QCompleter with keyboard accents

[Jonas Kvinge]

Hi,

When using a QLineEdit with QCompleter, it is not possible to use keyboard accents while the popup with the suggested text is visisble.
Is there a workaround for this, or is it a Qt bug?

I made a simple program here to demonstrate it: https://github.com/jonaski/completertest
When you enter test, the popup is shown, it is not possible to enter "ALT GR" + ; + a to get 'á', you instead get a regular character 'a'.

I get the same result with both Qt 6.0.3 and Qt 5.15.2. It's on Linux/X11.

Code:

#include <QMainWindow>
#include "mainwindow.h"
#include "completer.h"

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui_(new Ui_MainWindow) {

  ui_->setupUi(this);

  show();
  Completer *completer = new Completer();
  ui_->lineedit->setCompleter(completer);

}

MainWindow::~MainWindow() { delete ui_; }


#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include "ui_mainwindow.h"

class MainWindow : public QMainWindow {
  Q_OBJECT

 public:
  explicit MainWindow(QWidget *parent = nullptr);
  ~MainWindow();

 private:
  Ui_MainWindow *ui_;

};

#endif // MAINWINDOW_H

#include <QCompleter>
#include "completer.h"

Completer::Completer() {
  setModel(new CompleterModel());
  setCaseSensitivity(Qt::CaseInsensitive);
}

Completer::~Completer() {}

CompleterModel::CompleterModel() {
  setStringList(QStringList() << "Test1" << "Test2");
}

CompleterModel::~CompleterModel() {}

#ifndef COMPLETER_H
#define COMPLETER_H

#include <QCompleter>
#include <QStringListModel>

class Completer : public QCompleter {
  Q_OBJECT

 public:
  explicit Completer();
  ~Completer();

 private:

};

class CompleterModel : public QStringListModel {
  Q_OBJECT

 public:
  explicit CompleterModel();
  ~CompleterModel();

 private:

};

#endif // COMPLETER_H

[SGaist]

Hi,

Which distribution are you using ?
Which locale is configured ?

[Jonas Kvinge]

I'm using openSUSE tumbleweed.
The locale is set to "en_US.UTF-8" with English US keyboard.
But I've tested multiple keyboard layouts.
So it works for you?

[FrontierPsycho]

Having the same issue (in fact I reported it to Johan) on Debian unstable with Qt 5.15.2, my locale is set to sv_SE.UTF-8 but I encountered the problem while typing with a greek keyboard layout.