How to convert QKeyEvent::nativeModifiers() to UINT fsModifiers (for winapi RegisterHotKey)

Question

I have:

QKeyEvent* event; // I pressed "SHIFT"
modifiers = event->nativeModifiers(); // This is 513 value
RegisterHotKey(..., ..., modifiers, ...); // FAILED because 513 is bad modifier. 
//Right code of "SHIFT" is MOD_SHIFT = 0x0004

How to get the right native Windows modifier from QKeyEvent for winapi RegisterHotKey function?

Details:

Qt 5.4; QKeyEvent ; RegisterHotKey

Answer 1

You can do it similarly to how Qxt library converts the modifiers:

modifiers = event->nativeModifiers();

quint32 native = 0;
if (modifiers & Qt::ShiftModifier)
    native |= MOD_SHIFT;
if (modifiers & Qt::ControlModifier)
    native |= MOD_CONTROL;
if (modifiers & Qt::AltModifier)
    native |= MOD_ALT;
if (modifiers & Qt::MetaModifier)
    native |= MOD_WIN;

RegisterHotKey(..., ..., native, ...);