Japanese Edit Control (Windows CE 5.0)
Windows CE supports Japanese Edit Control functionality to allow you to configure editing functionality for an Input Method Editor (IME). Unlike previous versions of the OS, where the default level was set to level 3, the default level of the Japanese Edit Control in Windows CE and later is set to level 2. OEMs can change the Japanese Edit Control level by setting a registry key.
The Japanese edit control determines the mode (level 2 or level 3) of operation loaded in the registry at the time of IME creation. The level 2 mode of the Japanese edit control in Windows CE and later displays the same behavior as the default edit control mode implemented in Microsoft® Windows® 98 and Microsoft® Windows® 2000. Microsoft® Windows® CE 3.0 or earlier implements level 3 of the Japanese edit control mode. Both levels operate correctly on a Windows CE–based device.
The following table provides a comparison between level 2 and level 3.
| Functionality | Level 2 | Level 3 |
|---|---|---|
| Composition string | The IME draws the composition string. | The Edit Control draws the composition string. |
| Redraws | There are few redraws. | There are many redraws. |
| Speed | Speed remains fast as the number of characters increases. | Speed decreases as the number of characters increases. |
| Character sequence display | A character sequence is hidden behind the composition string.
Users can specify the colors of the composition string through an IME setting. |
The entire character sequence is displayed beside the composition string. |
| Application programming interface (API) | Uses the same operation as the Edit Control in Microsoft® Windows® 2000. | The Edit Control differs between Windows CE and 32-bit Microsoft operating systems. |
| Multiple character input | When a user enters ten characters in an IME that can display only five characters, all composition strings are visible. | When a user enters ten characters in an IME that can display only five characters, no composition strings are visible. |
See Also
Working with the Input Method Editor | Changing the Edit Control Level
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