EnumFontsProc

The EnumFontsProc function is an application-defined callback function that processes font data from the EnumFonts function.

int CALLBACK EnumFontsProc(

lplf lplf,	// pointer to logical-font data
lptm lptm,	// pointer to physical-font data
DWORD dwType,	// font type
LPARAM lpData	// pointer to application-defined data
);

Parameters

lplf

Points to a LOGFONT structure that contains information about the logical attributes of the font.

lptm

Points to a TEXTMETRIC structure that contains information about the physical attributes of the font.

dwType

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

DEVICE_FONTTYPE
RASTER_FONTTYPE
TRUETYPE_FONTTYPE

lpData

Points to the application-defined data passed by EnumFonts.

Return Values

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

Remarks

The AND (&) operator can be used with the RASTER_FONTTYPE and DEVICE_FONTTYPE constants to determine the font type. The RASTER_FONTTYPE bit of the FontType parameter specifies whether the font is a raster or vector font. If the bit is one, the font is a raster font; if zero, it is a vector font. The DEVICE_FONTTYPE bit of FontType specifies whether the font is a device-based or graphics device interface (GDI)-based font. If the bit is one, the font is a device-based font; if zero, it is a GDI-based font.

If the device is capable of text transformations (scaling, italicizing, and so on) only the base font is enumerated. The user must inquire into the device's text-transformation abilities to determine which additional fonts are available directly from the device.

An application must register the EnumFontsProc function by passing its address to the EnumFonts function.

EnumFontsProc is a placeholder for the application-defined function name.

See Also

EnumFonts, LOGFONT, TEXTMETRIC

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