Possible fix for theme switching

app/ControlHelper.cs

@@ -6,37 +6,33 @@ public static class ControlHelper
 {
 
     static bool _invert = false;
+    static bool _resize = false;
+
     static float _scale = 1;
 
     static Color formBack;
     static Color backMain;
-    static Color backSecond;
     static Color foreMain;
     static Color foreAccent;
     static Color borderMain;
     static Color buttonMain;
 
-    public static void Adjust(RForm container, float baseScale = 2, bool invert = false)
+    public static void Adjust(RForm container, bool darkTheme = false, bool invert = false)
     {
-        _scale = GetDpiScale(container).Value / baseScale;
 
-        if (container.darkTheme)
+        if (darkTheme)
         {
             formBack = Color.FromArgb(255, 35, 35, 35);
             backMain = Color.FromArgb(255, 50, 50, 50);
-            backSecond = Color.FromArgb(255, 125, 125, 125);
-
             foreMain = Color.White;
-            foreAccent = Color.FromArgb(255,100, 100, 100);
+            foreAccent = Color.FromArgb(255, 100, 100, 100);
             borderMain = Color.FromArgb(255, 50, 50, 50);
-            buttonMain = Color.FromArgb(255, 100, 100, 100);
+            buttonMain = Color.FromArgb(255, 80, 80, 80);
         }
         else
         {
             formBack = SystemColors.Control;
             backMain = SystemColors.ControlLightLight;
-            backSecond = SystemColors.ButtonFace;
-
             foreMain = SystemColors.ControlText;
             foreAccent = Color.LightGray;
             borderMain = Color.LightGray;
@@ -51,6 +47,29 @@ public static class ControlHelper
         _invert = false;
     }
 
+    public static void Resize(RForm container, float baseScale = 2)
+    {
+        _scale = GetDpiScale(container).Value / baseScale;
+        ResizeControls(container.Controls);
+
+    }
+
+    private static void ResizeControls(Control.ControlCollection controls)
+    {
+        foreach (Control control in controls)
+        {
+            var button = control as RButton;
+            if (button != null && button.Image is not null)
+                button.Image = ResizeImage(button.Image);
+
+            var pictureBox = control as PictureBox;
+            if (pictureBox != null && pictureBox.BackgroundImage is not null)
+                pictureBox.BackgroundImage = ResizeImage(pictureBox.BackgroundImage);
+
+            ResizeControls(control.Controls);
+        }
+    }
+
 
     private static void AdjustControls(Control.ControlCollection controls)
     {
@@ -59,7 +78,7 @@ public static class ControlHelper
             var button = control as RButton;
             if (button != null)
             {
-                button.BackColor = backMain;
+                button.BackColor = button.Secondary ? buttonMain : backMain;
                 button.ForeColor = foreMain;
 
                 button.FlatStyle = FlatStyle.Flat;
@@ -70,11 +89,9 @@ public static class ControlHelper
             }
 
             var pictureBox = control as PictureBox;
-            if (pictureBox != null)
-            {
-                if (pictureBox.BackgroundImage is not null)
-                    pictureBox.BackgroundImage = AdjustImage(pictureBox.BackgroundImage);
-            }
+            if (pictureBox != null && pictureBox.BackgroundImage is not null)
+                pictureBox.BackgroundImage = AdjustImage(pictureBox.BackgroundImage);
+
 
             var combo = control as RComboBox;
             if (combo != null)
@@ -129,7 +146,7 @@ public static class ControlHelper
         });
     }
 
-    private static Image AdjustImage(Image image)
+    private static Image ResizeImage(Image image)
     {
         var newSize = new Size((int)(image.Width * _scale), (int)(image.Height * _scale));
         var pic = new Bitmap(newSize.Width, newSize.Height);
@@ -139,6 +156,12 @@ public static class ControlHelper
             g.InterpolationMode = InterpolationMode.HighQualityBicubic;
             g.DrawImage(image, new Rectangle(new Point(), newSize));
         }
+        return pic;
+    }
+
+    private static Image AdjustImage(Image image)
+    {
+        var pic = new Bitmap(image);
 
         if (_invert)
         {
@@ -153,6 +176,7 @@ public static class ControlHelper
         }
 
         return pic;
+
     }
 
 }

app/CustomControls.cs

@@ -18,25 +18,29 @@ namespace CustomControls
         [DllImport("DwmApi")] //System.Runtime.InteropServices
         private static extern int DwmSetWindowAttribute(IntPtr hwnd, int attr, int[] attrValue, int attrSize);
 
-        public bool darkTheme;
-        public bool invert = false;
+        public bool darkTheme = false;
 
-        public void InitTheme()
+        public void InitTheme(bool setDPI = true)
         {
             bool newDarkTheme = CheckSystemDarkModeStatus();
-            invert = (darkTheme != newDarkTheme);
+            bool changed = (darkTheme != newDarkTheme);
             darkTheme = newDarkTheme;
 
-            ControlHelper.Adjust(this, 2, invert);
-            try
-            {
-                DwmSetWindowAttribute(this.Handle, 20, new[] { darkTheme ? 1 : 0 }, 4);
-            } catch { }
+            if (setDPI)
+                ControlHelper.Resize(this);
+
+            DwmSetWindowAttribute(this.Handle, 20, new[] { darkTheme ? 1 : 0 }, 4);
+            ControlHelper.Adjust(this, darkTheme, changed);
         }
 
     }
 
 
+    public class RTrackBar : TrackBar
+    {
+
+    }
+
     public class RComboBox : ComboBox
     {
         private Color borderColor = Color.Gray;
@@ -224,10 +228,10 @@ namespace CustomControls
         private int borderRadius = 5;
         
         private bool activated = false;
+        private bool secondary = false;
 
         private Color borderColor = Color.Transparent;
 
-
         public Color BorderColor
         {
             get { return borderColor; }
@@ -250,6 +254,14 @@ namespace CustomControls
             }
         }
 
+        public bool Secondary
+        {
+            get { return secondary; }
+            set
+            {
+                secondary = value;
+            }
+        }
 
         public RButton()
         {

app/Fans.Designer.cs

@@ -31,10 +31,10 @@ namespace GHelper
         /// </summary>
         private void InitializeComponent()
         {
-            ChartArea chartArea3 = new ChartArea();
-            Title title3 = new Title();
-            ChartArea chartArea4 = new ChartArea();
-            Title title4 = new Title();
+            ChartArea chartArea1 = new ChartArea();
+            Title title1 = new Title();
+            ChartArea chartArea2 = new ChartArea();
+            Title title2 = new Title();
             panelFans = new Panel();
             labelTip = new Label();
             labelBoost = new Label();
@@ -160,8 +160,8 @@ namespace GHelper
             // 
             // chartGPU
             // 
-            chartArea3.Name = "ChartArea1";
-            chartGPU.ChartAreas.Add(chartArea3);
+            chartArea1.Name = "ChartArea1";
+            chartGPU.ChartAreas.Add(chartArea1);
             chartGPU.Dock = DockStyle.Fill;
             chartGPU.Location = new Point(2, 506);
             chartGPU.Margin = new Padding(2, 10, 2, 10);
@@ -169,13 +169,13 @@ namespace GHelper
             chartGPU.Size = new Size(760, 476);
             chartGPU.TabIndex = 17;
             chartGPU.Text = "chart1";
-            title3.Name = "Title1";
-            chartGPU.Titles.Add(title3);
+            title1.Name = "Title1";
+            chartGPU.Titles.Add(title1);
             // 
             // chartCPU
             // 
-            chartArea4.Name = "ChartArea1";
-            chartCPU.ChartAreas.Add(chartArea4);
+            chartArea2.Name = "ChartArea1";
+            chartCPU.ChartAreas.Add(chartArea2);
             chartCPU.Dock = DockStyle.Fill;
             chartCPU.Location = new Point(2, 10);
             chartCPU.Margin = new Padding(2, 10, 2, 10);
@@ -183,8 +183,8 @@ namespace GHelper
             chartCPU.Size = new Size(760, 476);
             chartCPU.TabIndex = 14;
             chartCPU.Text = "chartCPU";
-            title4.Name = "Title1";
-            chartCPU.Titles.Add(title4);
+            title2.Name = "Title1";
+            chartCPU.Titles.Add(title2);
             // 
             // labelFans
             // 
@@ -219,6 +219,7 @@ namespace GHelper
             buttonReset.Location = new Point(30, 1081);
             buttonReset.Margin = new Padding(4, 2, 4, 2);
             buttonReset.Name = "buttonReset";
+            buttonReset.Secondary = true;
             buttonReset.Size = new Size(232, 44);
             buttonReset.TabIndex = 15;
             buttonReset.Text = "Factory Defaults";
@@ -234,6 +235,7 @@ namespace GHelper
             buttonApply.Location = new Point(542, 1081);
             buttonApply.Margin = new Padding(4, 2, 4, 2);
             buttonApply.Name = "buttonApply";
+            buttonApply.Secondary = true;
             buttonApply.Size = new Size(248, 44);
             buttonApply.TabIndex = 14;
             buttonApply.Text = "Apply Fan Curve";
@@ -303,6 +305,7 @@ namespace GHelper
             buttonApplyPower.Location = new Point(20, 1081);
             buttonApplyPower.Margin = new Padding(4, 2, 4, 2);
             buttonApplyPower.Name = "buttonApplyPower";
+            buttonApplyPower.Secondary = true;
             buttonApplyPower.Size = new Size(324, 44);
             buttonApplyPower.TabIndex = 24;
             buttonApplyPower.Text = "Apply Power Limits";

app/Program.cs

@@ -49,7 +49,8 @@ namespace GHelper
 
             }
 
-            SystemEvents.UserPreferenceChanged += OnUserPreferenceChanged;
+            SystemEvents.UserPreferenceChanged += new
+                 UserPreferenceChangedEventHandler(SystemEvents_UserPreferenceChanged);
 
             Application.EnableVisualStyles();
 
@@ -81,7 +82,7 @@ namespace GHelper
         }
 
 
-        static void OnUserPreferenceChanged(object sender, UserPreferenceChangedEventArgs e)
+        static void SystemEvents_UserPreferenceChanged(object sender, UserPreferenceChangedEventArgs e)
         {
 
             if (Math.Abs(DateTimeOffset.Now.ToUnixTimeMilliseconds() - lastTheme) < 2000) return;
@@ -91,13 +92,13 @@ namespace GHelper
             {
                 case UserPreferenceCategory.General:
                     Debug.WriteLine("Theme Changed");
-                    settingsForm.InitTheme();
+                    settingsForm.InitTheme(false);
 
                     if (settingsForm.fans is not null && settingsForm.fans.Text != "")
-                        settingsForm.fans.InitTheme();
+                        settingsForm.fans.InitTheme(false);
 
                     if (settingsForm.keyb is not null && settingsForm.keyb.Text != "")
-                        settingsForm.keyb.InitTheme();
+                        settingsForm.keyb.InitTheme(false);
 
                     break;
             }

app/Settings.Designer.cs

@@ -190,6 +190,7 @@ namespace GHelper
             buttonMatrix.TabIndex = 43;
             buttonMatrix.Text = "Picture / Gif";
             buttonMatrix.UseVisualStyleBackColor = false;
+            buttonMatrix.Secondary = true;
             // 
             // comboMatrixRunning
             // 
@@ -334,6 +335,7 @@ namespace GHelper
             buttonQuit.TabIndex = 18;
             buttonQuit.Text = "Quit";
             buttonQuit.UseVisualStyleBackColor = false;
+            buttonQuit.Secondary = true;
             // 
             // checkStartup
             // 
@@ -498,6 +500,7 @@ namespace GHelper
             buttonFans.Text = "Fans + Power";
             buttonFans.TextImageRelation = TextImageRelation.ImageAboveText;
             buttonFans.UseVisualStyleBackColor = false;
+            buttonFans.Secondary = true;
             // 
             // panelGPU
             // 
@@ -833,6 +836,8 @@ namespace GHelper
             buttonKeyboard.TabIndex = 37;
             buttonKeyboard.Text = "Extra";
             buttonKeyboard.UseVisualStyleBackColor = false;
+            buttonKeyboard.Secondary = true;
+
             // 
             // comboKeyboard
             //