* Ensure that KryptonForm properly supports RTL/LTR (V105-LTS)

Documents/Changelog/Changelog.md

@@ -4,6 +4,7 @@
 
 ## 2026-04-20 - Build 2604 (Version 105-LTS - Patch 2) - April 2026
 
+* Resolved [#2103](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2103), Ensure that `KryptonForm` properly supports RTL/LTR
 * Resolved [#2914](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2914), White bar is shown in a `KryptonForm` Sizable without buttons and text
 * Resolved [#2910](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2910), `KryptonComboBox` override Font property causes form designer error
 * Resolved [#2902](https://github.com/Krypton-Suite/Standard-Toolkit/issues/2902), NuGet Version Discrepancy

Source/Krypton Components/Krypton.Toolkit/ButtonSpec/ButtonSpecManagerBase.cs

@@ -853,7 +853,16 @@ private int GetTargetDockerIndex(HeaderLocation location)
         return -1;
     }
 
-    private ViewDockStyle GetDockStyle(ButtonSpec spec) => spec.GetEdge(_redirector) == RelativeEdgeAlign.Near ? ViewDockStyle.Left : ViewDockStyle.Right;
+    private ViewDockStyle GetDockStyle(ButtonSpec spec)
+    {
+        var edge = spec.GetEdge(_redirector);
+
+        var isRtl = Control is Form form && form.RightToLeft == RightToLeft.Yes && form.RightToLeftLayout;
+
+        // In RTL mode with RightToLeftLayout enabled, reverse the dock style
+        return isRtl ? edge == RelativeEdgeAlign.Near ? ViewDockStyle.Right : ViewDockStyle.Left :
+            edge == RelativeEdgeAlign.Near ? ViewDockStyle.Left : ViewDockStyle.Right;
+    }
 
     private VisualOrientation CalculateOrientation(VisualOrientation viewOrientation,
         ButtonOrientation buttonOrientation) => buttonOrientation switch

Source/Krypton Components/Krypton.Toolkit/Controls Toolkit/KryptonForm.cs

@@ -39,20 +39,80 @@ public FormPaletteRedirect(PaletteBase palette, KryptonForm kryptonForm)
             _kryptonForm = kryptonForm;
         }
 
-        public override PaletteRelativeAlign GetContentShortTextH(PaletteContentStyle style, PaletteState state) => style switch
+        public override PaletteRelativeAlign GetContentShortTextH(PaletteContentStyle style, PaletteState state)
         {
-            PaletteContentStyle.HeaderForm
+            if (style is PaletteContentStyle.HeaderForm
                 or PaletteContentStyle.HeaderPrimary
                 or PaletteContentStyle.HeaderDockInactive
                 or PaletteContentStyle.HeaderDockActive
                 or PaletteContentStyle.HeaderSecondary
                 or PaletteContentStyle.HeaderCustom1
                 or PaletteContentStyle.HeaderCustom2
-                or PaletteContentStyle.HeaderCustom3 => _kryptonForm._formTitleAlign != PaletteRelativeAlign.Inherit
+                or PaletteContentStyle.HeaderCustom3)
+            {
+                // In RTL mode with RightToLeftLayout enabled, position title on the right (Far)
+                // The content layout system will position text before image when both are Far,
+                // so the order is: [Buttons] [Title] [Icon]
+                if (_kryptonForm.RightToLeft == RightToLeft.Yes && _kryptonForm.RightToLeftLayout)
+                {
+                    // Title should be Far (right side) so it appears on the right before the icon
+                    return PaletteRelativeAlign.Far;
+                }
+
+                // Use custom title align if set, otherwise use base
+                return _kryptonForm._formTitleAlign != PaletteRelativeAlign.Inherit
                     ? _kryptonForm._formTitleAlign
-                    : base.GetContentShortTextH(style, state),
-            _ => base.GetContentShortTextH(style, state)
-        };
+                    : base.GetContentShortTextH(style, state);
+            }
+
+            return base.GetContentShortTextH(style, state);
+        }
+
+        public override PaletteRelativeAlign GetContentLongTextH(PaletteContentStyle style, PaletteState state)
+        {
+            // Handle header styles
+            if (style is PaletteContentStyle.HeaderForm
+                or PaletteContentStyle.HeaderPrimary
+                or PaletteContentStyle.HeaderDockInactive
+                or PaletteContentStyle.HeaderDockActive
+                or PaletteContentStyle.HeaderSecondary
+                or PaletteContentStyle.HeaderCustom1
+                or PaletteContentStyle.HeaderCustom2
+                or PaletteContentStyle.HeaderCustom3)
+            {
+                // In RTL mode with RightToLeftLayout enabled, position TextExtra on the left (Near)
+                // so it appears after the control box buttons: [Buttons] [TextExtra] [Title] [Icon]
+                if (_kryptonForm.RightToLeft == RightToLeft.Yes && _kryptonForm.RightToLeftLayout)
+                {
+                    // TextExtra should be Near (left side) so it appears after the buttons
+                    return PaletteRelativeAlign.Near;
+                }
+            }
+
+            return base.GetContentLongTextH(style, state);
+        }
+
+        public override PaletteRelativeAlign GetContentImageH(PaletteContentStyle style, PaletteState state)
+        {
+            // In RTL mode with RightToLeftLayout enabled, position icon on the right (Far)
+            if (_kryptonForm.RightToLeft == RightToLeft.Yes && _kryptonForm.RightToLeftLayout)
+            {
+                return style switch
+                {
+                    PaletteContentStyle.HeaderForm
+                        or PaletteContentStyle.HeaderPrimary
+                        or PaletteContentStyle.HeaderDockInactive
+                        or PaletteContentStyle.HeaderDockActive
+                        or PaletteContentStyle.HeaderSecondary
+                        or PaletteContentStyle.HeaderCustom1
+                        or PaletteContentStyle.HeaderCustom2
+                        or PaletteContentStyle.HeaderCustom3 => PaletteRelativeAlign.Far,
+                    _ => base.GetContentImageH(style, state)
+                };
+            }
+
+            return base.GetContentImageH(style, state);
+        }
     }
 
     /// <summary>
@@ -1216,7 +1276,29 @@ public KryptonFormTitleStyle TitleStyle
             UpdateTitleStyle(value);
         }
     }
-
+
+    /// <summary>
+    /// Gets and sets the RightToLeft property.
+    /// </summary>
+    [Browsable(true)]
+    [DefaultValue(RightToLeft.No)]
+    [EditorBrowsable(EditorBrowsableState.Always)]
+    [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
+    public override RightToLeft RightToLeft
+    {
+        get => base.RightToLeft;
+
+        set
+        {
+            if (base.RightToLeft != value)
+            {
+                base.RightToLeft = value;
+
+                OnRightToLeftChanged(EventArgs.Empty);
+            }
+        }
+    }
+
     /// <summary>
     /// Gets or sets a value indicating whether the form has a control box.
     /// </summary>
@@ -1544,6 +1626,24 @@ protected override void OnResizeEnd(EventArgs e)
         InvalidateNonClient();
     }
 
+    /// <inheritdoc />
+    protected override void OnRightToLeftChanged(EventArgs e)
+    {
+        base.OnRightToLeftChanged(e);
+
+        // Recreate buttons when RTL changes to update their positions
+        _buttonManager?.RecreateButtons();
+    }
+
+    /// <inheritdoc />
+    protected override void OnRightToLeftLayoutChanged(EventArgs e)
+    {
+        base.OnRightToLeftLayoutChanged(e);
+
+        // Recreate buttons when RTL changes to update their positions
+        _buttonManager?.RecreateButtons();
+    }
+
     /// <summary>
     /// When border style changes via property, force non-client repaint so grippie updates immediately.
     /// </summary>