平滑SpeedButton

    // DrawBorder
    case FState of
      bsUp:
        if FMouseInControl then
          Frame3D(memoryBitmap.canvas, buttonRect, FColorHighlight, FColorShadow, 1)
        else
          Frame3D(memoryBitmap.canvas, buttonRect, FBorderColor, FBorderColor, 1);
      bsDown, bsExclusive:
        Frame3D(memoryBitmap.canvas, buttonRect, FColorShadow, FColorHighlight, 1);
      bsDisabled:
        Frame3D(memoryBitmap.canvas, buttonRect, FBorderColor, FBorderColor, 1);
    end;

    // DrawBackground
    case FState of
      bsUp:
        if FMouseInControl then
          memoryBitmap.Canvas.Brush.Color := FFocusedColor
        else
          memoryBitmap.Canvas.Brush.Color := Self.Color;
      bsDown:
        memoryBitmap.Canvas.Brush.Color := FDownColor;
      bsExclusive:
        if FMouseInControl then
          memoryBitmap.Canvas.Brush.Color := FFocusedColor
        else
          memoryBitmap.Canvas.Brush.Color := FDownColor;
      bsDisabled:
        memoryBitmap.Canvas.Brush.Color := Self.Color;
    end;
    memoryBitmap.Canvas.FillRect(buttonRect);

    // DrawGlyph
    if not FGlyph.Empty then
    begin
      tempGlyph := TBitmap.Create;
      case FNumGlyphs of
        1: case FState of
             bsUp:        sourceRect := Rect(0, 0, FGlyph.Width, FGlyph.Height);
             bsDisabled:  sourceRect := Rect(0, 0, FGlyph.Width, FGlyph.Height);
             bsDown:      sourceRect := Rect(0, 0, FGlyph.Width, FGlyph.Height);
             bsExclusive: sourceRect := Rect(0, 0, FGlyph.Width, FGlyph.Height);
           end;
        2: case FState of
             bsUp:        sourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
             bsDisabled:  sourceRect := Rect(FGlyph.Width div FNumGlyphs, 0, FGlyph.Width, FGlyph.Height);
             bsDown:      sourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
             bsExclusive: sourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
           end;
        3: case FState of
             bsUp:        SourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
             bsDisabled:  SourceRect := Rect(FGlyph.width div FNumGlyphs, 0, (FGlyph.Width div FNumGlyphs) * 2, FGlyph.Height);
             bsDown:      SourceRect := Rect((FGlyph.Width div FNumGlyphs) * 2, 0, FGlyph.Width, FGlyph.Height);
             bsExclusive: SourceRect := Rect((FGlyph.Width div FNumGlyphs) * 2, 0, FGlyph.Width, FGlyph.Height);
           end;
        4: case FState of
             bsUp:        SourceRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
             bsDisabled:  SourceRect := Rect(FGlyph.width div FNumGlyphs, 0, (FGlyph.Width div FNumGlyphs) * 2, FGlyph.Height);
             bsDown:      SourceRect := Rect((FGlyph.Width div FNumGlyphs) * 2, 0, (FGlyph.Width div FNumGlyphs) * 3, FGlyph.Height);
             bsExclusive: SourceRect := Rect((FGlyph.width div FNumGlyphs) * 3, 0, FGlyph.Width, FGlyph.Height);
           end;
      end;

      destRect := Rect(0, 0, FGlyph.Width div FNumGlyphs, FGlyph.Height);
      tempGlyph.Width := FGlyph.Width div FNumGlyphs;
      tempGlyph.Height := FGlyph.Height;
      tempGlyph.canvas.copyRect(destRect, FGlyph.canvas, sourcerect);

      if (FNumGlyphs = 1) and (FState = bsDisabled) then
      begin
        tempGlyph := CreateDisabledBitmap(tempGlyph, clBlack, clBtnFace, clBtnHighlight, clBtnShadow, True);
        FTransColor := tempGlyph.Canvas.Pixels[0, tempGlyph.Height - 1];
      end;

      FImageList := TImageList.CreateSize(FGlyph.Width div FNumGlyphs, FGlyph.Height);
      try
        FImageList.AddMasked(tempGlyph, FTransColor);
        FImageList.Draw(memoryBitmap.canvas, glyphpos.x, glyphpos.y, 0);
      finally
        FImageList.Free;
      end;
      tempGlyph.free;
    end;

    // DrawText
    memoryBitmap.Canvas.Brush.Style := bsClear;
    if FState = bsDisabled then
    begin
      OffsetRect(TextBounds, 1, 1);
      memoryBitmap.Canvas.Font.Color := clBtnHighlight;
      DrawText(memoryBitmap.Canvas.Handle, PChar(Caption), Length(Caption), TextBounds, DT_CENTER or DT_VCENTER or DT_SINGLELINE);
      OffsetRect(TextBounds, -1, -1);
      memoryBitmap.Canvas.Font.Color := clBtnShadow;
      DrawText(memoryBitmap.Canvas.Handle, PChar(Caption), Length(Caption), TextBounds, DT_CENTER or DT_VCENTER or DT_SINGLELINE);
    end
    else
      DrawText(memoryBitmap.Canvas.Handle, PChar(Caption), Length(Caption), TextBounds, DT_CENTER or DT_VCENTER or DT_SINGLELINE);

    // Copy memoryBitmap to screen
    canvas.CopyRect(ClientRect, memoryBitmap.canvas, ClientRect);
  finally
    memoryBitmap.free; // delete the bitmap
  end;
end;

procedure TFlatSpeedButton.UpdateTracking;
var
  P: TPoint;
begin
  if Enabled then
  begin
    GetCursorPos(P);
    FMouseInControl := not (FindDragTarget(P, True) = Self);
    if FMouseInControl then
      MouseLeave
    else
      MouseEnter;
  end;
end;

procedure TFlatSpeedButton.Loaded;
begin
  inherited Loaded;
  Invalidate;
end;

procedure TFlatSpeedButton.MouseDown (Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
  inherited MouseDown(Button, Shift, X, Y);
  if (Button = mbLeft) and Enabled then
  begin
    if not FDown then
    begin
      FState := bsDown;
      Invalidate;
    end;
    FDragging := True;
  end;
end;

procedure TFlatSpeedButton.MouseMove (Shift: TShiftState; X, Y: Integer);
var
  NewState: TButtonState;
  P: TPoint;
begin
  inherited;

  // mouse is in control ?
  P := ClientToScreen(Point(X, Y));
  if (MouseInControl <> Self) and (FindDragTarget(P, True) = Self) then
  begin
    if Assigned(MouseInControl) then
      MouseInControl.MouseLeave;
    // the application is active ?
    if (GetActi

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