I previously provided information about the error code 0x0000059B (ERROR_DESTROY_OBJECT_OF_OTHER_THREAD) in response to a different query. Here’s that information again:

Error Code: 0x0000059B (ERROR_DESTROY_OBJECT_OF_OTHER_THREAD)

Description: This error occurs in multithreaded applications when you attempt to destroy an object (such as a window, font, or other resource) that was created by a different thread. Threads in a program should generally manage the objects they create to avoid conflicts and unexpected behavior.

Causes:

• Destroying Object from Wrong Thread: The most common cause is trying to call a function like DestroyWindow or DeleteObject on an object handle that belongs to a different thread. Each thread should typically be responsible for destroying the objects it creates.

• Incorrect Handle Sharing: If you’re attempting to share an object handle between threads, ensure proper synchronization mechanisms (like mutexes) are used to avoid conflicts when accessing or destroying the object.

• Code Errors: Mistakes in how you’re managing object handles and thread communication can lead to this error.

Troubleshooting Steps:

1. Identify Object Thread Origin: Determine the thread that created the object you’re trying to destroy. This might involve examining creation functions or object properties.

2. Destroy from Correct Thread: Ensure the object is destroyed from the same thread that created it. This often involves passing the object handle back to the creator thread or using inter-thread communication mechanisms to signal destruction.

3. Review Threading Model: Carefully analyze how your application uses threads and object ownership. Make sure each thread is responsible for managing the lifetime of the objects it creates.

4. Handle Sharing (if applicable): If you need to share object handles between threads, implement proper synchronization using mutexes or other mechanisms to control access and prevent race conditions when destroying the object.

5. Debug Threading Issues: Use debugging tools to inspect thread behavior and object ownership. This can help identify when threads are attempting to access or destroy objects they shouldn’t.

Additional Tips:

• Use meaningful variable names to differentiate between object handles created by different threads.
• Consider using smart pointers or RAII (Resource Acquisition Is Initialization) techniques (if available in your programming language) to manage object lifecycles and ensure proper destruction within the creating thread.
• Document your threading model and object ownership conventions in your code to improve maintainability and avoid confusion.

By following these steps and understanding the reasons behind the ERROR_DESTROY_OBJECT_OF_OTHER_THREAD error, you should be able to identify the threading issue and fix your code to manage object lifecycles correctly and avoid destroying objects from the wrong thread.