Callback function passed to EnumFontFamiliesExW uses wrong signature

Example callback function used with EnumFontFamiliesExW:

int CALLBACK FontEnumForV2Console(ENUMLOGFONT *pelf, NEWTEXTMETRIC *pntm, int nFontType, LPARAM lParam);

But FONTENUMPROC as expected by EnumFontFamiliesExW is defined as follows (SDK 10.0.18362.0):

typedef int (CALLBACK* OLDFONTENUMPROCW)(CONST LOGFONTW *, CONST TEXTMETRICW *, DWORD, LPARAM);

In practice, the differing argument types are representation-compatible anyway, so it works fine, but it does require a cast on the function pointer. It was suggested in #871 to get this sorted out.

Affected files:

>git grep FONTENUMPROC
src/propsheet/misc.cpp:    EnumFontFamiliesEx(hDC, &LogFont, (FONTENUMPROC)((ShouldAllowAllMonoTTFonts()) ? FontEnumForV2Console : FontEnum), (LPARAM)&fed, 0);
src/renderer/gdi/tool/main.cpp:    EnumFontFamiliesExW( hDC, &lf, (FONTENUMPROC)EnumFontFamiliesExProc, 0, 0 );
src/tools/fontlist/main.cpp:    EnumFontFamiliesExW(hdc.get(), &LogFont, (FONTENUMPROC)FontEnumForV2Console, (LPARAM)hdc.get(), 0);

BTW, src/renderer/gdi/tool/main.cpp is not included in any project in the solution, preventing it to be scanned by an IDE. Is that intentional?

Start with the three files listed by git grep FONTENUMPROC, then compare FontEnumForV2Console, FontEnum, and EnumFontFamiliesExProc with the SDK FONTENUMPROC declaration. Done means the callbacks no longer require incompatible casts and the reason src/renderer/gdi/tool/main.cpp is absent from the solution is established or addressed.