Linux中qt编写登录

一时失言乱红尘 2022-06-04 07:29 48阅读 0赞

//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();  
\}