ImmIsUIMessage
Functional Difference from WIN95
The NULL value of hWndIME is not supported.
Functional Difference from SBCS Open32
'N/A'
Implementation
This API is translated to ImIsIMMessage(HWND, ulMsgid, mpParam1, mpParam2, PBOOL).
Behavior using 16 bit IME
You can use this function as same as 32bit IME.