When dealing with Win32 with OpenGL, many developers have the annoying problem of their program remaining in the Task Manager long after the window has been closed. This frequently occurs as a result of unhandled threads, persistent device contexts, or inadequate resource cleanup. In this post, we looked at a number of solutions to this problem, such as utilizing debugging tools, relinquishing OpenGL contexts, and handling messages appropriately. Making sure an application shuts down properly is essential to preventing memory leaks and needless CPU utilization.