For any PFATTRS, this message sets the display to use the appropriate font. If NULL, the system font is used. The screen is updated appropriately.

This can cause an overflow, see MLN_OVERFLOW.

When setting an outline font it is necessary to ensure that the FATTRS structure contains the correct maximum baseline extent and average character width for the desired point size and that the font use is marked as FATTR_FONTUSE_TRANSFORMABLE.

Baseline extent and character width are calculated by multiplying the desired point size by the current display device font resolution (CAPS_VERTICAL_FONT_RES and CAPS_HORIZONTAL_FONT_RES; see DevQueryCaps) and dividing by 72, the number of points in an inch.