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

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);

}