QGroupBox添加QCheckBox和QLineEdit限制只能整数输入,QComboBox添加选项Item,QLineEdit密码形式.QWidget添加背景,

来源：互联网发布：软件破解网站编辑：程序博客网时间：2024/05/17 02:22

1.一个QGroupBox 中添加QCheckBox,控制这个QGroupBox是否可用,当check为true时QGroupBox可用,反之不可用.group里有个限制1000以内的整形数的QLineEdit和一个QLabel

m_LineEditCustom = new QLineEdit;m_LineEditCustom->setValidator(new QIntValidator(1, 999, m_LineEditIterate));m_GroupCustom = new QGroupBox(QString("输入初始值"));m_GroupCustom->setCheckable(true);m_GroupCustom->setChecked(false);QHBoxLayout* hLayout = new QHBoxLayout;hLayout->addWidget(new QLabel("输入值:"));hLayout->addWidget(m_LineEditCustom);m_GroupCustom->setLayout(hLayout);

2.QComboBox添加选项Item

QStringList DrawTypeList;DrawTypeList.clear();DrawTypeList.push_back(QString("第一个"));DrawTypeList.push_back(QString("第二个"));DrawTypeList.push_back(QString("第三个"));DrawTypeList.push_back(QString("第四个"));DrawTypeList.push_back(QString("第五个"));m_ComboBox->clear();m_ComboBox->addItems(DrawTypeList);

3.QDialog桌面居中显示,this是QDialog类界面创建函数

QDesktopWidget *desktop = QApplication::desktop();QRect deskRect = desktop->availableGeometry();int x = (deskRect.width() - this->width())/2;int y = (deskRect.height() - this->height())/2;this->move(x, y);this->setFixedSize(450, 200);this->setAutoFillBackground(true);this->setWindowModality(Qt::ApplicationModal);

4.QLineEdit显示密码形式

m_LineEditPWD->setEchoMode(QLineEdit::Password);m_LineEditPWD->setStyleSheet("lineedit-password-character: 42");

5.QWidget添加背景图片

QPalette palette; palette.setBrush(this->backgroundRole(),QBrush(QImage(":/images/fmm.png")));this->setPalette(palette);this->setAutoFillBackground(true);//添加登录框的logo.this->setWindowIcon(QIcon(":/images/logo.png"));

6.QLabel设置QSS样式表

QLabel *nameLabel = new QLabel("账  户: ", layoutWidget);nameLabel->setStyleSheet(QString::fromUtf8("QLabel{color:#ffffff}"));

7.让一个对话框总是在所有的窗口的最前面显示

this->setWindowFlags(Qt::WindowStaysOnTopHint);

8.修改QMessageBox按钮的显示的文本,使用addButton函数;

QPushButton * QMessageBox::addButton ( const QString & text, ButtonRole role )

QPushButton * a = mesBox.addButton("A", QMessageBox::YesRole);

0 0