Ksp reference Manual

Control Parameter Variables
166
KSP Reference Manual

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$CONTROL_PAR_UNIT
Sets the knob unit, similar to 
set_knob_unit()
$CONTROL_PAR_FONT_TYPE
Sets the font type. Numbers 0 to 24 are used to select any of the 25 factory fonts. Combine with 
get_font_id()
to use
custom fonts.
For responsive controls (buttons, switches and menus) the font can also be set separately for each of the control’s states via
the following control parameters:
$CONTROL_PAR_FONT_TYPE_ON
$CONTROL_PAR_FONT_TYPE_OFF_PRESSED
$CONTROL_PAR_FONT_TYPE_ON_PRESSED
$CONTROL_PAR_FONT_TYPE_OFF_HOVER
$CONTROL_PAR_FONT_TYPE_ON_HOVER
Not using any of the five additional state fonts will result in the default (
$CONTROL_PAR_FONT_TYPE
) being used for that
state.
$CONTROL_PAR_DISABLE_TEXT_SHIFTING
Deactivates text position shifting when clicking on buttons and switches
$CONTROL_PAR_TEXTPOS_Y
Shifts the vertical position in pixels of text in buttons, menus, switches and labels
$CONTROL_PAR_TEXT_ALIGNMENT
The text alignment in buttons, menus, switches and labels:
0