The IMN_SETOPENSTATUS message is sent when the open status of the input context is updated. The application receives this notification message through the WM_IME_NOTIFY message.
No return value.
The application can get information about the open status by using the ImmGetOpenStatus function.
Windows NT: Requires version 4.0 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 2.0 or later.
Header: Declared in imm.h.
Input Method Editor Overview, Input Method Editor Messages, ImmGetOpenStatus, WM_IME_NOTIFY