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Text output to ClearWin windows

Textual window input/output uses, by default, a Windows font called SYSTEM_FIXED_FONT output in black. You are not limited to the use of this font; Windows can write text in a wide variety of fonts and colours. You simply use appropriate Windows API routines to create one or more fonts and then attach them to a window.

In order to create a new font, it is usually best to start with the parameters defining the system font and modify them to obtain what you require.

For example:

    WINAPP
    INCLUDE <windows.ins>
    INTEGER lfheight,lfwidth,lfescapement,
   +  lforientation,lfweight,lfitalic,lfunderline,
   +  lfstrikeout,lfcharset,lfoutprecision,
   +  lfclipprecision,lfquality,lfpitchandfamily
    CHARACTER*80 lffacename
    INTEGER newfont
    CALL get_system_font@(lfheight,lfwidth,lfescapement,
   +  lforientation,lfweight,lfitalic,lfunderline,
   +  lfstrikeout,lfcharset,lfoutprecision,
   +  lfclipprecision,lfquality,lfpitchandfamily,lffacename)
c--- Alter the default parameters to double the size
c--- and specify italic.
     lfheight=2*lfheight
     lfwidth =2*lfwidth
     lfitalic=1
c--- CreateFont is a Windows API function...
     newfont=CreateFont(lfheight,lfwidth,lfescapement,
    +  lforientation,lfweight,lfitalic,lfunderline,
    +  lfstrikeout,lfcharset,lfoutprecision,
    +  lfclipprecision,lfquality,lfpitchandfamily,lffacename)

     CALL set_default_font@(newfont)
     ...

The default font used by a ClearWin window (SYSTEM_FIXED_FONT) can be changed by a call to either set_default_proportional_font@ or to set_default_font@. These routines will alter the default font used by ClearWin+ on all ClearWin windows created subsequent to the call. The original default can be restored by a call to set_default_to_fixed_font@.

 

 

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