Detect Input Method Changes

蒋晟

于 2006-09-17 23:49:00 发布

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本文链接：https://blog.youkuaiyun.com/jiangsheng/article/details/1233617

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本文介绍了当用户更改输入面板状态时，操作系统如何通过发送WM_SETTINGCHANGE消息通知活跃应用程序。此外，还讨论了输入语言更改时，输入法管理器(IMM)如何发送WM_INPUTLANGCHANGE消息到应用程序的活动窗口。

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From http://msdn.microsoft.com/library/en-us/wceui/html/_wcesdk_Programming_an_Input_Panel.asp

When the user changes the state of the input panel, the OS sends out a WM_SETTINGCHANGE message to all of the active applications. This wParam parameter of this message is the value SPI_SETSIPINFO in its wParam parameter.

The IMM sends a WM_INPUTLANGCHANGE message to the active window of an application after the input locale has been changed by the user with a key combination (usually ALT+SHIFT), or with the input locale indicator on the taskbar or language bar. The language bar is an on-screen control with which the user can configure a text service.