GetThreadContext 函数

The GetThreadContext function retrieves the context of the specified thread.

定义

BOOL GetThreadContext(HANDLE hThread, LPCONTEXT lpContext);

参数

hThread

Handle to the thread whose context is to be retrieved. The handle must have THREAD_GET_CONTEXT access to the thread. For more information, see Thread Security and Access Rights.

WOW64: The handle must also have THREAD_QUERY_INFORMATION access.

lpContext

Pointer to the CONTEXT structure that receives the appropriate context of the specified thread. The value of the ContextFlags member of this structure specifies which portions of a thread's context are retrieved. The CONTEXT structure is highly computer specific. Currently, there are CONTEXT structures defined for Intel, MIPS, Alpha, and PowerPC processors. Refer to the WinNt.h header file for definitions of these structures.

返回值

如果成功，返回值不为零.

如果不成功，返回值为零，若想看其他的错误信息，参考GetLastError

说明

The GetThreadContext function is used to retrieve the context of the specified thread. The function allows a selective context to be retrieved based on the value of the ContextFlags member of the CONTEXT structure. The thread handle identified by the hThread parameter is typically being debugged, but the function can also operate when it is not being debugged.

You cannot get a valid context for a running thread. Use the SuspendThread function to suspend the thread before calling GetThreadContext.

If you call GetThreadContext for the current thread, the function returns successfully; however, the context returned is not valid.

系统要求

Client: Requires Windows XP, Windows 2000 Professional, Windows NT Workstation, Windows Me, Windows 98, or Windows 95.

Server: Requires Windows Server 2003, Windows 2000 Server, or Windows NT Server.

Header: Declared in Winbase.h; include Windows.h.

Library: Link to Kernel32.lib.

DLL: Requires Kernel32.dll.