GDI Plus FontFamily Foundation Class

Article
07/09/2007

The gpFontFamily class designates attributes shared by a group of related fonts.

Category	Reporting
Default Catalog	Visual FoxPro Catalog\Foundation Classes\Output\GDIplus
Class	gpFontFamily
Base Class	Custom
Class Library	_GDIPLUS.vcx
Parent Class	gpObject (GDI Plus Object Foundation Class)

Remarks

The following table lists public properties and methods added by this class to its parent class, gpObject. It also implements the Clone and Init methods.

Values listed as em height in the table are equivalent to cell ascent (height of the font above the line) + cell descent (height of the font below the line) - internal leading of the font. Values listed as line spacing are equal to cell ascent + cell descent + external leading.

Properties and methods	Description
Clone Method	Clones a font family object. Syntax: `? THIS.Clone(toFontFamily)` Return Values: Logical, representing success or failure. Parameters: toFontFamily, required, the gpFontFamily object to clone.
Create Method	Creates a font family object from a specified name. Syntax: `? THIS.Create(tcName)` Return Values: Logical, representing success or failure. Parameters: tcName, required, the name of the font family.
FontName Property	Font family name, such as "Arial." Default: Empty.
gdipFontCollectionHandle Property	Handle to GDI+ FontCollection object. Default:`0`. Remarks: This class does not manage this handle at all, it merely uses it.
GetCellAscent Method	Provides cell ascent in design units of this font family in the specified style. Syntax: `nAscent =THIS.GetCellAscent([tnStyle])` Return Values: Number. Returns null (`.NULL.`) on failure. Parameters: tnStyle, optional, font style as specified in GDIPLUS_FontStyle_* constants. Default value is `GDIPLUS_FontStyle_Regular`.
GetCellDescent Method	Provides cell descent in design units of this font family in the specified style. Syntax: `nDescent =THIS.GetCellDescent([tnStyle])` Return Values: Number. Returns null (`.NULL.`) on failure. Parameters: tnStyle, optional, font style as specified in GDIPLUS_FontStyle_* constants. Default value is `GDIPLUS_FontStyle_Regular`.
GetEmHeight Method	Provides em height in design units of this font family in the specified style. Syntax: `nHeight =THIS.GetEmHeight([tnStyle])` Return Values: Number. Returns null (`.NULL.`) on failure. Parameters: tnStyle, optional, font style as specified in GDIPLUS_FontStyle_* constants. Default value is `GDIPLUS_FontStyle_Regular`.
GetGenericMonospace Method	Provides a generic monospace font family object. Syntax: `THIS.GetGenericMonospace()` Return Values: Logical, representing success or failure. Parameters: None. Remarks: Upon successful return from this method, the object represents a system standard font family, and all properties become read-only.
GetGenericSansSerif Method	Provides a generic sans serif font family object. Syntax: `THIS.GetGenericSansSerif()` Return Values: Logical, representing success or failure. Parameters: None. Remarks: Upon successful return from this method, the object represents a system standard font family, and all properties become read-only.
GetGenericSerif Method	Provides a generic serif font family object. Syntax: `THIS.GetGenericSerif()` Return Values: Logical, representing success or failure. Parameters: None. Remarks: Upon successful return from this method, the object represents a system standard font family, and all properties become read-only.
GetLineSpacing Method	Provides line spacing in design units of this font family in the specified style. Syntax: `nHeight =THIS.GetEmHeight([tnStyle])` Return Values: Number. Returns null (`.NULL.`) on failure. Parameters: tnStyle, optional, font style as specified in GDIPLUS_FontStyle_* constants. Default value is `GDIPLUS_FontStyle_Regular`.
GetName Method	Provides the name of this font family in the specified language. Syntax: `cName =THIS.GetName([tnLanguageID])` Return Values: String. Returns null (`.NULL.`) on failure. Parameters: tnLanguage, optional, Language Identifier. Default value is `0`.
Init Method	Constructs a font family object during initialization if passed appropriate arguments. Syntax: `CREATEOBJECT("gpFontFamily",tcFontFamilyName)` Return Values: Logical, representing success or failure. If the method fails, the object does not instantiate. Parameters: tcFontFamilyName, required if immediate creation of the object is requested. A string representing the name of a font family.
IsStyleAvailable Method	Tests whether a requested font style can be natively provided in this font family. Syntax: `? THIS.IsStyleAvailable(tnStyle)` Return Values: Logical. Parameters: tnStyle, required, font style as specified in GDIPLUS_FontStyle_* constants. Default value is `GDIPLUS_FontStyle_Regular`. Remarks: Although technically correct, a False (`.F.`) return value from this function can be misleading. Windows can usually synthesize font styles when the specific style for a font is not available.

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GDI Plus FontFamily Foundation Class

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