private static IntPtr CreateFontObject(Font font, bool antiAliasing)
{
NativeStructs.LOGFONT logFont = new NativeStructs.LOGFONT();
font.ToLogFont(logFont);
int nHeight = logFont.lfHeight;
int nWidth = logFont.lfWidth;
int nEscapement = logFont.lfEscapement;
int nOrientation = logFont.lfOrientation;
int fnWeight = logFont.lfWeight;
uint fdwItalic = logFont.lfItalic;
uint fdwUnderline = logFont.lfUnderline;
uint fdwStrikeOut = logFont.lfStrikeOut;
uint fdwCharSet = logFont.lfCharSet;
uint fdwOutputPrecision = logFont.lfOutPrecision;
uint fdwClipPrecision = logFont.lfClipPrecision;
uint fdwQuality;
if (antiAliasing)
{
fdwQuality = NativeConstants.ANTIALIASED_QUALITY;
}
else
{
fdwQuality = NativeConstants.NONANTIALIASED_QUALITY;
}
uint fdwPitchAndFamily = logFont.lfPitchAndFamily;
string lpszFace = logFont.lfFaceName;
IntPtr hFont = SafeNativeMethods.CreateFontW(
nHeight,
nWidth,
nEscapement,
nOrientation,
fnWeight,
fdwItalic,
fdwUnderline,
fdwStrikeOut,
fdwCharSet,
fdwOutputPrecision,
fdwClipPrecision,
fdwQuality,
fdwPitchAndFamily,
lpszFace);
if (hFont == IntPtr.Zero)
{
NativeMethods.ThrowOnWin32Error("CreateFontW returned NULL");
}
return(hFont);
}
/// <summary>
/// Determines whether a font uses the 'symbol' character set.
/// </summary>
/// <remarks>
/// Symbol fonts do not typically contain glyphs that represent letters of the alphabet.
/// Instead they might contain pictures and symbols. As such, they are not useful for
/// drawing text. Which means you can't use a symbol font to write out its own name for
/// illustrative purposes (like for the font drop-down chooser).
/// </remarks>
public static bool IsSymbolFont(Font font)
{
NativeStructs.LOGFONT logFont = new NativeStructs.LOGFONT();
font.ToLogFont(logFont);
return(logFont.lfCharSet == NativeConstants.SYMBOL_CHARSET);
}
