Index - U
| UCHAR | System.Win32.Types, System.Win32, Graphics.Win32 |
| UINT | System.Win32.Types, System.Win32, Graphics.Win32 |
| UINT32 | System.Win32.Types, System.Win32, Graphics.Win32 |
| UINT64 | System.Win32.Types, System.Win32, Graphics.Win32 |
| UINT_PTR | System.Win32.Types, System.Win32, Graphics.Win32 |
| ULONG | |
| 1 (Type/Class) | System.Win32.Types, System.Win32, Graphics.Win32 |
| 2 (Type/Class) | System.Win32.SimpleMAPI |
| ULONG32 | System.Win32.Types, System.Win32, Graphics.Win32 |
| ULONG64 | System.Win32.Types, System.Win32, Graphics.Win32 |
| uLONGToRc | System.Win32.SimpleMAPI |
| ULONG_PTR | System.Win32.Types, System.Win32, Graphics.Win32 |
| uLW_ALPHA | Graphics.Win32.LayeredWindow, Graphics.Win32 |
| uLW_COLORKEY | Graphics.Win32.LayeredWindow, Graphics.Win32 |
| uLW_OPAQUE | Graphics.Win32.LayeredWindow, Graphics.Win32 |
| uMsg | System.Win32.Automation.Input, System.Win32.Automation, System.Win32 |
| UnknownDebugEvent | System.Win32.DebugApi |
| UnknownException | System.Win32.DebugApi |
| UnloadDll | System.Win32.DebugApi |
| unloadKeyboardLayout | Graphics.Win32.Key, Graphics.Win32 |
| unlockFile | System.Win32.File, System.Win32 |
| unmapViewOfFile | System.Win32.FileMapping, System.Win32 |
| unregisterClass | Graphics.Win32.Window, Graphics.Win32 |
| unregisterHotKey | Graphics.Win32.Window.HotKey |
| Unsupported | System.Win32.Exception.Unsupported |
| unsupportedIfNull | System.Win32.Exception.Unsupported |
| unsupportedVal | System.Win32.Exception.Unsupported |
| updateResource | Graphics.Win32.Resource, Graphics.Win32 |
| updateWindow | Graphics.Win32.Window, Graphics.Win32 |
| upgradeVista | System.Win32.Exception.Unsupported |
| upgradeWindowsOS | System.Win32.Exception.Unsupported |
| useAllRegs | System.Win32.DebugApi |
| USHORT | System.Win32.Types, System.Win32, Graphics.Win32 |