Using a Multiple Document Interface

Applications that use a multiple document interface (MDI) might need to specify window styles that are not available through the MCIWndCreate_T_JCT function. For these applications, you can register and create an MCIWnd window by using the MCIWndRegisterClass9FV5A_ function with the CreateWindowExRPK.PC function. The MCIWndRegisterClass function registers the MCIWND_WINDOW_CLASS window class and then CreateWindowEx creates an instance of an MCIWnd window.