private IEnumerable <Monitor> EnumerateMonitors(NativeMethods.DISPLAY_DEVICE displayDevice)
{
for (uint id = 0; NativeMethods.EnumDisplayDevices(null, id, ref displayDevice, 0); id++)
{
if (!displayDevice.StateFlags.HasFlag(NativeMethods.DisplayDeviceStateFlags.AttachedToDesktop))
{
continue;
}
NativeMethods.DEVMODE ds = new NativeMethods.DEVMODE();
bool suc2 = NativeMethods.EnumDisplaySettings(displayDevice.DeviceName, NativeMethods.ENUM_CURRENT_SETTINGS,
ref ds);
if (!suc2)
{
Logger.Error("failed to enumerate current settings for display {InternalName}", displayDevice.DeviceName);
continue;
}
Monitor heliosMonitor = new Monitor(ConvertPixels(ds.dmPositionX),
ConvertPixels(ds.dmPositionY),
ConvertPixels(ds.dmPelsWidth),
ConvertPixels(ds.dmPelsHeight),
ds.dmDisplayOrientation);
// check this assumption that we make throughout the code: we identify the main display by its coordinates being
// 0,0 at the top left
Debug.Assert(displayDevice.StateFlags.HasFlag(NativeMethods.DisplayDeviceStateFlags.PrimaryDevice) ==
heliosMonitor.IsPrimaryDisplay);
yield return(heliosMonitor);
}
}
private Monitor CreateHeliosMonitor(NativeMethods.DISPLAY_DEVICE displayDevice)
{
NativeMethods.DEVMODE deviceMode = new NativeMethods.DEVMODE();
bool suc2 = NativeMethods.EnumDisplaySettings(displayDevice.DeviceName, NativeMethods.ENUM_CURRENT_SETTINGS,
ref deviceMode);
if (!suc2)
{
Logger.Error("failed to enumerate current settings for display {InternalName}", displayDevice.DeviceName);
return(null);
}
Monitor heliosMonitor = new Monitor(ConvertPixels(deviceMode.dmPositionX),
ConvertPixels(deviceMode.dmPositionY),
ConvertPixels(deviceMode.dmPelsWidth),
ConvertPixels(deviceMode.dmPelsHeight),
deviceMode.dmDisplayOrientation);
Logger.Debug("Created Helios Monitor for display {Name} of size {Width}x{Height} at {Left},{Top}",
displayDevice.DeviceName,
heliosMonitor.Width,
heliosMonitor.Height,
heliosMonitor.Left,
heliosMonitor.Top);
// check this assumption that we make throughout the code: we identify the main display by its coordinates being
// 0,0 at the top left
Debug.Assert(displayDevice.StateFlags.HasFlag(NativeMethods.DisplayDeviceStateFlags.PrimaryDevice) ==
heliosMonitor.IsPrimaryDisplay);
return(heliosMonitor);
}