On Windows, behavior of Alt + keypad numbers depend on NumLock state

On Windows, the behavior of Alt + keypad numbers depends on the NumLock state. If NumLock is on, Alt+6+5 produces a capital 'A'. If NumLock is off, Alt+6+5 produces a space.

In a native Windows application like "write", Alt+6+5 produces a capital 'A' regardless of the NumLock state. The expected result is that Alt+6+5 produces a capital 'A' in Qt as well.

This is a regression from Qt 4.1.