//head.h
ifndef HEAD_H
define HEAD_H
include”QtWidgets”
class QLabel; class QLineEdit; class QPushButton;
class LoginDialog:public QDialog { Q_OBJECT public: LoginDialog(QWidget *parent = 0); ~LoginDialog();
private slots: // void xianshi(); void Register(); void login(); private: QLabel *label1; QLabel *label2; QLineEdit *lineEdit1; QLineEdit *lineEdit2; QPushButton *loginbutton; QPushButton *registerbutton; QString name; QString password; QStringList lines; };
endif
//login.cpp
include “QtWidgets”
include “QTextStream”
include “head.h”
LoginDialog::LoginDialog(QWidget *parent):QDialog(parent) { label1 = new QLabel(tr(“number”)); label2 = new QLabel(tr(“password”)); lineEdit1 = new QLineEdit(); lineEdit2 = new QLineEdit; lineEdit1->setEchoMode(QLineEdit::Normal); lineEdit2->setEchoMode(QLineEdit::Password); lineEdit1->setValidator(new QIntValidator(lineEdit1));
loginbutton = new QPushButton(tr(“login”)); registerbutton = new QPushButton(tr(“regiter”));
QHBoxLayout *a = new QHBoxLayout; QHBoxLayout *b = new QHBoxLayout; QHBoxLayout *c = new QHBoxLayout;
a->addWidget(label1); a->addWidget(lineEdit1);
b->addWidget(label2); b->addWidget(lineEdit2);
c->addWidget(loginbutton); c->addWidget(registerbutton);
QVBoxLayout *totalLayout = new QVBoxLayout; totalLayout->addLayout(a); totalLayout->addLayout(b); totalLayout->addLayout(c); connect(registerbutton,SIGNAL(clicked()),this,SLOT(Register())); connect(loginbutton,SIGNAL(clicked()),this,SLOT(login())); setLayout(totalLayout); setWindowTitle(tr(“login”));
setFixedHeight(sizeHint().height());
}
LoginDialog::~LoginDialog() {
}
void LoginDialog::Register() { name=lineEdit1->text(); password=lineEdit2->text(); QFile file(“./a.txt”); if(file.open(QIODevice::WriteOnly|QIODevice::Append)) { QTextStream out(&file); out<
include “QApplication”
include “head.h”
int main(int argc, char *argv[]) { QApplication app(argc,argv); LoginDialog *dialog = new LoginDialog; dialog->show(); return app.exec(); }
