自绘XP风格菜单

这是以前写的代码，自绘XP风格的菜单，硬盘坏了后以为没了，最后写的一个软件要自定义风格，“翻箱倒柜”的终于在我可爱的古董机^_^上找到了一个应用的例子。还是把它放到Blog上来，即可共享又可作为备用 :)
　　把主菜单的OnMeasureItem指向MeasureMainItem、OnAdvancedDrawItem指向DrawMainItem，子菜单的OnMeasureItem指向MeasureSubItem、OnAdvancedDrawItem指向DrawSubItem，调整颜色或使用默认颜色即可达到效果

//调整主菜单项尺寸
PRocedure MeasureMainItem(Sender: TObject; ACanvas: TCanvas; var Width, Height: Integer);
begin
  Width := Width + 6;
  Height := Height + 2;
end;

//调整子菜单项尺寸
procedure MeasureSubItem(Sender: TObject; ACanvas: TCanvas; var Width, Height: Integer);
begin
  Width := Width + 20;
  Height := Height + 2;
end;

//绘制主菜单内容
procedure DrawMainItem(Sender: TObject; ACanvas: TCanvas; ARect: TRect; State: TOwnerDrawState);
const
  MainMenuBackColor　　  : TColor = $DEEDEF;
  MainMenuBorderColor　  : TColor = $DEEDEF;
  MainMenuSelectedBackColor  : TColor = $DFA988;
  MainMenuSelectedBorderColor: TColor = $C08000;
  MainMenuHotLightBackColor  : TColor = $DEEDEF;
  MainMenuHotLightBorderColor: TColor = $800080;
  MainMenuGrayedBackColor  : TColor = $DEEDEF;
var
  BrushColor, PenColor: TColor;
  TextRect: TRECT;
begin
  if odGrayed in State then
  begin
　  BrushColor := MainMenuGrayedBackColor;
　  PenColor := MainMenuGrayedBackColor;
  end
  else
　  if odHotLight in State then
　  begin　 //鼠标划过
　　  BrushColor := MainMenuHotLightBackColor;
　　  PenColor := MainMenuHotLightBorderColor;
　  end
　  else
　  if odSelected in State then
　  begin
　　  BrushColor := MainMenuSelectedBackColor;
　　  PenColor := MainMenuSelectedBorderColor;
　  end
　  else
　  begin
　　  BrushColor := MainMenuBackColor;
　　  PenColor := MainMenuBackColor;
　　  if TMenuItem(Sender).Caption = '帮助(&H)' then ARect.Right := ARect.Right + 1600;
　  end;
  ACanvas.Brush.Color := BrushColor;
  ACanvas.Pen.Color := PenColor;
  //ACanvas.FillRect(ARect);
  ACAnvas.Rectangle(ARect);
  ACanvas.Brush.Style := bsClear;
  //绘出文字
  if odGrayed in State then
　  ACanvas.Font.Color := clBtnShadow
  else
　  ACanvas.Font.Color := clBlack;
  SetRect(TextRect, ARect.left+10, ARect.top+3, ARect.right, ARect.bottom);
  DrawText(ACanvas.Handle, PChar(TMenuItem(Sender).Caption), Length(TMenuItem(Sender).Caption),
　　　 TextRect, DT_LEFT);
end;

//绘制子菜单内容
procedure DrawSubItem(Sender: TObject; ACanvas: TCanvas; ARect: TRect; State: TOwnerDrawState);
const
  SubMenuBackColor　　  : TColor = $F7F8F9;
  SubMenuBorderColor　  : TColor = $DEEDEF;
  SubMenuSelectedBackColor  : TColor = $EED2C1;
  SubMenuSelectedBorderColor: TColor = $C08000;
  SubMenuLineColor　　  : TColor = $C8D0D4;
  //SubMenuHotLightBorderColor: TColor = $C08000;
  SubMenuGrayedBackColor  : TColor = $F7F8F9;//$DEEDEF;
var
  BrushColor, PenColor: TColor;
  TextRect: TRECT;
  str: String;
  ImageList: TCustomImageList;
begin
  if (odGrayed in State) and not(TMenuItem(Sender).IsLine) then
  begin
　  BrushColor := SubMenuGrayedBackColor;
　  {if odSelected in State then
　　  PenColor := SubMenuSelectedBorderColor
　  else}
　　  PenColor := SubMenuGrayedBackColor;
  end
  else
　  if odSelected in State then
　  begin
　　  BrushColor := SubMenuSelectedBackColor;
　　  PenColor := SubMenuSelectedBorderColor;
　  end
　  else
　  begin
　　  BrushColor := SubMenuBackColor;
　　  PenColor := SubMenuBackColor;
　  end;
  ACanvas.Brush.Color := BrushColor;
  ACanvas.Pen.Color := PenColor;
  ACAnvas.Rectangle(ARect);
  if not(odSelected in State) or (odGrayed in State) then
  begin
　  ACanvas.Brush.Color := SubMenuBorderColor;
　  ACanvas.FillRect(Rect(ARect.Left, ARect.Top, ARect.Left+20, ARect.Bottom));
  end;
  //绘文字和快捷键
  if TMenuItem(Sender).IsLine then
  begin
　  ACanvas.Brush.Color := SubMenuLineColor;
　  ACanvas.Pen.Color := SubMenuLineColor;
　  ACanvas.FillRect(Rect(ARect.Left+23, ARect.Top+(ARect.Bottom-ARect.Top) div 2-1,
　　　　　　 ARect.Right-2, ARect.Top+(ARect.Bottom-ARect.Top) div 2));
  end
  else
  begin
　  ACanvas.Brush.Style := bsClear;
　  if odGrayed in State then
　　  ACanvas.Font.Color := clBtnShadow
　  else
　　  ACanvas.Font.Color := clBlack;
　  str := TMenuItem(Sender).Caption;
　  SetRect(TextRect, ARect.Left+24, ARect.Top+3, ARect.Right, ARect.Bottom);
　  DrawText(ACanvas.Handle, PChar(str), Length(str), TextRect, DT_LEFT);
　  str := ShortCutToText(TMenuItem(Sender).ShortCut);
　  SetRect(TextRect, ARect.Left+24, ARect.Top+3, ARect.Right-10, ARect.Bottom);
　  DrawText(ACanvas.Handle, PChar(str), Length(str), TextRect, DT_RIGHT);
　  //
　  if TMenuItem(Sender).Checked then
　  begin
　　  ACanvas.Font.Charset := DEFAULT_CHARSET;
　　  ACanvas.Font.Name := 'Webdings';
　　  if TMenuItem(Sender).RadioItem then
　　　  ACanvas.TextOut(ARect.Left+4, ARect.Top, '=')
　　  else
　　  begin
　　　  ACanvas.Font.Height := -16;
　　　  ACanvas.TextOut(ARect.Left+2, ARect.Top, 'a');
　　  end;
　  end;
  end;
  //绘制图片
  ImageList := TMenuItem(Sender).GetImageList;
  if ImageList<>nil then
　  if (odSelected in State) and not(odGrayed in State) then
　　  ImageList.Draw(ACanvas, ARect.left+2, ARect.Top+2, TMenuItem(Sender).ImageIndex)
　  else
　　  ImageList.Draw(ACanvas, ARect.left+3, ARect.Top+3,
　　　　　　　 TMenuItem(Sender).ImageIndex, TMenuItem(Sender).Enabled);
end;