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M_R
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 Posted: Mon May 09, 2005 8:27 am Post subject: How to get font-name(s) inside a font-file (e.g. .ttf)? |
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How to get font-name(s) inside a font-file (e.g. .ttf)?
I found out, that trying to use a font of an external resource
temporarily (e.g. an own font) I can use something like this:
if( AddFontResourceEx(font_file_name.c_str(), FR_PRIVATE, 0)!=0)
...
but how get I some information about this new font-resource,
especially how do I get the name(s) 'font_name' to assign to
TFont::Name, as
Application->MainForm->Canvas->Font->Name=font_name;
?
Thanks a lot,
Michael
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Gary Setter
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| Posted: Mon May 09, 2005 1:10 pm Post subject: Re: How to get font-name(s) inside a font-file (e.g. .ttf)? |
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<M_R> wrote
| Quote: | How to get font-name(s) inside a font-file (e.g. .ttf)?
I found out, that trying to use a font of an external resource
temporarily (e.g. an own font) I can use something like this:
if( AddFontResourceEx(font_file_name.c_str(), FR_PRIVATE, 0)!=0)
...
but how get I some information about this new font-resource,
especially how do I get the name(s) 'font_name' to assign to
TFont::Name, as
Application->MainForm->Canvas->Font->Name=font_name;
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Hi Michael,
It depends on why you a installing user fonts I suppose. Once the font is
installed, it is available via EnumFontFamilies or ChooseFont. I suppose you
could use EnumFontFamilies before and after installation and check for
differences.
Best regards,
Gary
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Remy Lebeau (TeamB)
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| Posted: Mon May 09, 2005 5:09 pm Post subject: Re: How to get font-name(s) inside a font-file (e.g. .ttf)? |
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<M_R> wrote
| Quote: | How to get font-name(s) inside a font-file (e.g. .ttf)?
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Read the TTF file data directly. You can find details about the TTF file
format at http://www.microsoft.com/typography/otspec/.
Gambit
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M_R
Guest
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| Posted: Wed May 11, 2005 5:17 am Post subject: Re: How to get font-name(s) inside a font-file (e.g. .ttf)? |
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"Gary Setter" <setterg (AT) worldnet (DOT) att.net> schrieb:
| Quote: | It depends on why you a installing user fonts I suppose. Once the font is
installed, it is available via EnumFontFamilies or ChooseFont. I suppose you
could use EnumFontFamilies before and after installation and check for
differences.
|
I tried it out, but did not really succeed:
int CALLBACK _EnumFontFamExProc(ENUMLOGFONTEX *_lpelfe,
NEWTEXTMETRICEX *_lpntme, DWORD _FontType, LPARAM _lParam) {
return(((AnsiString *)_lParam)->AnsiCompareIC((char
*)_lpelfe->elfFullName/*_lpelfe->elfStyle _lpelfe->elfScript*/)==0 ?
0/*stop, font-name has been found*/ : 1/*continue*/);
}
bool DoesFontExist(AnsiString _font_name) {
// does not work for all fonts...
int
enum_ret=EnumFontFamiliesEx(Application->MainForm->Canvas->Handle/*HDC
hdc*/, NULL/*LPCTSTR lpszFamily*/, (FONTENUMPROC)_EnumFontFamExProc,
(long)&_font_name, 0/*dw_flags (not used)*/);
return(enum_ret==0/*callback-function stops caller => font has been
found*/ ? true : false);
}
~~~~~~~~~~~
I changed the strategy a little, since there are application-tools
with which it's easy to find out the font-name within a file, so the
user of my application can (at first) give a not-yet-included
font-filename and behind the font-name.
Strange thing is that after reading these values and including the
font resource from a font-resource-file correctly:
// args[0] contains the font-file, args[1] the font-name
if(!FileExists(args[0]) || AddFontResourceEx(args[0], FR_PRIVATE,
0/*reserved*/)==0)
assert(!"Error accessing resource");
checking for the font-name now being inside the system the
DoesFontExist does not return 'true':
if(!DoesFontExist(args[1]))
assert(!"Font not found");
It's strange since when assigning the fontname to ..->Font->Name this
new font is correctly used.
What am I doing wrong?
Thanks a lot,
Michael
~~~~~~~~~~~
P.S.
( I also tried it with
if(Screen->Fonts->IndexOf(args[1])<0)
assert(!"Font not found");
but the result is the same.
Even checking
Screen->Fonts->Count
before and after calling
AddFontResourceEx(args[0], FR_PRIVATE, 0/*reserved*/)==0)
did not change it's value
)
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Gary Setter
Guest
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| Posted: Thu May 12, 2005 2:46 pm Post subject: Re: How to get font-name(s) inside a font-file (e.g. .ttf)? |
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<snip>
What am I doing wrong?
<snip>
The second parameter of EnumFontFamiliesEx is suppose to be a pointer to a
LOGFONT struct. Passing a null does not seem like a good idea to me. Also,
why not set the lfFaceName member to the font you're looking for?
That might get you started.
Good luck,
Gary
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M_R
Guest
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| Posted: Fri May 13, 2005 10:55 am Post subject: Re: How to get font-name(s) inside a font-file (e.g. .ttf)? |
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| Quote: | The second parameter of EnumFontFamiliesEx is suppose to be a pointer to a
LOGFONT struct. Passing a null does not seem like a good idea to me. Also,
why not set the lfFaceName member to the font you're looking for?
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You are right: I tried it and it works fine now.
Thanks a lot,
Michael
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