Added methods to use the new GetColor method

CueSDK.cs

@@ -236,6 +236,15 @@ namespace CUE.NET
             IsInitialized = true;
         }
 
+        /// <summary>
+        /// Resets the colors of all devices back to the last saved color-data. (If there wasn't a manual save, that's the data from the time the SDK was initialized.)
+        /// </summary>
+        public static void Reset()
+        {
+            foreach (ICueDevice device in InitializedDevices)
+                device.RestoreColors();
+        }
+
         /// <summary>
         /// Reinitialize the CUE-SDK and temporarily hand back full control to CUE.
         /// </summary>

Devices/Generic/AbstractCueDevice.cs

@@ -29,6 +29,8 @@ namespace CUE.NET.Devices.Generic
 
         private static DateTime _lastUpdate = DateTime.Now;
 
+        private Dictionary<CorsairLedId, CorsairColor> _colorDataSave;
+
         /// <summary>
         /// Gets generic information provided by CUE for the device.
         /// </summary>
@@ -56,6 +58,7 @@ namespace CUE.NET.Devices.Generic
 
         /// <summary>
         /// Gets or sets the background brush of the keyboard.
+        /// If this is null the last saved color-data is used as background.
         /// </summary>
         public IBrush Brush { get; set; }
 
@@ -153,6 +156,7 @@ namespace CUE.NET.Devices.Generic
         public virtual void Initialize()
         {
             DeviceRectangle = RectangleHelper.CreateRectangleFromRectangles((this).Select(x => x.LedRectangle));
+            SaveColors();
         }
 
         /// <summary>
@@ -187,19 +191,26 @@ namespace CUE.NET.Devices.Generic
         /// Performs an update for all dirty keys, or all keys if flushLeds is set to true.
         /// </summary>
         /// <param name="flushLeds">Specifies whether all keys (including clean ones) should be updated.</param>
-        public void Update(bool flushLeds = false)
+        /// <param name="noRender">Only updates the hardware-leds skippin effects and the render-pass. Only use this if you know what that means!</param>
+        public void Update(bool flushLeds = false, bool noRender = false)
         {
             OnUpdating();
 
-            // Update effects
+            if (!noRender)
-            foreach (ILedGroup ledGroup in LedGroups)
+            {
-                ledGroup.UpdateEffects();
+                // Update effects
+                foreach (ILedGroup ledGroup in LedGroups)
+                    ledGroup.UpdateEffects();
 
-            // Render brushes
+                // Render brushes
-            Render(this);
+                if (Brush != null)
-            foreach (ILedGroup ledGroup in LedGroups.OrderBy(x => x.ZIndex))
+                    Render(this);
-                Render(ledGroup);
+                else
+                    ApplyColorData(_colorDataSave);
 
+                foreach (ILedGroup ledGroup in LedGroups.OrderBy(x => x.ZIndex))
+                    Render(ledGroup);
+            }
             // Device-specific updates
             DeviceUpdate();
 
@@ -293,6 +304,63 @@ namespace CUE.NET.Devices.Generic
             OnLedsUpdated(updateRequests);
         }
 
+        /// <inheritdoc />
+        public void SyncColors()
+        {
+            Dictionary<CorsairLedId, CorsairColor> colorData = GetColors();
+            ApplyColorData(colorData);
+            Update(true, true);
+        }
+
+        /// <inheritdoc />
+        public void SaveColors()
+        {
+            _colorDataSave = GetColors();
+        }
+
+        /// <inheritdoc />
+        public void RestoreColors()
+        {
+            ApplyColorData(_colorDataSave);
+            Update(true, true);
+        }
+
+        private void ApplyColorData(Dictionary<CorsairLedId, CorsairColor> colorData)
+        {
+            if (colorData == null) return;
+
+            foreach (KeyValuePair<CorsairLedId, CorsairColor> corsairColor in _colorDataSave)
+                LedMapping[corsairColor.Key].Color = corsairColor.Value;
+        }
+
+        private Dictionary<CorsairLedId, CorsairColor> GetColors()
+        {
+            int structSize = Marshal.SizeOf(typeof(_CorsairLedColor));
+            IntPtr ptr = Marshal.AllocHGlobal(structSize * LedMapping.Count);
+            IntPtr addPtr = new IntPtr(ptr.ToInt64());
+            foreach (KeyValuePair<CorsairLedId, CorsairLed> led in LedMapping)
+            {
+                _CorsairLedColor color = new _CorsairLedColor { ledId = (int)led.Value.Id };
+                Marshal.StructureToPtr(color, addPtr, false);
+                addPtr = new IntPtr(addPtr.ToInt64() + structSize);
+            }
+            _CUESDK.CorsairGetLedsColors(LedMapping.Count, ptr);
+
+            IntPtr readPtr = ptr;
+            Dictionary<CorsairLedId, CorsairColor> colorData = new Dictionary<CorsairLedId, CorsairColor>();
+            for (int i = 0; i < LedMapping.Count; i++)
+            {
+                _CorsairLedColor ledColor = (_CorsairLedColor)Marshal.PtrToStructure(readPtr, typeof(_CorsairLedColor));
+                colorData.Add((CorsairLedId)ledColor.ledId, new CorsairColor((byte)ledColor.r, (byte)ledColor.g, (byte)ledColor.b));
+
+                readPtr = new IntPtr(readPtr.ToInt64() + structSize);
+            }
+
+            Marshal.FreeHGlobal(ptr);
+
+            return colorData;
+        }
+
         #endregion
 
         #region LedGroup

Devices/ICueDevice.cs

@@ -140,10 +140,26 @@ namespace CUE.NET.Devices
         void Initialize();
 
         /// <summary>
-        /// Perform an update for all dirty keys, or all keys if flushLeds is set to true.
+        /// Performs an update for all dirty keys, or all keys if flushLeds is set to true.
         /// </summary>
         /// <param name="flushLeds">Specifies whether all keys (including clean ones) should be updated.</param>
-        void Update(bool flushLeds = false);
+        /// <param name="noRender">Only updates the hardware-leds skippin effects and the render-pass. Only use this if you know what that means!</param>
+        void Update(bool flushLeds = false, bool noRender = false);
+
+        /// <summary>
+        /// Reads the currently active colors from the device and sync them with the internal state.
+        /// </summary>
+        void SyncColors();
+
+        /// <summary>
+        /// Saves the currently active colors from the device.
+        /// </summary>
+        void SaveColors();
+
+        /// <summary>
+        /// Restores the last saved colors.
+        /// </summary>
+        void RestoreColors();
 
         /// <summary>
         /// Attaches the given ledgroup.

Examples/SimpleDevTest/Program.cs

@@ -39,7 +39,7 @@ namespace SimpleDevTest
                 CueSDK.Initialize();
                 Console.WriteLine("Initialized with " + CueSDK.LoadedArchitecture + "-SDK");
 
-                CueSDK.KeyboardSDK.Brush = (SolidColorBrush)Color.Black;
+                //CueSDK.KeyboardSDK.Brush = (SolidColorBrush)Color.Black;
                 //CueSDK.KeyboardSDK[CorsairLedId.Z].Color = Color.Red;
                 //CueSDK.KeyboardSDK[CorsairLedId.Z].IsLocked = true;
 
@@ -51,12 +51,15 @@ namespace SimpleDevTest
                 //CueSDK.KeyboardSDK.Brush = new LinearGradientBrush(new LinearGradient(true, new GradientStop(0, Color.Blue), new GradientStop(0.5f, Color.Red)));
                 left.Brush = new ConicalGradientBrush(new PointF(0.6f, 0.7f), new RainbowGradient(360, 0));
                 left.Brush.AddEffect(new MoveGradientEffect());
+                left.Brush.AddEffect(new FlashEffect { Attack = 2, Sustain = 1f, Release = 2, Interval = 1f });
 
                 mid.Brush = new ConicalGradientBrush(new PointF(0.5f, 0.3f), new RainbowGradient());
                 mid.Brush.AddEffect(new MoveGradientEffect());
+                mid.Brush.AddEffect(new FlashEffect { Attack = 2, Sustain = 1f, Release = 2, Interval = 1f });
 
                 right.Brush = new ConicalGradientBrush(new PointF(0.4f, 0.7f), new RainbowGradient(360, 0));
                 right.Brush.AddEffect(new MoveGradientEffect());
+                right.Brush.AddEffect(new FlashEffect { Attack = 2, Sustain = 1f, Release = 2, Interval = 1f });
 
                 //float halfKeyboardWidth = CueSDK.KeyboardSDK.DeviceRectangle.Width / 2f;
                 //ILedGroup left = new RectangleLedGroup(CueSDK.KeyboardSDK, new RectangleF(CueSDK.KeyboardSDK.DeviceRectangle.X, CueSDK.KeyboardSDK.DeviceRectangle.Y, halfKeyboardWidth, CueSDK.KeyboardSDK.DeviceRectangle.Height));

Native/_CUESDK.cs

@@ -53,6 +53,7 @@ namespace CUE.NET.Native
             _dllHandle = LoadLibrary(dllPath);
 
             _corsairSetLedsColorsPointer = (CorsairSetLedsColorsPointer)Marshal.GetDelegateForFunctionPointer(GetProcAddress(_dllHandle, "CorsairSetLedsColors"), typeof(CorsairSetLedsColorsPointer));
+            _corsairGetLedsColorsPointer = (CorsairGetLedsColorsPointer)Marshal.GetDelegateForFunctionPointer(GetProcAddress(_dllHandle, "CorsairGetLedsColors"), typeof(CorsairGetLedsColorsPointer));
             _corsairGetDeviceCountPointer = (CorsairGetDeviceCountPointer)Marshal.GetDelegateForFunctionPointer(GetProcAddress(_dllHandle, "CorsairGetDeviceCount"), typeof(CorsairGetDeviceCountPointer));
             _corsairGetDeviceInfoPointer = (CorsairGetDeviceInfoPointer)Marshal.GetDelegateForFunctionPointer(GetProcAddress(_dllHandle, "CorsairGetDeviceInfo"), typeof(CorsairGetDeviceInfoPointer));
             _corsairGetLedPositionsPointer = (CorsairGetLedPositionsPointer)Marshal.GetDelegateForFunctionPointer(GetProcAddress(_dllHandle, "CorsairGetLedPositions"), typeof(CorsairGetLedPositionsPointer));
@@ -89,6 +90,7 @@ namespace CUE.NET.Native
         #region Pointers
 
         private static CorsairSetLedsColorsPointer _corsairSetLedsColorsPointer;
+        private static CorsairGetLedsColorsPointer _corsairGetLedsColorsPointer;
         private static CorsairGetDeviceCountPointer _corsairGetDeviceCountPointer;
         private static CorsairGetDeviceInfoPointer _corsairGetDeviceInfoPointer;
         private static CorsairGetLedPositionsPointer _corsairGetLedPositionsPointer;
@@ -106,6 +108,9 @@ namespace CUE.NET.Native
         [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
         private delegate bool CorsairSetLedsColorsPointer(int size, IntPtr ledsColors);
 
+        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
+        private delegate bool CorsairGetLedsColorsPointer(int size, IntPtr ledsColors);
+
         [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
         private delegate int CorsairGetDeviceCountPointer();
 
@@ -145,6 +150,14 @@ namespace CUE.NET.Native
             return _corsairSetLedsColorsPointer(size, ledsColors);
         }
 
+        /// <summary>
+        /// CUE-SDK: get current color for the list of requested LEDs.
+        /// </summary>
+        internal static bool CorsairGetLedsColors(int size, IntPtr ledsColors)
+        {
+            return _corsairGetLedsColorsPointer(size, ledsColors);
+        }
+
         /// <summary>
         /// CUE-SDK: returns number of connected Corsair devices that support lighting control.
         /// </summary>