Introduction to messagebox usage

Messagebox is a commonly used dialog box control in Windows operating systems. It is used to display a message to the user and wait for the user's response. Its usage is very simple, just call the MessageBox function and pass in the corresponding parameters. The prototype of the MessageBox function is "int MessageBox(HWND hWnd, LPCTSTR lpText, LPCTSTR lpCaption, UINT uType);".