TextEdit.FontName
From Xojo Documentation
Property (As String )
aTextEdit.FontName = newStringValue
or
StringValue = aTextEdit.FontName
New in 2019r2
Supported for all project types and targets.
or
StringValue = aTextEdit.FontName
New in 2019r2
Supported for all project types and targets.
Name of the font used to display the text content.
Notes
You can enter any font that is installed on the computer or the names of the two metafonts, "System" and "SmallSystem".
The System font is the font used by the system software as its default font. Different operating systems use different default fonts. If the system software supports both a large and small System font, you can also specify the "SmallSystem" font as your TextFont.
On macOS, "SmallSystem" specifies the OS's smaller system font and may make the control smaller in size as well. On Windows and Linux, "SmallSystem" is the same as "System".
Sample Code
This code sets the FontName property.
Me.FontName = "Helvetica"