Loading .qss theme from qrc file - c++

Question

I'm trying to use the qdarkstyle theme.
Ive followed the code but I cant seem to load the stylesheet. Here is how i'm loading the code in main.cpp:
QFile f(":qdarkstyle/style.qss");
if (!f.exists())
{
printf("Unable to set stylesheet, file not found\n");
}
else
{
f.open(QFile::ReadOnly | QFile::Text);
QTextStream ts(&f);
qApp->setStyleSheet(ts.readAll());
}
but exists() is always false. The folder qdarkstyle is in the sub-directory of my main source
My project Resources looks like this:
Ive tried the following calls:
QFile f(":qdarkstyle/style.qss");
QFile f("://qdarkstyle/style.qss");
QFile f(":/qdarkstyle/style/qdarkstyle/style.qss");
but I always exists is always false. Any ideas on what i'm doing wrong
Adding My .pro file
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = MediaManagerV2
TEMPLATE = app
DEFINES += QT_DEPRECATED_WARNINGS
SOURCES += main.cpp\
mainwindow.cpp
HEADERS += mainwindow.h
FORMS += mainwindow.ui
RESOURCES += \
resources.qrc \
qdarkstyle/style.qrc
Link to source
https://drive.google.com/file/d/0BwXCsqWT3wkXV1dYNzF1dFM4dTQ/view?usp=sharing
Fix
Modified code
QApplication a(argc, argv);
MainWindow w;
w.show();
QFile f(":/qdarkstyle/style.qss");
if (!f.exists())
{
printf("Unable to set stylesheet, file not found\n");
}
else
{
f.open(QFile::ReadOnly | QFile::Text);
QTextStream ts(&f);
a.setStyleSheet(ts.readAll());
}
basically moved show() above

Answer 1

You have added the .qrc file to your .pro:
RESOURCES += qdarkstyle/style.qrc
And move show() before calling the stylesheet.