The resource scripts for the Qt DLL's lack a language property. I'm not sure if excluding this is merely a preference or a bug ... I'm not familiar enough with the schema of resource scripts. The consequences of this are: (a) the resource information cannot be seen from Windows Explorer (which suggests to me that it may be a bug, being a malformed resource script) ... see attached screenshot; (b) it causes warnings when deploying the DLL's in conformant installers (such as WiX) because the Windows Installer schema expects a language for every non-font file resource. This is not a fatal warning, but can cause patching and upgrade scenario problems.

This can be amended by identifying the DLL's as language neutral. For example, changing QtGui_resource.rc as follows:

...
BEGIN
	BLOCK "StringFileInfo"
	BEGIN
		BLOCK "040904B0"
		BEGIN
			VALUE "CompanyName", "Nokia Corporation and/or its subsidiary(-ies)\0"
			VALUE "FileDescription", "C++ application development framework.\0"
			VALUE "FileVersion", "4.7.1.0\0"
			VALUE "LegalCopyright", "Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).\0"
			VALUE "OriginalFilename", "QtGui4.dll\0"
			VALUE "ProductName", "Qt4\0"
		END
	END
	BLOCK "VarFileInfo"
	BEGIN
		VALUE "Translation", 0x000, 0000
	END
END
...

With this change, the properties now show up in Windows Explorer and (more importantly) conform to the expected format for Windows Installer (see attached screenshot.)