Problem detecting Ctrl Shortcut key

[aguayro]

I have an app with a keyboard Shortcut reader.
It works ok, detect Alt + Key, Shift + Key, etc. but when i try to detect Ctr + Key, Key is not a letter, is a strange character.
Why is this happening?


Here is the code:

void rs_GetKey::keyPressEvent(QKeyEvent *kEvent) {
 
    QStringList keySequence;
 
    if (kEvent->modifiers() & Qt::ControlModifier) {
        keySequence << "Ctrl + ";
    }
    if (kEvent->modifiers() & Qt::AltModifier) {
        keySequence << "Alt + ";
    }
    if (kEvent->modifiers() & Qt::ShiftModifier) {
        keySequence << "Shift + ";
    }
 
    keySequence << kEvent->text();
 
    ui->label->setText(keySequence.join(""));
 
}

void rs_GetKey::keyPressEvent(QKeyEvent *kEvent) {

    QStringList keySequence;

    if (kEvent->modifiers() & Qt::ControlModifier) {
        keySequence << "Ctrl + ";
    }
    if (kEvent->modifiers() & Qt::AltModifier) {
        keySequence << "Alt + ";
    }
    if (kEvent->modifiers() & Qt::ShiftModifier) {
        keySequence << "Shift + ";
    }

    keySequence << kEvent->text();

    ui->label->setText(keySequence.join(""));

}

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[ChrisW67]

Probably because, for example, Ctrl+A is mapped to the text "\x01", Ctrl+B to "\x02" and so on. However, since you don't tell what the actual values are I cannot be sure. If you want to know which key was pressed you should use QKeyEvent::key().

[aguayro]

if i use QKeyEvent::key(), it returns a numeric value (the number corresponding to each character).
Is there any way to convert it to text on the fly, or i have to make my own QMap with a table of value/key?

I'm doing: ui->label->setText( QStrng(kEvent->key() );

It seems to work fine, but while i only press ctrl, it adds a "!" character, if i press only Alt modifier, adds a "#" character... would be possible ignore/remove these "ghost" characters?