Qt实现输入框,组合框提示,模糊查询,搜索关键字下拉提示功能

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MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    QWidget *NewWin = new QWidget;
    NewWin->resize(QSize(200,100));
    //使输入框具有初始化提示语句
    QLineEdit *MyEdit = new QLineEdit(NewWin);
    MyEdit->setPlaceholderText("hello world");
    //构建模糊查询对象
    QStringList word_list;
    word_list<<"Java"<<"C++"<<"C#"<<"PHP"<<"Perl"<<"Python"<<"Delphi"<<"Ruby";
    QCompleter *MyInfor = new QCompleter(word_list);
    
    //设置Eidt的模糊查询对象
    MyEdit->setCompleter(MyInfor);
    this->setCentralWidget(NewWin);
    this->resize(QSize(400,500));
}
组合框案例:<基本上市一样的东西,有空多看看帮助文档>
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    QPushButton *NewButton = new QPushButton(this);
    NewButton->setText("hello");
    NewButton->setGeometry(10,10,80,60);
    NewButton->setStyleSheet("border: 3px solid red;border-radius:8px");
   // NewButton->setStyleSheet("QPushButton:hover { color: white },QPushButton:!hover { color: red }");
    QStringList word_list;
    word_list<<"Java"<<"C++"<<"C#"<<"PHP"<<"Perl"<<"Python"<<"Delphi"<<"Ruby";
    QCompleter *NewFind = new QCompleter(word_list);
    ui->comboBox->setEditable(true);
    ui->comboBox->setCompleter(NewFind);
}

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