Added dark theme support

Author: Zaczero

DNSChanger/DNSChangeDetectedForm.cs

@@ -2,6 +2,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Drawing;
 using System.Linq;
 using System.Windows.Forms;
 
@@ -15,6 +16,30 @@ public DNSChangeDetectedForm()
 			Text = GlobalVars.Name + @" DNS Change Detected";
 			Icon = Properties.Resources.Icon;
 
+			if (Utilities.IsSystemDarkMode())
+			{
+				BackColor = Color.FromArgb(0x20, 0x20, 0x20);
+				ForeColor = Color.FromArgb(0xF0, 0xF0, 0xF0);
+
+				foreach (Control control in Controls)
+				{
+					if (control is Button)
+					{
+						var btn = control as Button;
+						btn.FlatStyle = FlatStyle.Flat;
+						btn.UseVisualStyleBackColor = false;
+					}
+
+					if (control is TextBox)
+					{
+						var tb = control as TextBox;
+						tb.BackColor = Color.FromArgb(0x30, 0x30, 0x30);
+						tb.ForeColor = Color.FromArgb(0xF0, 0xF0, 0xF0);
+						tb.BorderStyle = BorderStyle.FixedSingle;
+					}
+				}
+			}
+
 
 			var @interface = DNSValidate.GetInterfaceToValidate().Value;
 			interfaceTb.Text = @interface.Name;

DNSChanger/InterfaceSelectionForm.Designer.cs

@@ -1,5 +1,6 @@
 using DNSChanger.Structs;
 using System;
+using System.Drawing;
 using System.Windows.Forms;
 
 namespace DNSChanger
@@ -15,6 +16,22 @@ public InterfaceSelectionForm()
 			Text = GlobalVars.Name + @" Interface Selector";
 			Icon = Properties.Resources.Icon;
 
+			if (Utilities.IsSystemDarkMode())
+			{
+				BackColor = Color.FromArgb(0x20, 0x20, 0x20);
+				ForeColor = Color.FromArgb(0xF0, 0xF0, 0xF0);
+
+				foreach (Control control in Controls)
+				{
+					if (control is Button)
+					{
+						var btn = control as Button;
+						btn.FlatStyle = FlatStyle.Flat;
+						btn.UseVisualStyleBackColor = false;
+					}
+				}
+			}
+
 
 			FillInterfaces();
 		}

DNSChanger/InterfaceSelectionForm.cs

@@ -21,6 +21,30 @@ public MainForm()
 			Text = GlobalVars.Name;
 			Icon = Properties.Resources.Icon;
 
+			if (Utilities.IsSystemDarkMode())
+			{
+				BackColor = Color.FromArgb(0x20, 0x20, 0x20);
+				ForeColor = Color.FromArgb(0xF0, 0xF0, 0xF0);
+
+				foreach (Control control in Controls)
+				{
+					if (control is Button)
+					{
+						var btn = control as Button;
+						btn.FlatStyle = FlatStyle.Flat;
+						btn.UseVisualStyleBackColor = false;
+					}
+
+					if (control is TextBox)
+					{
+						var tb = control as TextBox;
+						tb.BackColor = Color.FromArgb(0x30, 0x30, 0x30);
+						tb.ForeColor = Color.FromArgb(0xF0, 0xF0, 0xF0);
+						tb.BorderStyle = BorderStyle.FixedSingle;
+					}
+				}
+			}
+
 
 			_interfaceToValidate = DNSValidate.GetInterfaceToValidate();
 			if (_interfaceToValidate.HasValue)
@@ -308,16 +332,26 @@ private void resetBtn_Click(object sender, EventArgs e)
 		private void ButtonSuccessAnimation(object sender)
 		{
 			var btn = sender as Button;
-			btn.BackColor = Color.LightGreen;
+			var defaultColor = btn.BackColor;
+
+			if (Utilities.IsSystemDarkMode())
+			{
+				btn.BackColor = Color.FromArgb(0x10, 0x50, 0x10);
+			}
+			else
+			{
+				btn.BackColor = Color.LightGreen;
+			}
 
 			var thr = new Thread(() =>
 			{
 				Thread.Sleep(600);
-				btn.BackColor = SystemColors.Control;
+				btn.BackColor = defaultColor;
 			}) {IsBackground = true};
 			thr.Start();
 		}
 
+
 		private void validateCb_CheckedChanged(object sender, EventArgs e)
 		{
 			if (validateCb.Checked)

DNSChanger/MainForm.Designer.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Diagnostics;
 using System.Linq;
-using System.Security.Principal;
 using System.Windows.Forms;
 
 namespace DNSChanger
@@ -30,6 +29,7 @@ public static void Main(string[] args)
 				}
 				catch (Exception ex)
 				{ }
+
 				return;
 			}
 

DNSChanger/MainForm.cs

@@ -2,6 +2,7 @@
 using System.Linq;
 using System.Management;
 using System.Security.Principal;
+using Microsoft.Win32;
 
 namespace DNSChanger
 {
@@ -28,7 +29,18 @@ public static string GetCommandLine(this Process process)
 			{
 				return objects.Cast<ManagementBaseObject>().SingleOrDefault()?["CommandLine"]?.ToString();
 			}
+		}
+
+		private static bool? _isSystemDarkMode;
+		public static bool IsSystemDarkMode()
+		{
+			if (_isSystemDarkMode.HasValue) return _isSystemDarkMode.Value;
+
+			var key = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Themes\Personalize", false);
+			if (key == null) return false;
 
+			var val = (int) key.GetValue("AppsUseLightTheme", 1);
+			return (_isSystemDarkMode = val == 0).Value;
 		}
 	}
 }

DNSChanger/Program.cs

@@ -16,7 +16,7 @@
             Remove this element if your application requires this virtualization for backwards
             compatibility.
         -->
-        <requestedExecutionLevel level="asInvoker" uiAccess="false" />
+        <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
       </requestedPrivileges>
     </security>
   </trustInfo>