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某次windows10 大更新，坑啊，调节亮度的快捷键失效了，多次卸载集显驱动和重新安装没有解决，无奈使用电源管理里面的亮度滑竿几个月后，更新了win10 1803， 本想能解决这个问题，然而。。。无奈只能自力更生，通过其他办法解决问题 一开始看到的是 Monitor Monitor Configuration Functions ， https://blog.csdn.net/tody_guo/article/details/16898749 https://msdn.microsoft.com/en-us/library/ms775232(v=vs.85).aspx 估计微软停止维护这套api很久了，获取的 physical monitor handle 总是为0，此法不行 然后找到一个瞎眼的调gammer。。。。 最后找到这个 https://blog.csdn.net/tody_guo/article/details/30255233 获得最终解决办法 本文工具 核心代码以及思路 均来自 https://blog.csdn.net/tody_guo/article/details/30255233 核心原理是 使用 c++连接 wmi 服务，进而修改 笔记本屏幕 lcd 背光亮度 wmi 接口路径 调节亮度类接口 root\wmi\WmiMonitorBrightnessMethods 获取当前亮度类接口 root\wmi\WmiMonitorBrightness 使用和细节： 因为无法使用fn当作热键，所以我使用 shift + alt 来代替 此程序目前硬编码为 shift + alt + f8 降低 5% 亮度 shift + alt + f9 提升 5% 亮度 可以在 第252行 和 第253行 修改硬编码的热键 在第184行修改硬编码 一阶亮度值 结束程序请使用 任务管理器直接结束 程序使用单例模式 程序没有窗口，请在任务管理器里面检查程序是否启动成功 vs2017工程 微云：https://share.weiyun.com/5cluRgV 完整源代码如下 #include #include #include #include #include #include #include #pragma comment(lib, "wbemuuid.lib") #pragma comment(lib, "comsuppw.lib") using namespace std; // wmi namespace IWbemLocator *wmiLocator = NULL; IWbemServices *wmiNamespace = 0; BSTR wmiPath = SysAllocString(L"root\\wmi"); HRESULT hr = S_OK; // brightnessAdjustmentClass IWbemClassObject *brightnessAdjustmentClass = NULL; IWbemClassObject *brightnessAdjustmentClassInstant = NULL; IWbemClassObject *brightnessAdjustmentClassObject = NULL; IWbemClassObject *brightnessAdjustmentMethodInstant = NULL; IEnumWbemClassObject *brightnessAdjustmentClassEnum = NULL; BSTR brightnessAdjustmentClassPath = SysAllocString(L"WmiMonitorBrightnessMethods"); BSTR brightnessAdjustmentMethodName = SysAllocString(L"WmiSetBrightness"); BSTR brightnessAdjustmentMethodArgName1 = SysAllocString(L"Timeout"); BSTR brightnessAdjustmentMethodArgName2 = SysAllocString(L"Brightness"); BSTR brightnessAdjustmentClassQuery = SysAllocString(L"Select * from WmiMonitorBrightnessMethods"); // brightnessClass IEnumWbemClassObject *brightnessClassEnum = NULL; //IWbemClassObject *brightnessClass = NULL; IWbemClassObject *brightnessClassObject = NULL; BSTR brightnessClassPath = SysAllocString(L"WmiMonitorBrightness"); BSTR brightnessVariableName = SysAllocString(L"CurrentBrightness"); BSTR brightnessQuery = SysAllocString(L"Select * from WmiMonitorBrightness"); int Init() { // Initialize COM and connect up to CIMOM hr = CoInitialize(0); if (FAILED(hr)) return -1; hr = CoInitializeSecurity(NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_DEFAULT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, NULL); if (FAILED(hr)) return -1; hr = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *)&wmiLocator); if (FAILED(hr)) return -1; hr = wmiLocator->ConnectServer(wmiPath, NULL, NULL, NULL, 0, NULL, NULL, &wmiNamespace); if (hr != WBEM_S_NO_ERROR) return -1; hr = CoSetProxyBlanket(wmiNamespace, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE, NULL, RPC_C_AUTHN_LEVEL_CALL, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE); if (hr != WBEM_S_NO_ERROR) return -1; // query variable enum hr = wmiNamespace->ExecQuery(_bstr_t(L"WQL"), brightnessAdjustmentClassQuery, WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &brightnessAdjustmentClassEnum); if (hr != WBEM_S_NO_ERROR) return -1; /*hr = wmiNamespace->ExecQuery(_bstr_t(L"WQL"), brightnessQuery, WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &brightnessClassEnum); if (hr != WBEM_S_NO_ERROR) return -1;*/ // get class obj ULONG ret; hr = brightnessAdjustmentClassEnum->Next(WBEM_INFINITE, 1, &brightnessAdjustmentClassObject, &ret); if (hr != WBEM_S_NO_ERROR) return -1; hr = wmiNamespace->GetObject(brightnessAdjustmentClassPath, 0, NULL, &brightnessAdjustmentClass, NULL); if (hr != WBEM_S_NO_ERROR) return -1; // get brightness adjust method instant hr = brightnessAdjustmentClass->GetMethod(brightnessAdjustmentMethodName, 0, &brightnessAdjustmentClassInstant, NULL); if (hr != WBEM_S_NO_ERROR) return -1; hr = brightnessAdjustmentClassInstant->SpawnInstance(0, &brightnessAdjustmentMethodInstant); if (hr != WBEM_S_NO_ERROR) return -1; return 0; } int GetBrightness() { // 每次都需要查询 if (brightnessClassEnum) brightnessClassEnum->Release(); if (brightnessClassObject) brightnessClassObject->Release(); HRESULT hr = wmiNamespace->ExecQuery(_bstr_t(L"WQL"), brightnessQuery, WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &brightnessClassEnum); if (hr != WBEM_S_NO_ERROR) return -1; DWORD ret; hr = brightnessClassEnum->Next(WBEM_INFINITE, 1, &brightnessClassObject, &ret); if (hr != WBEM_S_NO_ERROR) return -1; // 获得亮度值 VARIANT brightnessValue; VariantInit(&brightnessValue); hr = brightnessClassObject->Get(brightnessVariableName, 0, &brightnessValue, 0, 0); if (hr != WBEM_S_NO_ERROR) return -1; return brightnessValue.uintVal; } int SetBrightness(int brightness) { // 亮度范围是 [0, 100] brightness = min(max(brightness, 0), 100); // write brightness adjust params VARIANT var; VariantInit(&var); V_VT(&var) = VT_BSTR; // write timeout param V_BSTR(&var) = SysAllocString(L"0"); hr = brightnessAdjustmentMethodInstant->Put(brightnessAdjustmentMethodArgName1, 0, &var, CIM_UINT32); if (hr != WBEM_S_NO_ERROR) return -1; // write brightness param V_BSTR(&var) = SysAllocString(to_wstring(brightness).c_str()); hr = brightnessAdjustmentMethodInstant->Put(brightnessAdjustmentMethodArgName2, 0, &var, CIM_UINT8); VariantClear(&var); if (hr != WBEM_S_NO_ERROR) return -1; // 获取 method instant path 和 execute VARIANT pathVariable; VariantInit(&pathVariable); hr = brightnessAdjustmentClassObject->Get(_bstr_t(L"__PATH"), 0, &pathVariable, NULL, NULL); if (hr != WBEM_S_NO_ERROR) return -1; hr =wmiNamespace->ExecMethod(pathVariable.bstrVal, brightnessAdjustmentMethodName, 0, NULL, brightnessAdjustmentMethodInstant, NULL, NULL); VariantClear(&pathVariable); if (hr != WBEM_S_NO_ERROR) return -1; return 0; } void Cleanup() { // 清理 SysFreeString(wmiPath); SysFreeString(brightnessAdjustmentClassPath); SysFreeString(brightnessAdjustmentMethodName); SysFreeString(brightnessAdjustmentMethodArgName1); SysFreeString(brightnessAdjustmentMethodArgName2); SysFreeString(brightnessAdjustmentClassQuery); SysFreeString(brightnessClassPath); SysFreeString(brightnessVariableName); SysFreeString(brightnessQuery); brightnessAdjustmentClass->Release(); brightnessAdjustmentMethodInstant->Release(); brightnessAdjustmentClassInstant->Release(); brightnessAdjustmentClassObject->Release(); brightnessAdjustmentClassEnum->Release(); //if (brightnessClass) brightnessClass->Release(); brightnessClassObject->Release(); brightnessClassEnum->Release(); wmiNamespace->Release(); wmiLocator->Release(); CoUninitialize(); } // 亮度进阶值 const int incrementValue = 5; void IncreaseBrightness() { // 提升一阶亮度 int i = GetBrightness(); SetBrightness(i + incrementValue); } void ReduceBrightness() { // 降低一阶亮度 int i = GetBrightness(); SetBrightness(i - incrementValue); } ATOM hotKeyId1, hotKeyId2; LRESULT __stdcall WndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam) { switch (Msg) { case WM_DESTROY: PostQuitMessage(0); break; case WM_HOTKEY: if (wParam == hotKeyId1) PostMessageA(0, WM_USER + 1, 0, 0); else if (wParam == hotKeyId2) PostMessageA(0, WM_USER + 2, 0, 0); break; } return DefWindowProcA(hWnd, Msg, wParam, lParam); } int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { // 全局唯一 auto m = CreateMutexA(NULL, TRUE, "{CAF16FA1-1E0C-419B-9D45-99B5719ED318}"); if (ERROR_ALREADY_EXISTS == GetLastError()) return -1; int r = Init(); if (r != 0) return -1; //创建隐藏窗口，仅用于捕获热键 WNDCLASSEX wcex; memset(&wcex, 0, sizeof(wcex)); wcex.cbSize = sizeof(wcex); wcex.style = 0; wcex.lpfnWndProc= WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = GetModuleHandleA(0); wcex.hIcon = 0; wcex.hCursor = 0; wcex.hbrBackground = 0; wcex.lpszMenuName = 0; wcex.lpszClassName = "test"; if (RegisterClassExA(&wcex) == FALSE) return -1; HWND hwnd = CreateWindowA("test", "", WS_EX_NOACTIVATE, 0, 0, 0, 0, 0, 0, GetModuleHandleA(0), 0); ShowWindow(hwnd, SW_HIDE); //注册热键 hotKeyId1 = GlobalAddAtom("MonitorBrightnessAdjuster1") - 0xc000; hotKeyId2 = GlobalAddAtom("MonitorBrightnessAdjuster2") - 0xc000; int b = RegisterHotKey(hwnd, hotKeyId1, MOD_SHIFT | MOD_ALT, VK_F8); b = RegisterHotKey(hwnd, hotKeyId2, MOD_SHIFT | MOD_ALT, VK_F9); MSG msg; while (GetMessageA(&msg, 0, 0, 0)) { TranslateMessage(&msg); DispatchMessageW(&msg); if (msg.message == WM_USER + 1) ReduceBrightness(); else if (msg.message == WM_USER + 2) IncreaseBrightness(); } // 一般不会到达这里，一般是直接任务管理器结束此程序 // 清理 UnregisterHotKey(hwnd, hotKeyId1); UnregisterHotKey(hwnd, hotKeyId2); GlobalDeleteAtom(hotKeyId1); GlobalDeleteAtom(hotKeyId2); Cleanup(); return 0; } |
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