C++ CreateThread Parameters Explained

1 year ago
Sophia Anderson
1 minute

The parameters of the CreateThread function in C++ are as follows:

  1. lpThreadAttributes: A pointer to a SECURITY_ATTRIBUTES structure that specifies the security descriptor for the thread object. If NULL is passed, the thread object defaults to a non-inheritable handle.
  2. dwStackSize: An integer value that specifies the size of the stack for the new thread. If 0 is passed, the stack size of the new thread will be the same as the default stack size of the creating thread.
  3. lpStartAddress: a pointer to the thread function where the new thread will begin execution.
  4. lpParameter: a pointer to the parameter passed to the thread function.
  5. dwCreationFlags: an integer value specifying the flags for thread creation. Commonly used flags include:
  1. CREATE_SUSPENDED: Pause the execution of the thread when creating it.
  2. Specifying `dwStackSize` as a reservation for the stack size, rather than an explicit stack size.
  3. 0: Default flag, indicating that the thread will be executed immediately after creation.
  1. lpThreadId: a pointer to a variable that receives the identifier of the new thread.

It is important to note that the CreateThread function returns a handle to a new thread, and if the function call fails, it returns NULL.

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