KeyPressEvent don't work with ibus?

  • Here is my code:
    #include <QApplication>
    #include <QTextEdit>
    #include <QKeyEvent>

    class TextEdit : public QTextEdit {
    void keyPressEvent(QKeyEvent *e) {
    qDebug("pressed key %d", e->key());
    void keyReleaseEvent(QKeyEvent *e) {
    qDebug("released key %d", e->key());

    int main(int argc, char *argv[]) {
    QApplication a(argc, argv);
    TextEdit e;;
    return a.exec();

    The problem is, all text input are not captured by keyPressEvent when any ibus input method is on.
    I tested with ibus-pinyin and ibus-mozc and the only config it works is in mozc's direct input mode (not Latin mode, which buffers inputs inline and require a return to submit). ibus-pinyin's English mode also doesn't work.

    But it's strange that ASCII inputs in both ibus-pinyin's English mode and ibus-mozc's Latin mode are captured by keyReleaseEvent.

    -Is there any way to filter user input regardless of languages and input methods? How is Qt Creator's fakevim mode implemented?-

    My environment is GNOME 3.6.3 in Gentoo, with Qt 4.8.5 in Gentoo repo and Qt 5.1.1 downloaded from this site.

    Edit: I've found inputMethodEvent so the question is solved but it's still strange for text not captured in keyPressEvent being captured in keyReleaseEvent.

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