~cpp 
void ToggleKeyMap
{
	HIMC himc;
	himc = ImmGetContext(GetDlgItem(IDC_MYEDIT)->m_hWnd);
	DWORD dwConversion, dwSentence;
	ImmGetConversionStatus(himc, &dwConversion, &dwSentence);
	BOOL bChangedHangulMode = (dwConversion==IME_CMODE_ALPHANUMERIC);
	if( bChangedHangulMode )
		ImmSetConversionStatus(himc, IME_CMODE_NATIVE, dwSentence);
	else
		ImmSetConversionStatus(himc, IME_CMODE_ALPHANUMERIC, dwSentence);
}