Then the application calls EnumFontFamilies again with that typeface name and a different callback function. The EnumProc callback function is called once for each font family (such as Times New Roman). Generally, EnumFontFamilies is called first with a NULL second argument.
The EnumFontFamilies function was designed to better enumerate TrueType fonts under Windows 3.1:ĮnumFontFamilies (hdc, szFaceName, EnumProc, pData) GDI calls the callback function once for each font in the system, passing to it both LOGFONT and TEXTMETRIC structures that defined the font, plus some flags indicating the type of font. The third argument is an enumeration callback function the fourth argument is optional data passed to that function. In the old days of Windows, font enumeration required use of the EnumFonts function:ĮnumFonts (hdc, szTypeFace, EnumProc, pData) Ī program could enumerate all fonts (by setting the second argument to NULL) or just those of a particular typeface. I'll first briefly describe the enumeration functions and then show how to use the ChooseFont function, which fortunately makes font enumeration much less necessary for an application. A program can then select one of these fonts or display them in a dialog box for selection by the user. Font enumeration is the process of obtaining from GDI a list of all fonts available on a device.
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