public Monitor(IntPtr hMonitor, IntPtr hdcMonitor)
{
_hMonitor = hMonitor;
_hdcMonitor = hdcMonitor;
Log.Info($"Create monitor hMonitor:{_hMonitor} hdcMonitor:{_hdcMonitor}");
// Get the current brightness
try
{
SupportBrightness = true;
if (!MonitorMethods.GetNumberOfPhysicalMonitorsFromHMONITOR(_hMonitor, ref _physicalMonitorsCount))
{
throw new ApplicationException($"Cannot GetNumberOfPhysicalMonitorsFromHMONITOR for hmonitor {_hMonitor}");
}
_physicalMonitors = new MonitorStructures.PhysicalMonitor[_physicalMonitorsCount];
if (!MonitorMethods.GetPhysicalMonitorsFromHMONITOR(_hMonitor, _physicalMonitorsCount, _physicalMonitors))
{
throw new ApplicationException($"Cannot GetPhysicalMonitorsFromHMONITOR for hmonitor {_hMonitor}");
}
InitialBrightness = GetBrightness();
foreach (var monitor in _physicalMonitors)
{
Log.Info($"Monitor physicalmonitor handle:{monitor.hPhysicalMonitor} description:{monitor.szPhysicalMonitorDescription} with brightness {InitialBrightness}");
}
}
catch (Exception err)
{
Log.Log(LogLevel.Error, err, "Unable to get brightness. Brightness will not be supported.");
SupportBrightness = false;
}
// Get the current gamma Ramp
try
{
_linearGammaRamp = GetDefaultGammaRamp();
SetDeviceGammaRamp(_hdcMonitor, ref _linearGammaRamp);
}
catch (Exception err)
{
Log.Log(LogLevel.Error, err, "Unable to get base gamma ramp");
}
}
public static List <Monitor> Create()
{
var result = new List <Monitor>();
var zeroDc = MonitorMethods.GetDC(IntPtr.Zero);
MonitorMethods.EnumDisplayMonitors(zeroDc, IntPtr.Zero, (IntPtr hMonitor, IntPtr hdcMonitor, ref Rectangle lprcMonitor, IntPtr dwData) =>
{
hdcMonitor = zeroDc; // Multi monitor bug? Can't get/set device gamma ramp with given hdcMonitor
result.Add(new Monitor(hMonitor, hdcMonitor));
return(true);
}, IntPtr.Zero);
return(result);
}
public void SetBrightness(int brightness)
{
if (!SupportBrightness)
{
return;
}
uint ubrightness = (uint)brightness;
ubrightness = Math.Min(ubrightness, Math.Max(0, ubrightness));
ubrightness = (MaxBrightness - MinBrightness) * ubrightness / 100u + MinBrightness;
foreach (var physicalMonitor in _physicalMonitors)
{
Log.Info($"Set brightness {physicalMonitor.hPhysicalMonitor} to {brightness}");
MonitorMethods.SetMonitorBrightness(physicalMonitor.hPhysicalMonitor, ubrightness);
}
}
public int GetBrightness()
{
if (!SupportBrightness)
{
return(100);
}
uint brightness = 0;
uint minBrightness = 0;
uint maxBrightness = 0;
if (!MonitorMethods.GetMonitorBrightness(_physicalMonitors[0].hPhysicalMonitor, ref minBrightness, ref brightness, ref maxBrightness))
{
throw new ApplicationException("Unable to retrieve brightness through GetMonitorBrightness call.");
}
Log.Info($"Brightness {brightness} Max {maxBrightness} min {minBrightness}");
MinBrightness = minBrightness;
MaxBrightness = maxBrightness;
return((int)brightness);
}