glamis,
виндовый

WAIT [cMessageText] [TO VarName] [WINDOW [AT nRow, nColumn]] [NOWAIT] [CLEAR | NOCLEAR] [TIMEOUT nSeconds]

использовать можно WINDOW. Там есть опция FONT

DEFINE WINDOW WindowName1 FROM nRow1, nColumn1 TO nRow2, nColumn2 | AT nRow3, nColumn3 SIZE nRow4, nColumn4 [IN [WINDOW] WindowName2 | IN SCREEN | IN DESKTOP [NAME ObjectName] [FONT cFontName [, nFontSize [, nFontCharSet]]] [STYLE cFontStyle] [FOOTER cFooterText] [TITLE cTitleText] [HALFHEIGHT] [DOUBLE | PANEL | NONE | SYSTEM | cBorderString] [CLOSE | NOCLOSE] [FLOAT | NOFLOAT] [GROW | NOGROW] [MDI | NOMDI] [MINIMIZE | NOMINIMIZE] [ZOOM | NOZOOM] [ICON FILE FileName1] [FILL cFillCharacter | FILL FILE FileName2] [COLOR SCHEME nSchemeNumber | COLOR ColorPairList]]