Here are the classes, structs, unions and interfaces with brief descriptions:

NPango
CAnalysis	A Pango::Analysis stores information about the properties of a segment of text
CAttrColor	A Pango::AttrColor is used to represent an attribute which is a color
CAttrFloat	A Pango::AttrFloat is used to represent an attribute with a float or double value
CAttrFontDesc	A Pango::AttrFontDesc is used to represent an attribute that sets all aspects of the font description at once
CAttribute	The Pango::Attribute structure represents the common portions of all attributes
CAttributeTraits
CAttrInt	A Pango::AttrInt is used to represent an attribute with an integer or enumeration value
CAttrIter	A Pango::AttrIter is used to represent an iterator through a Pango::AttrList
CAttrLanguage	A Pango::AttrLanguage is used to represent an attribute that is a language
CAttrList	A Pango::AttrList represents a list of attributes that apply to a section of text
CAttrShape	A Pango::AttrShape structure is used to represent an attribute which imposes shape restrictions
CAttrString	A Pango::AttrString is used to represent an attribute with a string value
CCairoFontMap	A Pango::CairoFontMap represents the set of fonts available for a particular rendering system
CColor	A Pango::Color is used to represent a color in an uncalibrated RGB colorspace
CContext	A Pango::Context stores global information used to control the itemization process
CCoverage	A Pango::Coverage represents a map from ISO-10646 character point to Pango::CoverageLevel
CFont	A Pango::Font is used to represent a font in a rendering-system-independent matter
CFontDescription	A Pango::FontDescription represents the description of an ideal font
CFontFace	A Pango::FontFace is used to represent a group of fonts with the same family, slant, weight, width, but varying sizes
CFontFamily	A Pango::FontFamily is used to represent a family of related font faces
CFontMap	A Pango::FontMap represents the set of fonts available for a particular rendering system
CFontMetrics	A Pango::FontMetrics holds the overall metric information for a font (possibly restricted to a script)
CFontset	A Pango::Fontset is used to represent a set of fonts
CGlyphGeometry	A Pango::GlyphGeometry contains width and positioning information for a single glyph
CGlyphInfo	A Pango::GlyphInfo represents a single glyph together with positioning information and visual attributes
CGlyphString	A Pango::GlyphString is used to store strings of glyphs with geometry and visual attribute information
CItem	A Pango::Item stores information about a segment of text
CItemTraits
CLanguage	A Pango::Language is used to represent a language
CLayout	A Pango::Layout represents an entire paragraph of text
CLayoutIter	A Pango::LayoutIter can be used to iterate over the visual extents of a Pango::Layout
CLayoutLine	A Pango::LayoutLine represents one of the lines resulting from laying out a paragraph via Pango::Layout
CLayoutLineTraits
CLayoutRun	A Pango::LayoutRun represents a single run within a LayoutLine
CRectangle	A Pango::Rectangle represents a rectangle
CRenderer	Pango::Renderer is a base class that contains the necessary logic for rendering a Pango::Layout or Pango::LayoutLine
CTabArray	A Pango::TabArray contains an array of tab stops
Clu_counter_policy_base