EnumFontFamProc info  Overview  Group

The EnumFontFamProc function is an application-defined callback function that retrieves data describing available fonts.

int CALLBACK EnumFontFamProc(

Parameters

lpelf

Points to an ENUMLOGFONT structure that contains information about the logical attributes of the font. This structure is locally defined.

lpntm

Points to a NEWTEXTMETRIC structure that contains information about the physical attributes of the font, if the font is a TrueType font. If the font is not a TrueType font, this parameter points to a TEXTMETRIC structure.

FontType

Specifies the type of the font. This parameter can be a combination of the following values:

DEVICE_FONTTYPE
RASTER_FONTTYPE
TRUETYPE_FONTTYPE

lParam

Points to the application-defined data passed by the EnumFontFamilies function.

Return Values

The return value must be a nonzero value to continue enumeration; to stop enumeration, it must return zero.

Remarks

An application must register this callback function by passing its address to the EnumFontFamilies function.

The EnumFontFamProc function is a placeholder for the application-defined function name.

The AND (&) operator can be used with the RASTER_FONTTYPE, DEVICE_FONTTYPE, and TRUETYPE_FONTTYPE constants to determine the font type. If the RASTER_FONTTYPE bit is set, the font is a raster font. If the TRUETYPE_FONTTYPE bit is set, the font is a TrueType font. If neither bit is set, the font is a vector font. DEVICE_FONTTYPE is set when a device (for example, a laser printer) supports downloading TrueType fonts or when the font is a device-resident font; it is zero if the device is a display adapter, dot-matrix printer, or other raster device. An application can also use DEVICE_FONTTYPE to distinguish graphics device interface (GDI)-supplied raster fonts from device-supplied fonts. GDI can simulate bold, italic, underline, and strikeout attributes for GDI-supplied raster fonts, but not for device-supplied fonts.

See Also

EnumFontFamilies, EnumFontFamProc, EnumFonts, ENUMLOGFONT, NEWTEXTMETRIC, TEXTMETRIC