Preventing key press in a text edit
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Hello,
I have a simple application which host one QPlainTextEdit, I can type into it easily. But when I press a key with additional key modifier (e.g. cmd+m), the key appears in the edit, too.
I other words, if I hit "m", "m" appears. If I hit "cmd+m", "m" appears.
Please, how to prevent the key press if there was present a modifier? I would like "cmd+m" to do nothing unless there is a QAction defined. In other words, "cmd+z" should undo because there is undo defined, "cmd+n" should open new window if the is a QAction with "cmd+n" shortcut. But if there is no such action with shortcut I don't want the key to appear in the edit.
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Thanks, that would probably work. But the thing is, Qt Creator does exhibit the wanted behavior described above and I cannot find how they do it. There is no checking of modifiers for ctrl in "basetexteditor.cpp" so I'm wondering whether there is other way of doing this..?
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Well, definitely I have different basetexteditor.cpp file. For example this line in BaseTextEditorWidget::keyPressEvent (taken from http://qt.gitorious.org ):
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} else if ((e->modifiers() & (Qt::ControlModifier|Qt::AltModifier)) != Qt::ControlModifier){
@seems to block ctrl-modified key events. And there is several other places in this file where 'control' modifier, or key, is checked.