TSF(Text Service Framework)中如何禁止输入法

Question

我使用win32 api创建了一个很简单的窗口。窗口展示后将输入法切换至中文并敲击键盘字母，此时屏幕左上角会出现IME的选词窗口（如下所示：）

在上图这种情况里，我想通过代码动态地禁用（或启用）输入法。当禁用之后，即使切换为中文输入法，敲击字母按键也不出现选词框，当启用输入法之后，一切照旧。

为了达到目的，我查阅了一些资料，发现imm32的api能达到这一效果

::ImmAssociateContextEx(m_hWnd, NULL, 0);

假如我不想调用imm32，而是使用tsf，那么该如何实现禁止输入法呢？

我参考了chromium的代码，尝试着在代码中使用了以下方法禁用输入法，结果并没有效果：

HRESULT TSFBridgeImpl::InitializeDisabledContext(ITfContext* context) {
  Microsoft::WRL::ComPtr<ITfCompartmentMgr> compartment_mgr;
  HRESULT hr = context->QueryInterface(IID_PPV_ARGS(&compartment_mgr));
  if (FAILED(hr)) {
    return hr;
  }

  Microsoft::WRL::ComPtr<ITfCompartment> disabled_compartment;
  hr = compartment_mgr->GetCompartment(GUID_COMPARTMENT_KEYBOARD_DISABLED,
                                       &disabled_compartment);
  if (FAILED(hr)) {
    return hr;
  }

  base::win::ScopedVariant variant;
  variant.Set(1);
  hr = disabled_compartment->SetValue(client_id_, variant.ptr());
  if (FAILED(hr)) {
    return hr;
  }

  Microsoft::WRL::ComPtr<ITfCompartment> empty_context;
  hr = compartment_mgr->GetCompartment(GUID_COMPARTMENT_EMPTYCONTEXT,
                                       &empty_context);
  if (FAILED(hr)) {
    return hr;
  }
  base::win::ScopedVariant empty_context_variant;
  empty_context_variant.Set(static_cast<int32_t>(1));
  hr = empty_context->SetValue(client_id_, empty_context_variant.ptr());
  if (FAILED(hr)) {
    return hr;
  }

  return S_OK;
}

所以想请教一下，我的TSF禁用输入法的思路是否正确，如果正确，问题出在哪里？如果不正确，又该如何实现？

Answer 1

您好 @YU Coat，

我也不能让ITfCompartment禁止输入法。我觉得TSF(Text Service Framework)是有能力做到这一点的，或许你可以参考一下这个程序https://github.com/ryancheung/ImeSharp.

{
    CoInitialize(NULL);
    // An identifier of TSF client.
    TfClientId client_id_ = TF_CLIENTID_NULL;
    HRESULT hr;
    ITfThreadMgr* thread_manager_;
    hr = CoCreateInstance(CLSID_TF_ThreadMgr,
        NULL,
        CLSCTX_ALL,
        IID_ITfThreadMgr,
        (void**)&thread_manager_);
    if (FAILED(thread_manager_->Activate(&client_id_))) {
        return 1;
    }
    ITfDocumentMgr* document_manager;
    if (FAILED(thread_manager_->CreateDocumentMgr(&document_manager))) {
        return false;
    }
    DWORD edit_cookie = TF_INVALID_EDIT_COOKIE;
    ITfContext* context;
    if (FAILED((document_manager)
        ->CreateContext(client_id_, 0,
            NULL,
            &context, &edit_cookie))) {
        return false;
    }
    if (FAILED((document_manager)->Push(context))) {
        return false;
    }
    ITfCompartmentMgr* compartment_mgr;
    if (FAILED(context->QueryInterface(IID_PPV_ARGS(&compartment_mgr)))) {
        return false;
    }
    ITfCompartment* empty_context;
    if (FAILED(compartment_mgr->GetCompartment(GUID_COMPARTMENT_EMPTYCONTEXT,
        &empty_context))) {
        return false;
    }
    VARIANT empty_context_variant{};
    empty_context_variant.vt = VT_I4;
    empty_context_variant.bVal = 1;
    if (FAILED(
        empty_context->SetValue(client_id_, &empty_context_variant))) {
        return false;
    }
    ITfCompartment* disabled_compartment;
    if (FAILED(compartment_mgr->GetCompartment(
        GUID_COMPARTMENT_KEYBOARD_DISABLED,
        &disabled_compartment))) {
        return false;
    }
    VARIANT variant{};
    variant.vt = VT_I4;
    variant.bVal = 1;
    if ((hr = (disabled_compartment->SetValue(client_id_, &variant))) != S_OK) {
        return false;
    }
}