Windows API Guide: DestroyIcon Function

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Public Function EnumFontFamProc (ByVal lpelf As Long, ByVal lpntm As Long, ByVal FontType As Long, ByVal lParam As Long) As Long   ' application-specific code goes here End Function

Description & Usage

The EnumFontFamProc callback function processes each font enumerated by EnumFontFamilies. The function receives a large amount of information describing both the logical font attributes as well as its metrics. Information describing TrueType fonts is received by the function in a slightly different format than non-TrueType font information. This function does not necessarily have to be named EnumFontFamProc -- that is simply the name given to it in discussions about the Windows API.

Return Value

If the function returns 0, EnumFontFamilies immediately stops enumerating fonts. If the function returns a non-zero value, EnumFontFamilies continues enumerating fonts as long as another one can be found.

Visual Basic-Specific Issues

Like all callback functions, EnumFontFamProc must be declared Public and be defined in a module.

Parameters

lpelf

A pointer to an ENUMLOGFONT structure describing the logical attributes of the font.

lpntm

If the font is a TrueType font, this is a pointer to a NEWTEXTMETRIC structure. If the font is not a TrueType font, this is a pointer to a TEXTMETRIC structure. Either structure describes the text metrics of the font.

FontType

A combination of the following flags (although usually only one is used) identifying the type of font:

DEVICE_FONTTYPE

The font is a device font.

RASTER_FONTTYPE

The font is a raster font.

TRUETYPE_FONTTYPE

The font is a TrueType font.

lParam

Additional data specified by EnumFontFamilies.

Constant Definitions

Const DEVICE_FONTTYPE = &H2 Const RASTER_FONTTYPE = &H1 Const TRUETYPE_FONTTYPE = &H4

Used By

EnumFontFamilies

Go back to the Callback Function listing.
Go back to the Reference section index.

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Last Modified: October 29, 1999
This page is copyright © 1999 Paul Kuliniewicz. Copyright Information Revised October 29, 2000
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