This method is implemented to return information about the current input method (IM) to the operating system.
The system calls this method for information about the IM. This includes flags indicating special properties of the IM, which are stored in an IMINFO structure. This structure contains the handles of the two image lists containing the masked bitmaps that are displayed on the Input Panel button, the indexes into the specified image lists, and a rectangle indicating the preferred size and placement of the IM.
On Windows Embedded CE, the SipGetInfo function operates in a similar manner as this method; however, SipGetInfo is called by an application, and it returns information regarding the software-based input panel.