Compiling NPP - what version of Qt source code do I need?

[古旮]

I have downloaded NPP’s source code, and I see #include <QApplication> in scintilla\qt\ScintillaEditBase\PlatQt.cpp. But there isn’t a QApplication header file in the source code package. So I think I have to download it if I want to compile it? If so, what version of Qt source code do I need?
The size of source code of different versions of Qt is varying so much.

[dail]

Scintilla supports multiple platforms…one of them being Qt. However Notepad++ uses the native Win32 platform. So you don’t need Qt at all.