imm32: Add stub and header of ImmRequestMessage.
diff --git a/include/ddk/imm.h b/include/ddk/imm.h
index ee10b27..4c3ec45 100644
--- a/include/ddk/imm.h
+++ b/include/ddk/imm.h
@@ -141,6 +141,9 @@
 #define NI_IMEMENUSELECTED              0x0018
 
 BOOL WINAPI ImmGenerateMessage(HIMC);
+LRESULT WINAPI ImmRequestMessageA(HIMC, WPARAM, LPARAM);
+LRESULT WINAPI ImmRequestMessageW(HIMC, WPARAM, LPARAM);
+#define ImmRequestMessage WINELIB_NAME_AW(ImmRequestMessage);
 
 BOOL WINAPI ImeInquire(LPIMEINFO, LPWSTR, LPCWSTR lpszOptions);
 BOOL WINAPI ImeConfigure (HKL, HWND, DWORD, LPVOID);