Provides functions for interacting with the Windows operating system core.
| Function | Header | Synopsis |
|---|---|---|
GetSystemInfo | windows.h | Retrieves information about the current system. |
SetSystemPowerState | winuser.h | Sets the system power state (sleep, hibernate). |
GetVersionEx | winnt.h | Gets the operating system version. |
Functions for allocating, managing, and freeing memory in a process.
| Function | Header | Synopsis |
|---|---|---|
VirtualAlloc | memoryapi.h | Reserves or commits a region of pages in the virtual address space. |
VirtualFree | memoryapi.h | Releases or decommits a region of pages. |
HeapCreate | heapapi.h | Creates a private heap object. |
HeapAlloc | heapapi.h | Allocates a memory block from a heap. |
APIs to coordinate execution across threads and processes.
| Function | Header | Synopsis |
|---|---|---|
CreateMutex | synchapi.h | Creates or opens a mutex object. |
WaitForSingleObject | synchapi.h | Waits until the specified object is in the signaled state. |
InitializeCriticalSection | synchapi.h | Initializes a critical section object. |
ReleaseSemaphore | synchapi.h | Releases a semaphore object. |
Functions dealing with access control, authentication, and encryption.
| Function | Header | Synopsis |
|---|---|---|
OpenProcessToken | securitybaseapi.h | Opens the access token associated with a process. |
GetTokenInformation | securitybaseapi.h | Retrieves information about an access token. |
CryptAcquireContext | wincrypt.h | Acquires a handle to a cryptographic service provider (CSP). |
EncryptMessage | sspi.h | Encrypts a message using a security context. |
APIs for creating, reading, updating, and deleting registry keys and values.
| Function | Header | Synopsis |
|---|---|---|
RegOpenKeyEx | winreg.h | Opens an existing registry key. |
RegSetValueEx | winreg.h | Sets the data and type of a value under a registry key. |
RegQueryValueEx | winreg.h | Retrieves the type and data for a value. |
RegDeleteKey | winreg.h | Deletes a subkey and its values. |