?21:29??StudentManagementSystem\debug\moc_photopanel.cpp

?????文件?????153088??2017-03-25?21:30??StudentManagementSystem\debug\StudentManagementSystem.exe

?????文件????1381396??2017-03-25?21:30??StudentManagementSystem\debug\StudentManagementSystem.ilk

?????文件????2771968??2017-03-25?21:30??StudentManagementSystem\debug\StudentManagementSystem.pdb

?????文件??????81180??2017-03-25?21:29??StudentManagementSystem\GeneratedFiles\qrc_resource.cpp

?????文件???????2198??2017-03-25?21:29??StudentManagementSystem\GeneratedFiles\ui_mainwindow.h

?????文件???????2533??2011-06-10?13:05??StudentManagementSystem\inputwidget.cpp

?????文件????????533??2011-06-03?12:51??StudentManagementSystem\inputwidget.h

?????文件????????967??2011-06-08?21:38??StudentManagementSystem\main.cpp

?????文件???????4800??2011-06-10?13:29??StudentManagementSystem\mainwindow.cpp

?????文件????????958??2011-06-08?20:05??StudentManagementSystem\mainwindow.h

?????文件????????654??2011-06-01?23:14??StudentManagementSystem\mainwindow.ui

?????文件????????985??2011-03-30?13:19??StudentManagementSystem\next.png

?????文件???????1882??2011-06-08?21:40??StudentManagementSystem\photopanel.cpp

?????文件????????430??2011-06-08?20:52??StudentManagementSystem\photopanel.h

?????文件????????962??2011-03-30?13:19??StudentManagementSystem\pre.png

?????文件????????148??2011-06-08?21:35??StudentManagementSystem\resource.qrc

?????文件??????13485??2011-06-08?21:34??StudentManagementSystem\screen.PNG

?????文件????????156??2011-06-07?23:07??StudentManagementSystem\student.cpp

?????文件????????988??2011-06-08?09:29??StudentManagementSystem\student.h

?????文件????1944576??2017-03-25?21:31??StudentManagementSystem\StudentManagementSystem.ncb

?????文件????????537??2011-06-08?20:10??StudentManagementSystem\StudentManagementSystem.pro

?????文件??????12455??2011-06-10?13:32??StudentManagementSystem\StudentManagementSystem.pro.user

?????文件??????21256??2017-03-25?21:29??StudentManagementSystem\StudentManagementSystem.vcproj

?????文件???????1461??2017-03-25?21:31??StudentManagementSystem\StudentManagementSystem.vcproj.j-PC.j.user

............此處省略25個文件信息