Sets the IME composition color. This message is available only in Asian-language versions of the operating system.
EM_SETIMECOLOR
wParam = (WPARAM) 0;
lParam = (LPARAM) (COMPCOLOR *) aCompColor;
Returns nonzero if successful, zero otherwise.
Windows NT: Requires version 3.51 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in richedit.h.
Rich Edit Controls Overview, Rich Edit Messages, EM_GETIMECOLOR, COMPCOLOR