Function HideCaret

* \fn BOOL GUIAPI HideCaret (HWND hWnd) * \brief Hides a caret. * * This function removes the caret from the screen and close the IME window. * Hiding a caret does not destroy its current shape or invalidate the * insertion point. * * \param hWnd The owner of the caret. * * \return TRUE on success, otherwise FALSE. * * \sa ShowCaret */