why the font size is different between Qvfb and x86 or arm?

[josentop]

i'm trying to develop the application with Qvfb for ARM platform, but finally, I find the font size become to bigger in ARM platform when it is fitted in Qvfb. who can help me or give some suggestion? thanks.

[MarekR22]

Check QFont API, there is two ways of setting font size. One way is using pixel units, other is using some natural units (device dependent).