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

CAddressBookParser
CBlinkLabel
CButtonContainer
CButtons
CCalculation
CCalculator
CClock
CConicalGradientWidget
CContextMenu
CCounter
CCppConnection
CCustomStyle
CCustomWidget
CDocWindow
CDownloader
CDownloaderGui
CDrag
CDrawTextWidget
CDrop
CElidedText
CEllipse
CFileFinder
CGrabWidget
CHelpBrowser
CImageDraw
CImageProvider
CInputDialog
CIntListModel
CJSTools
CKeyFilter
CLinearGradientWidget
CLoadMyForm
CMacButton
CMainWindow
CMDIProgram
CMouseFilter
CMouseObserver
CMultiTouchWidget
CMyApplication
CMyClass
CMyClient
CMyForm
CMyPlugin
CMyProgram
CMyProgressBar
CMyServer
CMyThread
CMyView
CMyWidget
CMyWorker
CNameValidator
COGLDraw
COGLPyramid
COGLQuad
CPainterPathWidget
CPluginsWindow
CPrinter
CProgress
CProgressEvent
CRadialGradientWidget
CResizeObserver
CSDIProgram
CShell
CSimpleDelegate
CSimpleItem
CSoundPlayer
CStartDialog
CStringInterface
CSyntaxHighlighter
CSystemTray
CTableModel
CTest_MyClass
CTest_QLineEdit
CTurtle
CTurtleWorkArea
CUdpClient
CUdpServer
CVideoPlayer
CViewer
CWebBrowser
CWidget
CWidgetDrag
CWidgetMimeData
CWinAPI
CWindow
CWizard