How to draw button in non client area vista aero

[haidomingo]

Hi,
I tried to convert the project but I get this
can someone help me?

The conversion is incomplete in some rows.

see:
http://img269.imageshack.us/img269/3387/immaginekan.jpg

code

Delphi-Quellcode:

unit Unit3;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls,JwaDwmapi, ExtCtrls,jwauxtheme, Buttons;

type
  TForm3 = class(TForm)
    btn1: TSpeedButton;

    procedure FormActivate(Sender: TObject);
    procedure FormPaint(Sender: TObject);
    procedure FormCreate(Sender: TObject);

  private
    { Private declarations }
    dwmMargins  : MARGINS;
    _marginOk   : Boolean;
    _AeroEnabled: Boolean;
     FRectText: TRect;
    FDown:boolean;
    procedure WndProc(var Message : TMessage) ; override ;
    function HitTestNCA(hwnd:HWND;wparam:WPARAM;lparam:LPARAM):Integer;

  public
    { Public declarations }
    function AeroEnabled: Boolean;
    procedure CheckGlassEnabled;
  end;

var
  Form3: TForm3;

implementation

{$R *.dfm}

function TForm3.AeroEnabled: Boolean;
begin
  Result:=_AeroEnabled
end;


procedure TForm3.CheckGlassEnabled;
var
  Response: Integer;
  Enabled : bool;
begin
  if (Win32MajorVersion >= 6) then begin
     Enabled:=False;
     response :=DwmIsCompositionEnabled(Enabled);
     _aeroEnabled:= enabled;
  end;
end;

procedure TForm3.FormActivate(Sender: TObject);
begin
   inherited;
   if (dwmMargins.cyTopHeight < (btn1.Height+btn1.Top)) then
       dwmMargins.cyTopHeight:= (btn1.Height+btn1.Top);
   DwmExtendFrameIntoClientArea(Handle,dwmMargins);
end;

procedure TForm3.FormCreate(Sender: TObject);
begin
   // InitializeComponent();
   // tsNonClientToolStrip.Renderer = new NonClientAreaRenderer();
    DoubleBuffered:=true;
    CheckGlassEnabled
end;

procedure TForm3.FormPaint(Sender: TObject);
var
  r : TRect;
begin
  inherited;
  if _aeroEnabled then begin
      Canvas.Brush.Color:=TransparentColorValue;
      Canvas.FillRect(Form3.ClientRect);
  end
  else begin
      Canvas.Brush.Color:=RGB($00C2, $00D9, $00F7);
      Canvas.FillRect(Form3.ClientRect);
      //
  end;
  r.Left:=dwmMargins.cxLeftWidth - 0;
  r.Top:= dwmMargins.cyTopHeight - 0;
  r.Right:= Width - dwmMargins.cxRightWidth - 0;
  r.Bottom:= Height - dwmMargins.cyBottomHeight - 0;
  Canvas.Brush.Color:=clBtnface;
  Canvas.FillRect(r);

end;


function TForm3.HitTestNCA(hwnd:HWND; wparam:WParam; lparam:LPARAM):Integer;
var
  P : TPoint;

begin
  P.X:=LoWord(integer(lparam));
  P.Y:=HiWord(integer(lparam));

end;




procedure TForm3.WndProc(var Message : TMessage);
const
    WM_NCCALCSIZE = $0083;
    WM_NCHITTEST =  $0084;
var
    Result : LResult;
    dwmHandled : bool;
    nccsp: TNCCalcSizeParams;

begin
    dwmHandled:=DwmDefWindowProc(Form3.Handle, Message.Msg, Message.WParam, Message.LParam, result);
    if (dwmHandled = true) then begin
        message.Result:=result;
        //return
    end;
    if ( (Message.Msg = WM_NCCALCSIZE) and (message.WParam = 1)) then begin

       // Adjust (shrink) the client rectangle to accommodate the border:
       nccsp.rgrc0.Top :=0;
       nccsp.rgrc0.Bottom:= 0;
       nccsp.rgrc0.Left :=0;
       nccsp.rgrc0.Right:=0;
       if (_marginOk=false) then begin
             //Set what client area would be for passing to DwmExtendIntoClientArea
           dwmMargins.cyTopHeight:= nccsp.rgrc0.Top - nccsp.rgrc0.Top;
           dwmMargins.cxLeftWidth:= nccsp.rgrc0.Left - nccsp.rgrc0.Left;
           dwmMargins.cyBottomHeight:= nccsp.rgrc0.Bottom - nccsp.rgrc0.Bottom;
           dwmMargins.cxRightWidth:= nccsp.rgrc0.Right - nccsp.rgrc0.Right;
           _marginOk := true;
       end;
       //Marshal.StructureToPtr(nccsp, m.LParam, false);
       Message.Result:=0;
    end
    else if (message.Msg = WM_NCHITTEST) and (Integer(Message.Result)= 0) then
       Message.Result:= HitTestNCA(Form3.Handle, Message.WParam, message.LParam)
    else
       inherited;
end;


end.