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

[detail level 123]

►Nflutter
►Negl
CContext
CManager
CProcTable
CSurface
CWindowSurface
►Ninternal
CReplyManager
►Ntesting
CAccessibilityPluginTest
CCursorHandlerTest
CMockIDirectManipulationViewport
CMockIDirectManipulationContent
CDisplayManagerWin32Test
CFlutterWindowsEngineTest
CMockFlutterWindowsView
CMockWindowsLifecycleManager
CPlatformHandlerTest
CTestTaskRunnerWindow
CTextInputPluginTest
CWindowsLifecycleManagerTest
CAccessibilityBridgeWindows
CAccessibilityPlugin
CDartProjectTest
CDartProject
CFlutterEngine
CFlutterView
CFlutterViewController
CPluginRegistrarWindows
CCompositor
CCompositorOpenGL
CCompositorSoftware
CCursorHandler
CDirectManipulationOwner
CDirectManipulationEventHandler
CDisplayManagerWin32
CEventWatcher
CExternalTexture
CExternalTextureD3d
CExternalTexturePixelBuffer
CFlutterDesktopMessenger
CFlutterPlatformNodeDelegateWindows
CFlutterProjectBundle
CFlutterWindow
CFlutterWindowsEngine
CFlutterWindowsTextureRegistrar
CFlutterWindowsViewSizingDelegate
CFlutterWindowsView
CFlutterWindowsViewController	Controls a view that displays Flutter content
►CHostWindow
CHostWindowInitializationParams
CSavedWindowInfo
CHostWindowDialog
CHostWindowPopup
CHostWindowRegular
CHostWindowSized
CHostWindowTooltip
CKeyboardHandlerBase
CKeyboardKeyChannelHandler
CKeyboardKeyEmbedderHandler
►CKeyboardKeyHandler
CKeyboardKeyHandlerDelegate
►CKeyboardManager
CPendingEvent
CWin32Message
CWindowDelegate
CPlatformHandler
CScopedClipboardInterface
CPlatformViewManager
CPlatformViewPlugin
CSequentialIdGenerator
CSettingsPlugin
CLanguageInfo
CTaskRunner
CTimerThread
►CTaskRunnerWindow
CDelegate
CImmContext
CTextInputManager
CTextInputPlugin
CTextInputPluginModifier
CPhysicalWindowBounds
CPointerLocation
CWindowBindingHandler
CWindowBindingHandlerDelegate
CWindowSizeRequest
CWindowConstraints
CWindowRect
CWindowSize
CRegularWindowCreationRequest
CDialogWindowCreationRequest
CTooltipWindowCreationRequest
CPopupWindowCreationRequest
CWindowsMessage
CWindowingInitRequest
CActualWindowSize
CFullscreenRequest
CWindowManager
CWindowProcDelegateManager
CThreadSnapshot
CWindowsLifecycleManager
►CWindowsProcTable
CWINDOWCOMPOSITIONATTRIBDATA
CAccessibilityBridge
CAlertPlatformNodeDelegate
CBinaryMessengerImpl
CByteBufferStreamReader
CByteBufferStreamWriter
CTestCustomValue
CBasicMessageChannel
CBinaryMessenger
CByteStreamReader
CByteStreamWriter
CCustomEncodableValue
CEncodableValue
CEngineMethodResult
CEventChannel
CEventSink
CStreamHandlerError
CStreamHandler
CStreamHandlerFunctions
CMessageCodec
CMethodCall
CMethodChannel
CMethodCodec
CMethodResult
CMethodResultFunctions
CPluginRegistrar
CPlugin
CPluginRegistrarManager
CPluginRegistry
CStandardCodecSerializer
CStandardMessageCodec
CStandardMethodCodec
CPixelBufferTexture
CGpuSurfaceTexture
CTextureRegistrar
CTextureRegistrarImpl
►CFlutterPlatformNodeDelegate
COwnerBridge
CIncomingMessageDispatcher
CIsolate
CIsolateScope
CJsonMessageCodec
CJsonMethodCodec
CTestAccessibilityBridge
CTextEditingDelta	A change in the state of an input field
CTextInputModel
CTextRange
CFlutterDesktopEngineProperties
CFlutterDesktopGpuSurfaceDescriptor
CFlutterDesktopGpuSurfaceTextureConfig
CFlutterDesktopMessage
CFlutterDesktopPixelBuffer
CFlutterDesktopPixelBufferTextureConfig
CFlutterDesktopPluginRegistrar
CFlutterDesktopTextureInfo
CFlutterDesktopViewControllerProperties
CFlutterPlatformViewCreationParameters
CFlutterPlatformViewTypeEntry