Определение координат расположения TaskBar

Материал из DRKB

Определение координат расположения TaskBar[править | править код]

uses ShellApi;

var
  AppBarData: TAppBarData;
  bAlwaysOnTop: Boolean; { Поверх окон }
  bAutoHide: Boolean; { Авт. убирать с экрана }
  ClRect: TRect; { Клиентские области }
  Rect: TRect;
  Edge: UInt; { Местоположение TaskBar }

procedure DetectTaskBar;
begin
  AppBarData.hWnd := FindWindow('Shell_TrayWnd', nil);
  AppBarData.cbSize := SizeOf(AppBarData);
  bAlwaysOnTop := (SHAppBarMessage(ABM_GETSTATE, AppBardata) and ABS_ALWAYSONTOP) < > 0;
  bAutoHide := (SHAppBarMessage(ABM_GETSTATE, AppBardata) and ABS_AUTOHIDE) < > 0;
  GetClientRect(AppBarData.hWnd, ClRect.rc);
  GetWindowRect(AppBarData.hwnd, rect);
  if (Rect.top > 0) then
    Edge := ABE_BOTTOM
  else if (Rect.Bottom < Screen.Height) then
    Edge := ABE_TOP
  else if Rect.Right < Screen.Width then
    Edge := ABE_LEFT
  else
    Edge := ABE_RIGHT;
end;


Source: Взято с http://delphiworld.narod.ru
ID: 01771



With SHAppBarMessage[править | править код]

uses
  ShellAPI;

procedure TForm1.Button1Click(Sender: TObject);
var
  tabd: TAppBarData;
  PosString: string;
begin
  FillChar(tabd, SizeOf(TAppBarData), 0);
  tabd.cbSize := SizeOf(TAppBarData);
  if SHAppBarMessage(ABM_GETTASKBARPOS, Tabd) = 0 then Exit;
  with Tabd.rc do
    PosString := Format(' (%d, %d);(%d, %d) ', [Left, Top, Right, Bottom]);
  case tabd.uEdge of
    ABE_LEFT: ShowMessage('Left Position' + PosString);
    ABE_TOP: ShowMessage('Top Position' + PosString);
    ABE_RIGHT: ShowMessage('Right Position' + PosString);
    ABE_BOTTOM: ShowMessage('Bottom Position' + PosString);
  end;
end;


Source: Взято с сайта: http://www.swissdelphicenter.ch
ID: 01772



With FindWindow, GetWindowRect[править | править код]

type
  TTaskBarPos = (_TOP, _BOTTOM, _LEFT, _RIGHT, _NONE);

function GetTaskBarPos: TTaskBarPos;
var
  hTaskbar: HWND;
  T: TRect;
  scrW, scrH: integer;
begin
  hTaskBar := FindWindow('Shell_TrayWnd', nil);
  if hTaskbar <> 0 then
  begin
    GetWindowRect(hTaskBar, T);
    ScrW := Screen.Width;
    ScrH := Screen.Height;
    if (T.Top > scrH div 2) and (T.Right >= scrW) then
      Result := _BOTTOM
    else if (T.Top < scrH div 2) and (T.Bottom <= scrW div 2) then
      Result := _TOP
    else if (T.Left < scrW div 2) and (T.Top <= 0) then
      Result := _LEFT
    else // the last "if" is not really needed
   if T.Left >= ScrW div 2 then
      Result := _RIGHT;
  end;
end;

procedure TForm1.Button5Click(Sender: TObject);
var
  TaskBarPos: TTaskBarPos;
begin
  TaskBarPos := GetTaskBarPos;
  case TaskBarPos of
    _LEFT: ShowMessage('Left Position');
    _TOP: ShowMessage('Top Position');
    _RIGHT: ShowMessage('Right Position');
    _BOTTOM: ShowMessage('Bottom Position');
  end;
end;


Source: Взято с сайта: http://www.swissdelphicenter.ch
ID: 01773