Qt ugly font on Hyper-V machine

[Boris L]

I encountered some strange behavior of my Qt application:
It looks OK on a real OS, but text in all widgets looks ugly on virtual Hyper-V machine (Windows 7).
When I enlarged the screenshot, I saw that the text is ether not antialiased at all (QToolbar) or antialiased the strange way (other widgets)

I tried:
@ QFont f = app->font();
f.setStyleStrategy(QFont::PreferAntialias);
app->setFont( f );
@

The font became better looking, but it no longer looked native on all machines (physical and virtual).

And the strangest thing:
@ app->setFont(app->font() );
@

Produces the same effect.

[Boris L]

If I connect to virtual machine using RDP everything is fine.

I guess the problem may be in Hyper-V video driver, but I wonder why it affects only my Qt App and does not affect other programs. Does Qt uses some unique API to draw text?

[echostorm]

how about you also play around with font hinting and see how it affects your app on the virtual Hyper-V machine...