The Problem (Q-score 13, ranked #37th of 95 in the VBA Core archive)
The scenario as originally posted in 2013
The Options dialog in Word 2010 implements the category selector via set of white “toggle” buttons that become orange when clicked (selected).

How would one re-implement such behavior in Delphi? A conformance with the current Windows theme is required (i.e. it must be possible to specify the button color as clWindow, not clWhite).
EDIT: To clarify – I only have problems with the category selector on the left. Everything else is fairly simple.
Why community consensus is tight on this one
Across 95 VBA Core entries in the archive, the accepted answer here holds niche answer (below median) status — meaning voters are unusually aligned on the right fix.
The Verified Solution — niche answer (below median) (+8)
172-line VBA Core pattern (copy-ready)
You could use the TButtonGroup component.
Using VCL Styles is by far the easiest solution but as like you said, using styles in XE2 is quite uncomfortable, in my opinion this feature only really became viable in XE3.
Per your request to use the default painting methods I’m submitting my solution,
source code of the project available here.
This project requires an image, the image is zipped together with the project.
Compiled and tested in XE4.
type
TButtonGroup = class(Vcl.ButtonGroup.TButtonGroup)
protected
procedure Paint; override;
end;
TForm1 = class(TForm)
ButtonGroup1: TButtonGroup;
Panel1: TPanel;
procedure ButtonGroup1DrawButton(Sender: TObject; Index: Integer;
Canvas: TCanvas; Rect: TRect; State: TButtonDrawState);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
MBitmap : TBitmap;
implementation
{$R *.dfm}
procedure TButtonGroup.Paint;
var
R : TRect;
begin
inherited;
R := GetClientRect;
R.Top := Self.Items.Count * Self.ButtonHeight;
{Remove the clBtnFace background default Painting}
Self.Canvas.FillRect(R);
end;
procedure TForm1.ButtonGroup1DrawButton(Sender: TObject; Index: Integer;
Canvas: TCanvas; Rect: TRect; State: TButtonDrawState);
var
TextLeft, TextTop: Integer;
RectHeight: Integer;
ImgTop: Integer;
Text : String;
TextOffset: Integer;
ButtonItem: TGrpButtonItem;
InsertIndication: TRect;
DrawSkipLine : TRect;
TextRect: TRect;
OrgRect: TRect;
begin
//OrgRect := Rect; //icon
Canvas.Font := TButtonGroup(Sender).Font;
if bdsSelected in State then begin
Canvas.CopyRect(Rect,MBitmap.Canvas,
System.Classes.Rect(0, 0, MBitmap.Width, MBitmap.Height));
Canvas.Brush.Color := RGB(255,228,138);
end
else if bdsHot in State then
begin
Canvas.Brush.Color := RGB(194,221,244);
Canvas.Font.Color := clBlack;
end
else
Canvas.Brush.color := clWhite;
if not (bdsSelected in State)
then
Canvas.FillRect(Rect);
InflateRect(Rect, -2, -1);
{ Compute the text location }
TextLeft := Rect.Left + 4;
RectHeight := Rect.Bottom - Rect.Top;
TextTop := Rect.Top + (RectHeight - Canvas.TextHeight('Wg')) div 2; { Do not localize }
if TextTop < Rect.Top then
TextTop := Rect.Top;
if bdsDown in State then
begin
Inc(TextTop);
Inc(TextLeft);
end;
ButtonItem := TButtonGroup(Sender).Items.Items[Index];
TextOffset := 0;
{ Draw the icon - if you need to display icons}
// if (FImages <> nil) and (ButtonItem.ImageIndex > -1) and
// (ButtonItem.ImageIndex < FImages.Count) then
// begin
// ImgTop := Rect.Top + (RectHeight - FImages.Height) div 2;
// if ImgTop < Rect.Top then
// ImgTop := Rect.Top;
// if bdsDown in State then
// Inc(ImgTop);
// FImages.Draw(Canvas, TextLeft - 1, ImgTop, ButtonItem.ImageIndex);
// TextOffset := FImages.Width + 1;
// end;
{ Show insert indications }
if [bdsInsertLeft, bdsInsertTop, bdsInsertRight, bdsInsertBottom] * State <> [] then
begin
Canvas.Brush.Color := clSkyBlue;
InsertIndication := Rect;
if bdsInsertLeft in State then
begin
Dec(InsertIndication.Left, 2);
InsertIndication.Right := InsertIndication.Left + 2;
end
else if bdsInsertTop in State then
begin
Dec(InsertIndication.Top);
InsertIndication.Bottom := InsertIndication.Top + 2;
end
else if bdsInsertRight in State then
begin
Inc(InsertIndication.Right, 2);
InsertIndication.Left := InsertIndication.Right - 2;
end
else if bdsInsertBottom in State then
begin
Inc(InsertIndication.Bottom);
InsertIndication.Top := InsertIndication.Bottom - 2;
end;
Canvas.FillRect(InsertIndication);
//Canvas.Brush.Color := FillColor;
end;
if gboShowCaptions in TButtonGroup(Sender).ButtonOptions then
begin
{ Avoid clipping the image }
Inc(TextLeft, TextOffset);
TextRect.Left := TextLeft;
TextRect.Right := Rect.Right - 1;
TextRect.Top := TextTop;
TextRect.Bottom := Rect.Bottom -1;
Text := ButtonItem.Caption;
Canvas.TextRect(TextRect, Text, [tfEndEllipsis]);
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
MBitmap := TBitmap.Create;
try
MBitmap.LoadFromFile('bg.bmp');
except
on E : Exception do
ShowMessage(E.ClassName+' error raised, with message : '+E.Message);
end;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
MBitmap.Free;
end;
DFM :
object Form1: TForm1
Left = 0
Top = 0
Caption = 'Form1'
ClientHeight = 398
ClientWidth = 287
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'Tahoma'
Font.Style = []
OldCreateOrder = False
Position = poScreenCenter
StyleElements = []
OnCreate = FormCreate
OnDestroy = FormDestroy
PixelsPerInch = 96
TextHeight = 13
object Panel1: TPanel
AlignWithMargins = True
Left = 5
Top = 5
Width = 137
Height = 388
Margins.Left = 5
Margins.Top = 5
Margins.Right = 5
Margins.Bottom = 5
Align = alLeft
BevelKind = bkFlat
BevelOuter = bvNone
Color = clWhite
ParentBackground = False
TabOrder = 0
StyleElements = [seFont]
object ButtonGroup1: TButtonGroup
AlignWithMargins = True
Left = 4
Top = 4
Width = 125
Height = 378
Margins.Left = 4
Margins.Top = 4
Margins.Right = 4
Margins.Bottom = 2
Align = alClient
BevelInner = bvNone
BevelOuter = bvNone
BorderStyle = bsNone
ButtonOptions = [gboFullSize, gboGroupStyle, gboShowCaptions]
DoubleBuffered = True
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'Segoe UI'
Font.Style = []
Items = <
item
Caption = 'General'
end
item
Caption = 'Display'
end
item
Caption = 'Proofing'
end
item
Caption = 'Save'
end
item
Caption = 'Language'
end
item
Caption = 'Advanced'
end>
ParentDoubleBuffered = False
TabOrder = 0
OnDrawButton = ButtonGroup1DrawButton
end
end
end
There is a Panel container in there hosting the TButtonGroup, it is not needed, simply added for visual improvement.
If you want to change the color of the selection at runtime then I suggest using efg’s Hue/Saturation method to change the Hue of the image, that way the color panel remains but the color will change.
To gain support for VCL Styles simply detach the ButtonGroup1DrawButton Event from the TButtonGroup component, that way the default DrawButton Event can kick in which adds support for that.
When to Use It — classic (2013–2016)
Ranked #37th in its category — specialized fit
This pattern sits in the 93% tail relative to the top answer. Reach for it when your scenario closely matches the question title; otherwise browse the VBA Core archive for a higher-consensus alternative.
What changed between 2013 and 2026
The answer is 13 years old. The VBA Core object model has been stable across Office 2013, 2016, 2019, 2021, 365, and 2024/2026 LTSC, so the pattern still compiles. Changes that might affect you: 64-bit API declarations (use PtrSafe), blocked macros in downloaded files (Mark-of-the-Web), and the shift toward Office Scripts for web-first workflows.