Microsoft® Windows NT® version 4.0 Service Pack 3 provides corrections for problems reported against earlier versions of Windows NT and introduces new features. The following table describes the new features documented in the Platform SDK for Windows NT 4.0 Service Pack 3.
| Element | Description |
|---|---|
| CryptoAPI 2.0 | Contains the cryptographic functions of CryptoAPI 1.0, plus the functionality to manage and use certificates in secure communications, and to encode and decode PKCS#7 messages. |
| Disk-Space List (Setup API) | The disk-space list enables you to calculate the disk space required to complete the installation operations. |
| IGlobalInterfaceTable | A COM interface that allows one apartment to access an interface implemented on an object in any other apartment in the process. |
| InitializeCriticalSectionAndSpinCount, SetCriticalSectionSpinCount |
Functions that set the spin count for a critical section. |
| SendInput | A function that enables you to synthesize keystrokes, mouse movement, and button clicks. |
| Strings (Setup API) | The Strings section simplifies translation of strings for international markets by placing all strings that can be displayed at the user interface in a single section of the INF file. |
| WH_KEYBOARD_LL | A hook that enables you to monitor keyboard input events about to be posted in a thread input queue. |
| WH_MOUSE_LL | A hook that enables you to monitor mouse input events about to be posted in a thread input queue. |