logindlg.cpp

《精通QT4编程》第二章代码整理 加入修改

#include <QtGui/QtGui>
#include "logindlg.h"

CLoginDlg::CLoginDlg(QWidget* parent)
 :	QDialog(parent)
{
	QLabel* usrLabel = new QLabel(tr("用户名:"));
	QLabel* pwdLabel = new QLabel(tr("密  码:"));
	usrLineEdit = new QLineEdit;
	pwdLineEdit = new QLineEdit;
	pwdLineEdit->setEchoMode(QLineEdit::Password);
	QGridLayout* gridLayout = new QGridLayout;
	gridLayout->addWidget(usrLabel, 0, 0, 1, 1);
	gridLayout->addWidget(usrLineEdit, 0, 1, 1, 3);
	gridLayout->addWidget(pwdLabel, 1, 0, 1, 1);
	gridLayout->addWidget(pwdLineEdit, 1, 1, 1, 3);
	
	QPushButton* okBtn = new QPushButton(tr("确定"));
	QPushButton* cancelBtn = new QPushButton(tr("取消"));
	QHBoxLayout* btnLayout = new QHBoxLayout;
	btnLayout->setSpacing(60);
	btnLayout->addWidget(okBtn);
	btnLayout->addWidget(cancelBtn);	
	
	QVBoxLayout* dlgLayout = new QVBoxLayout;
	dlgLayout->setMargin(40);
	dlgLayout->addLayout(gridLayout);
	dlgLayout->addStretch(40);
	dlgLayout->addLayout(btnLayout);
	setLayout(dlgLayout);
	
	connect(okBtn, SIGNAL(clicked()), this, SLOT(accept()));
	connect(cancelBtn, SIGNAL(clicked()), this, SLOT(reject()));
	
	setWindowTitle(tr("登录"));
	resize(300, 200);
}

CLoginDlg::~CLoginDlg()
{
	delete usrLineEdit;
	delete pwdLineEdit;
}

void CLoginDlg::accept()
{
	if(usrLineEdit->text().trimmed() == tr("lcf")
		&& pwdLineEdit->text() == tr("lcf"))
	{
		QDialog::accept();
	}
	else
	{
		QMessageBox::warning(this, 
		tr("警告"), 
		tr("用户或密码错误！"), 
		QMessageBox::Yes);
		usrLineEdit->setFocus();
	}

}