DDC/CI確認

Brightness.cpp

#define UNICODE
#include <HighLevelMonitorConfigurationAPI.h>
#include <Windows.h>
#include <stdio.h>

int CALLBACK WinMain(
	_In_  HINSTANCE hInstance,
	_In_  HINSTANCE hPrevInstance,
	_In_  LPSTR lpCmdLine,
	_In_  int nCmdShow
	)
{

	HMONITOR hMonitor = NULL;
	DWORD cPhysicalMonitors;
	LPPHYSICAL_MONITOR pPhysicalMonitors = NULL;

	// Get the monitor handle.
	hMonitor = MonitorFromWindow(nullptr, MONITOR_DEFAULTTOPRIMARY);

	// Get the number of physical monitors.
	BOOL bSuccess = GetNumberOfPhysicalMonitorsFromHMONITOR(
		hMonitor,
		&cPhysicalMonitors
		);

	if (bSuccess)
	{
		// Allocate the array of PHYSICAL_MONITOR structures.
		pPhysicalMonitors = (LPPHYSICAL_MONITOR) malloc(
			cPhysicalMonitors* sizeof(PHYSICAL_MONITOR));

		if (pPhysicalMonitors != NULL)
		{
			// Get the array.
			bSuccess = GetPhysicalMonitorsFromHMONITOR(
				hMonitor, cPhysicalMonitors, pPhysicalMonitors);

			// Use the monitor handles (not shown).

			//輝度取得
			DWORD dwMin, dwCurrent, dwMax;
			BOOL bRet = GetMonitorBrightness(pPhysicalMonitors->hPhysicalMonitor,
				&dwMin,
				&dwCurrent,
				&dwMax);

			char szTmp[50];
			sprintf(szTmp, "%d\n%d\n%d\n", dwMin, dwCurrent, dwMax);
			MessageBoxA(nullptr, szTmp, "輝度取得", MB_OK);

			sprintf(szTmp, "%d\n", bRet);
			MessageBoxA(nullptr, szTmp, "輝度取得成否", MB_OK);

			DWORD dw2, dw3;
			bRet = GetMonitorCapabilities(pPhysicalMonitors->hPhysicalMonitor,
				&dw2, &dw3);

			sprintf(szTmp, "%d\n%d\n%d\n", dw2, dw3, bRet);
			MessageBoxA(nullptr, szTmp, "輝度取得可否", MB_OK);

			//			DWORD dwNewBrightness = 0;
			//			SetMonitorBrightness(pPhysicalMonitors->hPhysicalMonitor,
			//									dwNewBrightness);
			// Close the monitor handles.
			bSuccess = DestroyPhysicalMonitors(
				cPhysicalMonitors,
				pPhysicalMonitors);

			// Free the array.
			free(pPhysicalMonitors);
		}

		return 0;
	}
}