a little simplify

Zhao Yuhang

2023-12-10 b0249aebbacf71eee27e77c766ccb3dc33693b11

a little simplify

 src/core/contexts/win32windowcontext.cpp

@@ -60,46 +60,42 @@
//            }
//        };
//
// #define DWM_API_DECLARE(NAME) decltype(&::NAME) p##NAME = DefaultFunc<decltype(&::NAME)>::func
#define DWM_API_DECLARE(NAME) decltype(&::NAME) p##NAME = nullptr
// #define DYNAMIC_API_DECLARE(NAME) decltype(&::NAME) p##NAME = DefaultFunc<decltype(&::NAME)>::func
#define DYNAMIC_API_DECLARE(NAME) decltype(&::NAME) p##NAME = nullptr

        DWM_API_DECLARE(DwmFlush);
        DWM_API_DECLARE(DwmIsCompositionEnabled);
        DWM_API_DECLARE(DwmGetCompositionTimingInfo);
        DWM_API_DECLARE(GetDpiForWindow);
        DWM_API_DECLARE(GetSystemMetricsForDpi);
        DWM_API_DECLARE(GetDpiForMonitor);
        DWM_API_DECLARE(timeGetDevCaps);
        DWM_API_DECLARE(timeBeginPeriod);
        DWM_API_DECLARE(timeEndPeriod);
        DYNAMIC_API_DECLARE(DwmFlush);
        DYNAMIC_API_DECLARE(DwmIsCompositionEnabled);
        DYNAMIC_API_DECLARE(DwmGetCompositionTimingInfo);
        DYNAMIC_API_DECLARE(GetDpiForWindow);
        DYNAMIC_API_DECLARE(GetSystemMetricsForDpi);
        DYNAMIC_API_DECLARE(GetDpiForMonitor);
        DYNAMIC_API_DECLARE(timeGetDevCaps);
        DYNAMIC_API_DECLARE(timeBeginPeriod);
        DYNAMIC_API_DECLARE(timeEndPeriod);

#undef DWM_API_DECLARE
#undef DYNAMIC_API_DECLARE

        DynamicApis() {
#define DYNAMIC_API_RESOLVE(DLL, NAME) p##NAME = reinterpret_cast<decltype(p##NAME)>(DLL##.resolve(#NAME))

            QSystemLibrary user32(QStringLiteral("user32"));
            pGetDpiForWindow =
                reinterpret_cast<decltype(pGetDpiForWindow)>(user32.resolve("GetDpiForWindow"));
            pGetSystemMetricsForDpi = reinterpret_cast<decltype(pGetSystemMetricsForDpi)>(
                user32.resolve("GetSystemMetricsForDpi"));
            DYNAMIC_API_RESOLVE(user32, GetDpiForWindow);
            DYNAMIC_API_RESOLVE(user32, GetSystemMetricsForDpi);

            QSystemLibrary shcore(QStringLiteral("shcore"));
            pGetDpiForMonitor =
                reinterpret_cast<decltype(pGetDpiForMonitor)>(shcore.resolve("GetDpiForMonitor"));
            DYNAMIC_API_RESOLVE(shcore, GetDpiForMonitor);

            QSystemLibrary dwmapi(QStringLiteral("dwmapi"));
            pDwmFlush = reinterpret_cast<decltype(pDwmFlush)>(dwmapi.resolve("DwmFlush"));
            pDwmIsCompositionEnabled = reinterpret_cast<decltype(pDwmIsCompositionEnabled)>(
                dwmapi.resolve("DwmIsCompositionEnabled"));
            pDwmGetCompositionTimingInfo = reinterpret_cast<decltype(pDwmGetCompositionTimingInfo)>(
                dwmapi.resolve("DwmGetCompositionTimingInfo"));
            DYNAMIC_API_RESOLVE(dwmapi, DwmFlush);
            DYNAMIC_API_RESOLVE(dwmapi, DwmIsCompositionEnabled);
            DYNAMIC_API_RESOLVE(dwmapi, DwmGetCompositionTimingInfo);

            QSystemLibrary winmm(QStringLiteral("winmm"));
            ptimeGetDevCaps =
                reinterpret_cast<decltype(ptimeGetDevCaps)>(winmm.resolve("timeGetDevCaps"));
            ptimeBeginPeriod =
                reinterpret_cast<decltype(ptimeBeginPeriod)>(winmm.resolve("timeBeginPeriod"));
            ptimeEndPeriod =
                reinterpret_cast<decltype(ptimeEndPeriod)>(winmm.resolve("timeEndPeriod"));
            DYNAMIC_API_RESOLVE(winmm, timeGetDevCaps);
            DYNAMIC_API_RESOLVE(winmm, timeBeginPeriod);
            DYNAMIC_API_RESOLVE(winmm, timeEndPeriod);

#undef DYNAMIC_API_RESOLVE
        }

        ~DynamicApis() = default;