InputMethodEx is implemented by the IM component. The input panel calls the InputMethodEx interfaces to notify the IM of state changes and to request action and information from the IM. Because an IM is a COM interface, it is up to the developer to implement the following methods. The following table describes the IInputMethodEx methods.
IInputMethodEx method |
Description |
| Select | Creates the windows and image list for the IM |
| Deselect | Select the IM out of the input panel window and destroys the IM windows. |
| Showing | Performs any initialization before the input panel window is displayed. |
| Hiding | Performs any saving routines before the input panel is hidden. |
| GetInfo | Returns information about the current IM to the operating system. |
| ReceiveSipInfo | Receives information about the size, placement, and docked status of the input panel. |
| RegisterCallback | Receives a pointer to an IIMCallback interface. An IM uses the IIMCallback interface to send keystrokes to applications and to change the icons on the Input Panel button. |
| GetImData | Sends data from the current IM to the current application. |
| SetImData | Responds to an application’s request to set IM-specific data within the IM. |
| UserOptionsDlg | Presents the user options dialog for a specific IM. |
| SetIMMActiveContext | Called whenever ImmSetActiveContext is called. The information received indentifies the current state of the IME. |
| RegisterCallbackEx | Receives a pointer to an IIMCallbeckEx interface. An IM uses the IIMCallbackEx interface to send keystrokes to applications and to change the icons on the Input Panel button. |
Note Except for SetIMMActiveContext and RegisterCallbackEx, all the InputMethodEx methods are identical to the InputMethod methods.