Question

I have a user control contained in a tabpage. The Form has set AutoScaleMode = AutoScaleMode.Font and the UserControl has set AutoScaleMode.Inherit.

Now when I enlarge the font size of the form then the font is enlarged in the user control too, but the controls contents are not scaled. If I explicitly set AutoScaleMode.Font on the user control then it works properly.

Shouldn’t AutoScaleMode.Inherit work that way?

Answer 1

MSDN has an explicit warning given:

In the .NET Framework versions 1.0 and
1.1, automatic scaling was supported using a simpler mechanism that always
relied on the current system font.
This mechanism is now obsolete but
still supported for backward
compatibility. You can obtain the
older scaling behavior by setting the
AutoScale property of the containing
Form to true, which will also
implicitly set the
ContainerControl.AutoScaleMode
property to None. Conversely, setting
the ContainerControl.AutoScaleMode
property of a form will set AutoScale
to false, enabling the newer scaling
mechanism introduced with the .NET
Framework version 2.0.

so: first question: which framework-version are you using ?

second guess: is your control added after the initializing of the form ?