登录密码，读取TXT数据

#include "keyworddlog.h" keyworddlog::keyworddlog(QObject *parent) : QObject(parent) { QTextCodec *pCodec = QTextCodec::codecForName("system");//获取系统文字编码 QTextCodec::setCodecForLocale(pCodec); QTextCodec::setCodecForCStrings(pCodec); QTextCodec::setCodecForTr(pCodec); sPassword = "123321"; DlgPass.setWindowTitle(QObject::tr("请输入密码！")); DlgPass.setGeometry(110, 110, 361, 155); QFont fontSet("宋体", 20); QFont fontbtn("宋体", 12); LabPassword.setParent(&DlgPass);//设置父子属性 LabPassword.setText(QObject::tr("密码：")); LabPassword.setFont(fontSet); LabPassword.setGeometry(28, 47, 85, 28); EditPassword.setParent(&DlgPass); EditPassword.setFont(fontSet); EditPassword.setGeometry(116, 47, 220, 28); EditPassword.setEchoMode(QLineEdit::Password);//输入密码的格式 EditPassword.setFocus(); BtnPasswordOk.setParent(&DlgPass); BtnPasswordOk.setFont(fontbtn); BtnPasswordOk.setText(tr("确定")); BtnPasswordOk.setGeometry(145, 120, 76, 25); BtnPasswordChange.setParent(&DlgPass); BtnPasswordChange.setFont(fontbtn); BtnPasswordChange.setText(tr("修改密码")); BtnPasswordChange.setGeometry(18, 120, 76, 25); BtnPasswordCancle.setParent(&DlgPass); BtnPasswordCancle.setFont(fontbtn); BtnPasswordCancle.setText(tr("取消")); BtnPasswordCancle.setGeometry(270, 120, 76, 25); connect(&BtnPasswordOk, SIGNAL(clicked()), this, SLOT(BtnPasswordOk_press())); connect(&BtnPasswordCancle,SIGNAL(clicked()), this, SLOT(BtnPasswordCancle_press())); connect(&BtnPasswordChange, SIGNAL(clicked()), this, SLOT(BtnPasswordChange_press())); QFile file("D:\\text.txt"); if(!file.open(QIODevice::WriteOnly | QIODevice::Text)) { QMessageBox::warning(&DlgEdit, tr("文件写入出错！"),tr("文件写入出错，请重新写入！"), QMessageBox::Ok); } QTextStream txtout(&file); txtout << sPassword << endl; file.close(); } void keyworddlog::BtnPasswordOk_press() { sPassword_in = EditPassword.text(); /* QFile file("D:\\text.txt"); if(!file.open(QIODevice::WriteOnly | QIODevice::Text)) { QMessageBox::warning(&DlgEdit, tr("文件写入出错！"),tr("文件写入出错，请重新写入！"), QMessageBox::Ok); } QTextStream txtIn(&file); sPassword = txtIn.readLine(); file.close(); */ if(sPassword_in == sPassword) { emit destroyed(); DlgPass.close(); } else { QMessageBox::warning(&DlgPass,QObject::tr("密码输入错误！"),QObject::tr("密码输入有误，请重新输入！"),QMessageBox::Ok); EditPassword.clear(); EditPassword.setFocus(); } } void keyworddlog::BtnPasswordCancle_press() { EditPassword.clear(); DlgPass.close(); } void keyworddlog::BtnPasswordChange_press() { EditOldPassword.clear(); EditNewPassword1.clear(); EditNewPassword2.clear(); QFont fontSet("宋体", 20); QFont fontBtn("宋体", 12); DlgEdit.setGeometry(220, 220, 361, 282); DlgEdit.setWindowTitle(tr("修改密码")); LabOldpassword.setParent(&DlgEdit); LabOldpassword.setFont(fontSet); LabOldpassword.setText(tr("原密码：")); LabOldpassword.setGeometry(0, 47, 125, 32); LabNewPassword1.setParent(&DlgEdit); LabNewPassword1.setFont(fontSet); LabNewPassword1.setText(tr("新密码：")); LabNewPassword1.setGeometry(0, 107, 125, 32); LabNewPassword2.setParent(&DlgEdit); LabNewPassword2.setFont(fontSet); LabNewPassword2.setText(tr("再次输入：")); LabNewPassword2.setGeometry(0, 169, 125, 32); EditOldPassword.setParent(&DlgEdit); EditOldPassword.setFont(fontSet); EditOldPassword.setGeometry(137, 47, 220, 32); EditOldPassword.setEchoMode(QLineEdit::Password); EditNewPassword1.setParent(&DlgEdit); EditNewPassword1.setFont(fontSet); EditNewPassword1.setGeometry(137, 107, 220,32); EditNewPassword1.setEchoMode(QLineEdit::Password); EditNewPassword2.setParent(&DlgEdit); EditNewPassword2.setFont(fontSet); EditNewPassword2.setGeometry(137, 169, 220,32); EditNewPassword2.setEchoMode(QLineEdit::Password); BtnChangePasswordOk.setParent(&DlgEdit); BtnChangePasswordOk.setFont(fontBtn); BtnChangePasswordOk.setText(tr("确定")); BtnChangePasswordOk.setGeometry(120, 240, 75, 25); BtnChangePasswordCancle.setParent(&DlgEdit); BtnChangePasswordCancle.setFont(fontBtn); BtnChangePasswordCancle.setText(tr("取消")); BtnChangePasswordCancle.setGeometry(250, 240, 75, 25); connect(&BtnChangePasswordOk, SIGNAL(clicked()), this, SLOT(BtnChangePasswordOk_press())); connect(&BtnChangePasswordCancle, SIGNAL(clicked()), this, SLOT(BtnChangePasswordCancle_press())); DlgEdit.show(); } void keyworddlog::BtnChangePasswordOk_press() { sPassword == EditPassword.text(); sNewPassword1 == EditNewPassword1.text(); sNewPassword2 == EditNewPassword2.text(); if(EditOldPassword.text() != sPassword) { QMessageBox::warning(&DlgEdit, tr("原密码输入错误："), tr("原密码输入从错误，请重新输入！"), QMessageBox::Ok); EditOldPassword.clear(); EditNewPassword1.clear(); EditNewPassword2.clear(); EditOldPassword.setFocus(); } else { if(sNewPassword1 != sNewPassword2) { QMessageBox::warning(&DlgEdit, tr("密码输入有误！"), tr("两次密码输入不一致，请重新输入!"), QMessageBox::Ok); EditNewPassword1.clear(); EditNewPassword2.clear(); EditNewPassword1.setFocus(); } else { QMessageBox::information(&DlgEdit, tr("密码修改成功！"), tr("密码修改成功，请返回！"), QMessageBox::Ok); sPassword = EditNewPassword2.text(); QFile file("D:\\text.txt"); file.resize(0); if(!file.open(QIODevice::WriteOnly | QIODevice::Text)) { QMessageBox::warning(&DlgEdit, tr("文件写入出错！"),tr("文件写入出错，请重新写入！"), QMessageBox::Ok); } QTextStream txtout(&file); txtout<<sPassword<<endl; file.close(); DlgEdit.close(); } } } void keyworddlog::BtnChangePasswordCancle_press() { EditOldPassword.clear(); EditNewPassword1.clear(); EditNewPassword2.clear(); DlgEdit.close(); } void keyworddlog::dlgshow() { DlgPass.show(); }