GDI/图象编程

开发平台：
Visual C++

GdiPlusFontFamily.h：源码内容
							/**************************************************************************
*
* Copyright (c) 1998-2000, Microsoft Corp.  All Rights Reserved.
*
* Module Name:
*
*   GdiplusFontFamily.h
*
* Abstract:
*
*   Font family API related declarations
*
**************************************************************************/
#ifndef _GDIPLUS_FONT_FAMILY_H
#define _GDIPLUS_FONT_FAMILY_H
inline 
FontFamily::FontFamily() :
    nativeFamily (NULL),
    lastResult    (Ok)
{
}
inline 
FontFamily::FontFamily(
    IN const WCHAR*          name,
    IN const FontCollection* fontCollection
)
{
    nativeFamily = NULL;
    lastResult = DllExports::GdipCreateFontFamilyFromName(
        name,
        fontCollection ? fontCollection->nativeFontCollection : NULL,
        &nativeFamily
    );
    
#ifndef DCR_USE_NEW_135429
    if ((INT) lastResult >= 10)
        lastResult = NotFound;
#endif
}
// private method
inline
FontFamily::FontFamily(
    IN GpFontFamily *nativeOrig,
    IN Status status
)
{
    lastResult    = status;
    nativeFamily = nativeOrig;
}
// Generic font family access
inline const FontFamily *
FontFamily::GenericSansSerif() 
{
    if (GenericSansSerifFontFamily != NULL)
    {
        return GenericSansSerifFontFamily;
    }
    GenericSansSerifFontFamily =
        (FontFamily*) GenericSansSerifFontFamilyBuffer;
    GenericSansSerifFontFamily->lastResult =
        DllExports::GdipGetGenericFontFamilySansSerif(
            &(GenericSansSerifFontFamily->nativeFamily)
        );
#ifndef DCR_USE_NEW_135429
    if ((INT) GenericSansSerifFontFamily->lastResult >= 10)
        GenericSansSerifFontFamily->lastResult = NotFound;
#endif
    return GenericSansSerifFontFamily;
}
inline const FontFamily *
FontFamily::GenericSerif() 
{
    if (GenericSerifFontFamily != NULL)
    {
        return GenericSerifFontFamily;
    }
    GenericSerifFontFamily =
        (FontFamily*) GenericSerifFontFamilyBuffer;
    GenericSerifFontFamily->lastResult =
        DllExports::GdipGetGenericFontFamilySerif(
            &(GenericSerifFontFamily->nativeFamily)
        );
#ifndef DCR_USE_NEW_135429
    if ((INT) GenericSerifFontFamily->lastResult >= 10)
        GenericSerifFontFamily->lastResult = NotFound;
#endif
    return GenericSerifFontFamily;
}
inline const FontFamily *
FontFamily::GenericMonospace()
{
    if (GenericMonospaceFontFamily != NULL)
    {
        return GenericMonospaceFontFamily;
    }
    GenericMonospaceFontFamily =
        (FontFamily*) GenericMonospaceFontFamilyBuffer;
    GenericMonospaceFontFamily->lastResult =
        DllExports::GdipGetGenericFontFamilyMonospace(
            &(GenericMonospaceFontFamily->nativeFamily)
        );
#ifndef DCR_USE_NEW_135429
    if ((INT) GenericMonospaceFontFamily->lastResult >= 10)
        GenericMonospaceFontFamily->lastResult = NotFound;
#endif
    return GenericMonospaceFontFamily;
}
inline FontFamily::~FontFamily()
{
    DllExports::GdipDeleteFontFamily (nativeFamily);
}
inline FontFamily *
FontFamily::Clone() const
{
    GpFontFamily * clonedFamily = NULL;
    SetStatus(DllExports::GdipCloneFontFamily (nativeFamily, &clonedFamily));
    return new FontFamily(clonedFamily, lastResult);
}
inline Status 
FontFamily::GetFamilyName(
    IN WCHAR name[LF_FACESIZE],
    IN LANGID language
) const
{
    return SetStatus(DllExports::GdipGetFamilyName(nativeFamily, 
                                                   name, 
                                                   language));
}
inline BOOL 
FontFamily::IsStyleAvailable(IN INT style) const
{
    BOOL    StyleAvailable;
    Status  status;
    status = SetStatus(DllExports::GdipIsStyleAvailable(nativeFamily, style, &StyleAvailable));
    if (status != Ok)
        StyleAvailable = FALSE;
    return StyleAvailable;
}
inline UINT16 
FontFamily::GetEmHeight(IN INT style) const
{
    UINT16  EmHeight;
    SetStatus(DllExports::GdipGetEmHeight(nativeFamily, style, &EmHeight));
    return EmHeight;
}
inline UINT16 
FontFamily::GetCellAscent(IN INT style) const
{
    UINT16  CellAscent;
    SetStatus(DllExports::GdipGetCellAscent(nativeFamily, style, &CellAscent));
    return CellAscent;
}
inline UINT16 
FontFamily::GetCellDescent(IN INT style) const
{
    UINT16  CellDescent;
    SetStatus(DllExports::GdipGetCellDescent(nativeFamily, style, &CellDescent));
    return CellDescent;
}
inline UINT16 
FontFamily::GetLineSpacing(IN INT style) const
{
    UINT16  LineSpacing;
    SetStatus(DllExports::GdipGetLineSpacing(nativeFamily, style, &LineSpacing));
    return LineSpacing;
}
#ifdef TEXTV2
// The following APIs return data from the font OS/2 table
inline INT16 
FontFamily::GetTypographicAscent(IN INT style) const
{
    INT16  TypographicAscent;
    SetStatus(DllExports::GdipGetTypographicAscent(nativeFamily, style, &TypographicAscent));
    return TypographicAscent;
}
inline INT16 
FontFamily::GetTypographicDescent(IN INT style) const
{
    INT16   TypographicDescent;
    SetStatus(DllExports::GdipGetTypographicDescent(nativeFamily, style, &TypographicDescent));
    return TypographicDescent;
}
inline INT16 
FontFamily::GetTypographicLineGap(IN INT style) const
{
    INT16   TypographicLineGap;
    SetStatus(DllExports::GdipGetTypographicLineGap(nativeFamily, style, &TypographicLineGap));
    return TypographicLineGap;
}
#endif
///////////////////////////////////////////////////////////
// GetLastStatus - return last error code and clear error code
inline Status 
FontFamily::GetLastStatus() const
{
    Status lastStatus = lastResult;
    lastResult = Ok;
    return lastStatus;
}
// protected method
inline Status
FontFamily::SetStatus(Status status) const 
{
    if (status != Ok)
        return (lastResult = status);
    else
        return status;
}
#endif

						