Add dark theme

App.config

@@ -16,6 +16,9 @@
         <setting name="CopyToClipboard" serializeAs="String">
             <value>True</value>
         </setting>
+        <setting name="DarkTheme" serializeAs="String">
+            <value>False</value>
+        </setting>
     </Dropper.Properties.Settings>
   </userSettings>
   <appSettings>

Dropper.csproj

@@ -95,6 +95,9 @@
     <Compile Include="Form1.Designer.cs">
       <DependentUpon>Form1.cs</DependentUpon>
     </Compile>
+    <Compile Include="Form1.ThemeChanger.cs">
+      <SubType>Form</SubType>
+    </Compile>
     <Compile Include="KeyModifier.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
@@ -143,7 +146,7 @@
   <ItemGroup>
     <BootstrapperPackage Include=".NETFramework,Version=v4.8">
       <Visible>False</Visible>
-      <ProductName>Microsoft .NET Framework 4.8 %28x86 and x64%29</ProductName>
+      <ProductName>Microsoft .NET Framework 4.8 %28x86 и x64%29</ProductName>
       <Install>true</Install>
     </BootstrapperPackage>
     <BootstrapperPackage Include="Microsoft.Net.Framework.3.5.SP1">

Form1.ThemeChanger.cs

@@ -0,0 +1,40 @@
+using System.Drawing;
+
+namespace Dropper
+{
+    partial class Form1
+    {
+        private Color _lightBG = Color.WhiteSmoke;
+        private Color _lightFG = Color.FromArgb(23, 23, 23);
+
+        private Color _darkBG = Color.FromArgb(23, 23, 23); //#2b2b2b
+        private Color _darkFG = Color.FromArgb(230, 230, 230); //#f1f1f1f
+
+        public void SetDarkTheme(bool enable) 
+        {
+            if (enable)
+                SetColors(_darkBG, _darkFG);
+            else
+                SetColors(_lightBG, _lightFG);
+        }
+
+        private void SetColors(Color bg, Color fg)
+        {
+            this.BackColor = bg;
+            this.ForeColor = fg;
+
+            panel1.BackColor = bg;
+            CloseButton.BackColor = bg;
+            CloseButton.ForeColor = fg;
+            TitleBar.BackColor = bg;
+            TitleLable.BackColor = bg;
+            TitleLable.ForeColor = fg;
+
+            foreach(var item in textBoxes)
+            {
+                item.BackColor = bg;
+                item.ForeColor = fg;
+            }
+        }
+    }
+}

Form1.cs

@@ -18,17 +18,12 @@ public partial class Form1 : Form
         public Form1()
         {
             InitializeComponent();
+            LoadSettings();
             TrayMenuInit();
             TitleInit();
+            InteropServicesInit();
 
-            Region = System.Drawing.Region.FromHrgn(Utils.CreateRoundRectRgn(0, 0, Width, Height, 15, 15));
-
-            LoadSettings();
-
-            int id = 0;
-            Utils.RegisterHotKey(Handle, id, (int)KeyModifier.Alt + (int)KeyModifier.Shift, Keys.C.GetHashCode());
-            id = 1;
-            Utils.RegisterHotKey(Handle, id, (int)KeyModifier.Alt + (int)KeyModifier.Shift, Keys.H.GetHashCode());
+            SetDarkTheme(DarkThemeCheck.Checked);
         }
 
         protected override void WndProc(ref Message m)
@@ -67,6 +62,13 @@ private void VisualStateUpdate()
                 Hide();
         }
 
+        private void LoadSettings()
+        {
+            this.CollapseCheck.Checked = Properties.Settings.Default.CollapseCheck;
+            this.CopyCheck.Checked = Properties.Settings.Default.CopyToClipboard;
+            this.DarkThemeCheck.Checked = Properties.Settings.Default.DarkTheme;
+        }
+
         #region Notify menu button methods
 
         private void MenuShowHistory_Click(object sender, EventArgs e)
@@ -98,13 +100,13 @@ private void SettingsChanged(object sender, EventArgs e)
                     Properties.Settings.Default.CopyToClipboard = this.CopyCheck.Checked;
                     Properties.Settings.Default.Save();
                     break;
+                case "DarkThemeCheck":
+                    Properties.Settings.Default.DarkTheme = this.DarkThemeCheck.Checked;
+                    Properties.Settings.Default.Save();
+                    SetDarkTheme(DarkThemeCheck.Checked);
+                    break;
             }
         }
-        private void LoadSettings()
-        {
-            this.CollapseCheck.Checked = Properties.Settings.Default.CollapseCheck;
-            this.CopyCheck.Checked = Properties.Settings.Default.CopyToClipboard;
-        }
 
         #endregion
         #region Title bar methods
@@ -135,7 +137,8 @@ private void TitleMouseDown(object sender, MouseEventArgs e)
             _startPoint = e.Location;
             _isDrag = true;
         }
-        #endregion
+
+        #endregion //==============================================
 
         private void GetButtonColor(object sender, EventArgs e)
         {

Properties/Settings.settings

@@ -8,5 +8,8 @@
     <Setting Name="CopyToClipboard" Type="System.Boolean" Scope="User">
       <Value Profile="(Default)">True</Value>
     </Setting>
+    <Setting Name="DarkTheme" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">False</Value>
+    </Setting>
   </Settings>
 </SettingsFile>