Windows 8 SpellChecking API

在Windows 8下，多了一套很有趣的API，SpellChecking，这套API的作用也是一目了然，是做拼写检查的。这么有趣的一套API怎么能不写个程序玩玩呢，于是我写了个小程序，看了看对英文拼写检查的效果，如图。

拼写检查会给出三个结果，分别是删除，替换和建议，根据不同的结果我们可以调用不同的接口来获得最佳的体验。代码如下：

// SpellCheck.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <atlbase.h>
#include <atlstr.h>
#include <Spellcheck.h>
class CCoInitialize {
public:
    CCoInitialize() {
        CoInitializeEx(NULL, COINIT_MULTITHREADED);
    }
    ~CCoInitialize() { CoUninitialize(); }
};

LPCWSTR kActionStrings[] = {
    L"CORRECTIVE_ACTION_NONE",
    L"CORRECTIVE_ACTION_GET_SUGGESTIONS",
    L"CORRECTIVE_ACTION_REPLACE",
    L"CORRECTIVE_ACTION_DELETE"
};

int _tmain(int argc, _TCHAR* argv[])
{
    CCoInitialize com_init;
    CComPtr spell_checker_factory;
    HRESULT hr = CoCreateInstance(__uuidof(SpellCheckerFactory), NULL, CLSCTX_INPROC_SERVER, __uuidof(spell_checker_factory),
        reinterpret_cast(&spell;_checker_factory));
    if (FAILED(hr)) {
        return 1;
    }

    LPCWSTR lang_tag = L"en-US";
    BOOL suppored = FALSE;
    spell_checker_factory->IsSupported(lang_tag, &suppored;);
    if (!suppored) {
        return 1;
    }

    CComPtr spell_checker;
    hr = spell_checker_factory->CreateSpellChecker(lang_tag, &spell;_checker);
    if (FAILED(hr)) {
        return 1;
    }

    WCHAR my_text[] = L"Helloo world, I am am new heere, hvae fun";
    wprintf(L"%s\n\n", my_text);
    CComPtr spell_errors;
    hr = spell_checker->Check(my_text, &spell;_errors);
    if (FAILED(hr)) {
        return 1;
    }

    CComPtr spell_error;
    while (spell_errors->Next(&spell;_error) == S_OK) {
        ULONG index, length;
        if (SUCCEEDED(spell_error->get_StartIndex(&index;)) && SUCCEEDED(spell_error->get_Length(&length;))) {
            CStringW tmp_str(my_text + index, length);
            wprintf(L"%-10s    ", tmp_str.GetString());

            CORRECTIVE_ACTION action;
            if (SUCCEEDED(spell_error->get_CorrectiveAction(&action;))) {
                wprintf(L"%-40s    ", kActionStrings[action]);
            }

            if (action == CORRECTIVE_ACTION_DELETE) {
                wprintf(L"delete %s\n", tmp_str.GetString());
            }
            else if (action == CORRECTIVE_ACTION_GET_SUGGESTIONS) {
                CComPtr spell_suggestions;
                hr = spell_checker->Suggest(tmp_str.GetString(), &spell;_suggestions);
                if (FAILED(hr)) {
                    break;;
                }

                WCHAR *suggestion_str;
                while (spell_suggestions->Next(1, &suggestion;_str, NULL) == S_OK) {
                    wprintf(L"%s ", suggestion_str);
                    CoTaskMemFree(suggestion_str);
                }
                wprintf(L"\n");
            }
            else if (action == CORRECTIVE_ACTION_REPLACE) {
                WCHAR *replace_str;
                hr = spell_error->get_Replacement(&replace;_str);
                wprintf(L"%s\n", replace_str);
                CoTaskMemFree(replace_str);
            }
        }

        spell_error.Release();
    }

    return 0;
}