I followed the The Qt Resource System guide and the .ico icons appear on Linux.

The icons are not showing up on Windows when I try to run the applicaton from Qt Creator.

I suspect a plugin issue based on Qt/C++: Icons not showing up when program is run under windows O.S but I failed to figure out what to do from the guide How to Create Qt Plugins.

Is it a plugin issue or why aren't the icons showing up on Windows?

If it is a plugin issue: How do I tell my applicaton where to find the qico.dll?

Details of the environment:

Works on: Kubuntu 12.04 LTS, Qt Creator 2.4.1 and Qt 4.7.4 (64 bit)

Fails on: Windows XP SP2 32 bit, Qt Creator 2.4.1 and Qt 4.7.4 (32 bit)

Everyting is at its default (as installed out of the box), I did not mess with the settings.

resources.qrc

<!DOCTYPE RCC><RCC version="1.0">
    <qresource>
        <file>images/spreadsheet.ico</file>
    </qresource>
</RCC>

Also tried with <qresource prefix="/">.

From the applicaton.pro

RESOURCES += \
    resources.qrc

OTHER_FILES += \
    images/spreadsheet.ico

In the corresponding source file

QIcon(":/images/spreadsheet.ico")

I repeat: it works on Linux.