I know that the second parameter is the code to be executed, but these codes are just some numbers. How can I match these numbers with specific iocontrol functions? What is the specific matching proce
When I read the introduction of task control block, task control block linked list and task stack, the concepts were blurred. I would like to ask the experts to explain it in detail. What is the relat
I read eight bytes in succession. The first time was correct, the second time was wrong, the third time was correct, and so on repeatedly. What is the reason? Please give me some advice.
Using the webcam.dll from the Internet, it can be recognized in the system (cam2:) but cannot be displayed. There are camtest2 and camtest3 on the Internet that are app interfaces for watching videos,