MSDN<\/a> \u91cc\u63d0\u5230\u53ef\u4ee5\u4f7f\u7528 Raw Input \u4ee3\u66ff WH_KEYBOARD_LL \u8fd9\u4e2a\u94a9\u5b50\uff0c\u56e0\u4e3a RawInput \u662f\u5f02\u6b65\u76d1\u89c6\u7684\uff0c\u4e0d\u50cf LL \u94a9\u5b50\u8981\u5207\u6362\u8fdb\u7a0b\u7a7a\u95f4\uff0c\u53ef\u4ee5\u83b7\u5f97\u66f4\u597d\u7684\u6027\u80fd\u3002<\/p>\n\u4e0b\u9762\u662f\u5904\u7406\u8f93\u5165\u5b57\u7b26\u903b\u8f91\u7684\u4ee3\u7801<\/p>\n
void UsbScanner::UsbScannerImpl2::SaveChar(uint16_t vkey, uint16_t scancode, bool keydown)\r\n{\r\n\tauto diff = chrono::steady_clock::now() - mLastReceiveTime;\r\n\tif (!mDataBuffer.empty() && diff > chrono::milliseconds(mTimeoutThreshold))\r\n\t{\r\n\t\tFlush();\r\n\t}\r\n\r\n\tchar name[255] = { 0 };\r\n\tif (GetKeyNameTextA(scancode << 16, name, _countof(name)) == 0)\r\n\t\treturn;\r\n\r\n\tif (vkey == VK_SPACE)\r\n\t\tname[0] = ' ';\r\n\telse if (vkey == VK_RETURN)\r\n\t\tname[0] = '\\n';\r\n\telse if (strlen(name) > 1)\r\n\t\treturn;\r\n\r\n\tbool cap2 = !!(GetKeyState(VK_CAPITAL) & 1);\r\n\tbool shift2 = !!(GetKeyState(VK_LSHIFT) & 0x8000) || !!(GetKeyState(VK_RSHIFT) & 0x8000);\r\n\r\n\t\/\/ GetKeyNameText \u8fd4\u56de\u7684\u662f\u5927\u5199\u5b57\u6bcd\r\n\tname[0] = cap2 ? toupper(name[0]) : tolower(name[0]);\r\n\r\n\tif (shift2)\r\n\t{\r\n\t\tif (islower(name[0]))\r\n\t\t\tname[0] -= 32;\r\n\t\telse if (isupper(name[0]))\r\n\t\t\tname[0] += 32;\r\n\t\telse\r\n\t\t{\r\n\t\t\tstring l = "`1234567890-=[];',.\/\\\\";\r\n\t\t\tstring u = "~!@#$%^&*()_+{}:\\"<>?|";\r\n\t\t\tsize_t pos = l.find_first_of(name[0]);\r\n\t\t\tif (pos != string::npos)\r\n\t\t\t\tname[0] = u[pos];\r\n\t\t}\r\n\t}\r\n\r\n\tif (keydown)\r\n\t{\r\n\t\tmLastReceiveTime = chrono::steady_clock::now();\r\n\t\tmDataBuffer.push_back(name[0]);\r\n\t}\r\n}<\/pre>\n\u94a9\u5b50\u7684\u8bbe\u7f6e\u548c\u94a9\u5b50\u51fd\u6570\u53c2\u6570\u7684\u610f\u4e49\u53c2\u8003 msdn\u3002\u4e3b\u8981\u7684\u5904\u7406\u90fd\u5728\u8fd9\u91cc\u9762\u4e86\uff0c\u5bf9\u4e8e\u6bcf\u4e2a\u952e\u76d8\u8f93\u5165\u53d6\u51fa\u6309\u952e\u5bf9\u5e94\u7684\u5b57\u7b26\uff0c\u5e76\u67e5\u770b\u5f53\u524d\u7684 shift \u548c capital \u72b6\u6001\u5c06\u8f93\u5165\u8fdb\u884c\u9002\u5f53\u7684\u8f6c\u6362\u3002\u5982\u679c\u5728\u6307\u5b9a\u7684\u8d85\u65f6\u65f6\u95f4\u5185\uff0c\u5219\u8ba4\u4e3a\u662f\u540c\u4e00\u6279\u8f93\u5165\uff0c\u5c06\u5176\u5b58\u653e\u5230\u7f13\u5b58\u91cc\u3002\u9664\u6b64\u4e4b\u5916\u8fd8\u6709\u4e00\u4e2a\u7ebf\u7a0b\u8fdb\u884c\u5b9a\u671f\u7684\u68c0\u67e5\uff0c\u5982\u679c\u8d85\u65f6\u65f6\u95f4\u5185\u6ca1\u6709\u8f93\u5165\u5219\u81ea\u52a8\u5c06\u7f13\u5b58\u7684\u6570\u636e\u53d1\u9001\u7ed9\u8bbe\u7f6e\u7684\u56de\u8c03\u51fd\u6570\u3002<\/p>\n
\u53e6\u5916\u56e0\u4e3a\u94a9\u5b50\u9700\u8981\u6d88\u606f\u5faa\u73af\u7684\u652f\u6301\uff0c\u6240\u4ee5\u5728\u521d\u59cb\u5316\u8fc7\u7a0b\u4e2d\u521b\u5efa\u4e86\u4e00\u4e2a\u9690\u85cf\u7684\u7a97\u53e3\u5e76\u8fdb\u884c\u6d88\u606f\u961f\u5217\u7684\u5904\u7406\u3002<\/p>\n
\u4e0b\u9762\u662f RawInput \u7248\u7684\u521d\u59cb\u5316\u4ee3\u7801<\/p>\n
bool UsbScanner::UsbScannerImpl2::Start(std::function<void(const string &)> receiver, int timeoutThreshold, unsigned long tid)\r\n{\r\n\tif (!mStop)\r\n\t\treturn false;\r\n\r\n\tassert(tid == 0);\r\n\tmTimeoutThreshold = timeoutThreshold;\r\n\tmReceiver = receiver;\r\n\r\n\tmStop = false;\r\n\tmReady = false;\r\n\tmProcess = std::thread([this, tid]() {\r\n\r\n\t\tWNDCLASSEXW wcex;\r\n\t\twcex.cbSize = sizeof(WNDCLASSEX);\r\n\r\n\t\twcex.style = CS_HREDRAW | CS_VREDRAW;\r\n\t\twcex.lpfnWndProc = DefWindowProc;\r\n\t\twcex.cbClsExtra = 0;\r\n\t\twcex.cbWndExtra = 0;\r\n\t\twcex.hInstance = GetModuleHandle(NULL);\r\n\t\twcex.hIcon = NULL;\r\n\t\twcex.hCursor = LoadCursor(nullptr, IDC_ARROW);\r\n\t\twcex.hbrBackground = NULL;\r\n\t\twcex.lpszMenuName = NULL;\r\n\t\twcex.lpszClassName = Detail::WndClassName;\r\n\t\twcex.hIconSm = NULL;\r\n\t\tRegisterClassExW(&wcex);\r\n\r\n\t\tmWnd = CreateWindowW(Detail::WndClassName, L"", WS_OVERLAPPEDWINDOW,\r\n\t\t\t1, 0, 1, 1, nullptr, nullptr, GetModuleHandle(NULL), nullptr);\r\n\t\tif (mWnd != NULL)\r\n\t\t{\r\n\t\t\tUpdateWindow(mWnd);\r\n\t\t\tShowWindow(mWnd, SW_HIDE);\r\n\r\n\t\t\tRAWINPUTDEVICE Rid[1];\r\n\t\t\tRid[0].usUsagePage = 0x01;\r\n\t\t\tRid[0].usUsage = 0x06;\r\n\t\t\tRid[0].dwFlags = RIDEV_INPUTSINK;\r\n\t\t\tRid[0].hwndTarget = mWnd;\r\n\r\n\t\t\tif (RegisterRawInputDevices(Rid, 1, sizeof(Rid[0])) == FALSE)\r\n\t\t\t\tmStop = true;\r\n\t\t\telse\r\n\t\t\t\tmReady = true;\r\n\t\t}\r\n\t\telse\r\n\t\t{\r\n\t\t\tmStop = true;\r\n\t\t}\r\n\r\n\r\n\t\t{\r\n\t\t\tstd::unique_lock<std::mutex> lock(mConditionLock);\r\n\t\t\tmCondition.notify_one();\r\n\t\t}\r\n\r\n\t\tMSG msg;\r\n\t\twhile (!mStop)\r\n\t\t{\r\n\t\t\tif (PeekMessage(&msg, mWnd, NULL, NULL, PM_NOREMOVE) == 0)\r\n\t\t\t{\r\n\t\t\t\tif (!mDataBuffer.empty() && chrono::steady_clock::now() - mLastReceiveTime > chrono::milliseconds(mTimeoutThreshold))\r\n\t\t\t\t{\r\n\t\t\t\t\tFlush();\r\n\t\t\t\t}\r\n\t\t\t\telse\r\n\t\t\t\t{\r\n\t\t\t\t\tthis_thread::sleep_for(chrono::milliseconds(1));\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t\telse\r\n\t\t\t{\r\n\t\t\t\tGetMessage(&msg, mWnd, NULL, NULL);\r\n\t\t\t\tif (msg.message != WM_INPUT)\r\n\t\t\t\t{\r\n\t\t\t\t\tTranslateMessage(&msg);\r\n\t\t\t\t\tDispatchMessage(&msg);\r\n\t\t\t\t}\r\n\t\t\t\telse\r\n\t\t\t\t{\r\n\t\t\t\t\tUINT dwSize;\r\n\t\t\t\t\tGetRawInputData((HRAWINPUT)msg.lParam, RID_INPUT, NULL, &dwSize,\r\n\t\t\t\t\t\tsizeof(RAWINPUTHEADER));\r\n\t\t\t\t\tvector<BYTE> lpb;\r\n\t\t\t\t\tlpb.resize(dwSize);\r\n\r\n\t\t\t\t\tif (GetRawInputData((HRAWINPUT)msg.lParam, RID_INPUT, lpb.data(), &dwSize,\r\n\t\t\t\t\t\tsizeof(RAWINPUTHEADER)) != dwSize)\r\n\t\t\t\t\t\tthrow exception("GetRawInputData does not return correct size !\\n");\r\n\r\n\t\t\t\t\tRAWINPUT* raw = (RAWINPUT*)lpb.data();\r\n\t\t\t\t\tif (raw->header.dwType == RIM_TYPEKEYBOARD)\r\n\t\t\t\t\t{\r\n\t\t\t\t\t\tSaveChar(\r\n\t\t\t\t\t\t\traw->data.keyboard.VKey,\r\n\t\t\t\t\t\t\traw->data.keyboard.MakeCode,\r\n\t\t\t\t\t\t\traw->data.keyboard.Flags == RI_KEY_MAKE\r\n\t\t\t\t\t\t);\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t}\r\n\t});\r\n\r\n\tstd::unique_lock<std::mutex> lock(mConditionLock);\r\n\tmCondition.wait(lock, [this] { return mReady || mStop; });\r\n\tif (mStop)\r\n\t{\r\n\t\tmProcess.detach();\r\n\t\treturn false;\r\n\t}\r\n\treturn true;\r\n}<\/pre>\n\u9664\u53bb\u4e00\u4e9b\u7ebf\u7a0b\u540c\u6b65\u7684\u4ee3\u7801\u5916\uff0c\u57fa\u672c\u7684\u6d41\u7a0b\u5c31\u662f\u521b\u5efa\u7a97\u53e3\uff0c\u7136\u540e\u8c03\u7528 RegisterRawInputDevices \u8fdb\u884c\u6ce8\u518c\uff0c\u968f\u540e\u7b49\u5f85 WM_INPUT \u4e8b\u4ef6\u5373\u53ef\u3002\u6309\u952e\u7684\u5904\u7406\u903b\u8f91\u90fd\u662f\u4e00\u6837\u7684\u3002<\/p>\n
\u5b8c\u6574\u4ee3\u7801\u89c1\u6b64<\/a>\uff0c\u91cc\u9762\u4e5f\u5305\u542b\u6709\u4f7f\u7528\u94a9\u5b50\u7248\u7684\uff0c\u9009\u62e9\u4e00\u4e2a\u4f7f\u7528\u5373\u53ef\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u6700\u8fd1\u516c\u53f8\u4e70\u4e86\u4e2a\u626b\u63cf\u67aa\uff0c\u8981\u7ed9\u8bbe\u5907\u4e8c\u7ef4\u7801\u505a\u626b\u63cf\u5f55\u5165\u5de5\u4f5c\u3002\u539f\u6765\u8ddf\u6211\u8bf4\u7684\u662f\u4e32\u53e3\u7684\u626b\u63cf\u67aa\uff0c\u6ca1\u60f3\u5230\u540e\u6765\u4e70\u5230\u7684\u662f usb \u7684… <\/p>\n
\u9605\u8bfb\u66f4\u591a<\/i><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[85],"tags":[35,37,36],"class_list":["post-474","post","type-post","status-publish","format-standard","hentry","category-programs","tag-usb","tag-windows","tag-36"],"_links":{"self":[{"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/posts\/474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/comments?post=474"}],"version-history":[{"count":1,"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/posts\/474\/revisions"}],"predecessor-version":[{"id":2173,"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/posts\/474\/revisions\/2173"}],"wp:attachment":[{"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/media?parent=474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/categories?post=474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/flandre-scarlet.moe\/blog\/wp-json\/wp\/v2\/tags?post=474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}