QListView 뷰를 표시하는 동안 QLineEdit에 포커스 설정

Question

Qt에는 자동 완료 기능을 제공하는 QCompleter 클래스가 있습니다. 동일한 것을 끝내기 위해 QListView을 사용하고 싶습니다. 다음 코드에서 QListView이 표시되면 QLineEdit은 포커스를 잃게됩니다. QLineEdit의 초점을 어떻게 유지할 수 있습니까?

1) mdict.h :

#include <QtGui/QWidget> 

class QLineEdit; 
class QListView; 
class QModelIndex; 

class mdict : public QWidget 
{ 
    Q_OBJECT 

public: 
    mdict(QWidget *parent = 0); 
    ~mdict() {} 

private slots: 
    void on_textChanged(const QString &); 
    void completeText(const QModelIndex &); 

private: 
    QLineEdit *mLineEdit; 
    QListView *mView; 
}; 

2) mdict.cpp

#include <cassert> 
#include <QtGui> 
#include "mdict.h" 

mdict::mdict(QWidget *parent) : QWidget(parent), mLineEdit(0), mView(0) 
{ 
    mLineEdit = new QLineEdit(this); 

    QVBoxLayout *layout = new QVBoxLayout(this); 
    layout->addWidget(mLineEdit); 
    layout->addStretch(100); 
    setLayout(layout); 

    QStringList stringList; 
    stringList << "m0" << "m1" << "m2"; 
    QStringListModel *model = new QStringListModel(stringList); 
    mView = new QListView(this); 
    mView->setModel(model); 
    mView->setEditTriggers(QAbstractItemView::NoEditTriggers); 
    mView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); 
    mView->setSelectionBehavior(QAbstractItemView::SelectRows); 
    mView->setSelectionMode(QAbstractItemView::SingleSelection); 
    mView->setParent(0, Qt::Popup); 
    mView->setFocusPolicy(Qt::NoFocus); 
    mView->setFocusProxy(mLineEdit); 

    connect(mLineEdit, SIGNAL(textChanged(const QString&)), 
     this, SLOT(on_textChanged(const QString &))); 
    connect(mView, SIGNAL(activated(const QModelIndex &)), 
     this, SLOT(completeText(const QModelIndex &))); 
    connect(mView, SIGNAL(clicked(const QModelIndex &)), 
     this, SLOT(completeText(const QModelIndex &))); 
} 

void mdict::on_textChanged(const QString &text) 
{ 
    int lineEidtWidth = mLineEdit->width(); 
    mView->setMinimumWidth(lineEidtWidth); 
    mView->setMaximumWidth(lineEidtWidth); 
    mView->setMaximumHeight(60); 

    QPoint p(0, mLineEdit->height()); 
    int x = mLineEdit->mapToGlobal(p).x(); 
    int y = mLineEdit->mapToGlobal(p).y(); 
    mView->move(x, y); 
    mView->show(); 
} 

void mdict::completeText(const QModelIndex &index) 
{ 
    mLineEdit->setText(index.data().toString()); 
    mView->hide(); 
} 

3) MAIN.CPP

#include "mdict.h" 

#include <QtGui> 
#include <QApplication> 

int main(int argc, char *argv[]) 
{ 
    QApplication a(argc, argv); 
    mdict w; 
    w.show(); 
    return a.exec(); 
} 

Answer 1

사용 Qt::ToolTip I

mView->setParent(0, Qt::ToolTip);