rxshell.pas

rx library V2.7.7a component use in delphi7 to delphi 2006

{*******************************************************}
{                                                       }
{         Delphi VCL Extensions (RX)                    }
{                                                       }
{         Copyright (c) 1995, 1996 AO ROSNO             }
{         Copyright (c) 1997 Master-Bank                }
{                                                       }
{ Patched by Polaris Software                           }
{*******************************************************}

{.$DEFINE USE_TIMER}
{ - Use Windows timer instead thread to the animated TrayIcon }

unit RXShell;

{$I RX.INC}
{$P+,W-,R-}

interface

uses
  Windows, Messages,
  Classes, Graphics, SysUtils, Forms, Controls, Menus, ShellAPI,
  {$IFDEF USE_TIMER} ExtCtrls, {$ENDIF} rxIcoList;

type
  TMouseButtons = set of TMouseButton;

{ TRxTrayIcon }

  TRxTrayIcon = class(TComponent)
  private
    FHandle: HWnd;
    FActive: Boolean;
    FAdded: Boolean;
    FAnimated: Boolean;
    FEnabled: Boolean;
    FClicked: TMouseButtons;
    FIconIndex: Integer;
    FInterval: Word;
    FIconData: TNotifyIconData;
    FIcon: TIcon;
    FIconList: TIconList;
{$IFDEF USE_TIMER}
    FTimer: TTimer;
{$ELSE}
    FTimer: TThread;
{$ENDIF}
    FHint: string;
    FShowDesign: Boolean;
    FPopupMenu: TPopupMenu;
    FOnClick: TMouseEvent;
    FOnDblClick: TNotifyEvent;
    FOnMouseMove: TMouseMoveEvent;
    FOnMouseDown: TMouseEvent;
    FOnMouseUp: TMouseEvent;
    procedure ChangeIcon;
{$IFDEF USE_TIMER}
    procedure Timer(Sender: TObject);
{$ELSE}
    procedure Timer;
{$ENDIF}
    procedure SendCancelMode;
    function CheckMenuPopup(X, Y: Integer): Boolean;
    function CheckDefaultMenuItem: Boolean;
    procedure SetHint(const Value: string);
    procedure SetIcon(Value: TIcon);
    procedure SetIconList(Value: TIconList);
    procedure SetPopupMenu(Value: TPopupMenu);
    procedure Activate;
    procedure Deactivate;
    procedure SetActive(Value: Boolean);
    function GetAnimated: Boolean;
    procedure SetAnimated(Value: Boolean);
    procedure SetShowDesign(Value: Boolean);
    procedure SetInterval(Value: Word);
    procedure IconChanged(Sender: TObject);
    procedure WndProc(var Message: TMessage);
    function GetActiveIcon: TIcon;
  protected
    procedure DblClick; dynamic;
    procedure DoClick(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); dynamic;
    procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); dynamic;
    procedure MouseMove(Shift: TShiftState; X, Y: Integer); dynamic;
    procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); dynamic;
    procedure Loaded; override;
    procedure Notification(AComponent: TComponent; Operation: TOperation); override;
    procedure UpdateNotifyData; virtual;
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    procedure Hide;
    procedure Show;
    property Handle: HWnd read FHandle;
  published
    property Active: Boolean read FActive write SetActive default True;
    property Enabled: Boolean read FEnabled write FEnabled default True;
    property Hint: string read FHint write SetHint;
    property Icon: TIcon read FIcon write SetIcon;
    property Icons: TIconList read FIconList write SetIconList;
    { Ensure Icons is declared before Animated }
    property Animated: Boolean read GetAnimated write SetAnimated default False;
    property Interval: Word read FInterval write SetInterval default 150;
    property PopupMenu: TPopupMenu read FPopupMenu write SetPopupMenu;
    property ShowDesign: Boolean read FShowDesign write SetShowDesign stored False;
    property OnClick: TMouseEvent read FOnClick write FOnClick;
    property OnDblClick: TNotifyEvent read FOnDblClick write FOnDblClick;
    property OnMouseMove: TMouseMoveEvent read FOnMouseMove write FOnMouseMove;
    property OnMouseDown: TMouseEvent read FOnMouseDown write FOnMouseDown;
    property OnMouseUp: TMouseEvent read FOnMouseUp write FOnMouseUp;
  end;

function IconExtract(const FileName: string; Id: Integer): TIcon;
procedure WinAbout(const AppName, Stuff: string);

type
  TExecState = (esNormal, esMinimized, esMaximized, esHidden);

function FileExecute(const FileName, Params, StartDir: string;
  InitialState: TExecState): THandle;
function FileExecuteWait(const FileName, Params, StartDir: string;
  InitialState: TExecState): Integer;

implementation

uses
  RxConst, RxCConst, rxVCLUtils, rxMaxMin;

procedure WinAbout(const AppName, Stuff: string);
var
  Wnd: HWnd;
  Icon: HIcon;
begin
  if Application.MainForm <> nil then Wnd := Application.MainForm.Handle
  else Wnd := 0;
  Icon := Application.Icon.Handle;
  if Icon = 0 then Icon := LoadIcon(0, IDI_APPLICATION);
  ShellAbout(Wnd, PChar(AppName), PChar(Stuff), Icon);
end;

function IconExtract(const FileName: string; Id: Integer): TIcon;
var
  S: array[0..255] of char;
  IconHandle: HIcon;
  Index: Word;
begin
  Result := TIcon.Create;
  try
    StrPLCopy(S, FileName, SizeOf(S) - 1);
    IconHandle := ExtractIcon(hInstance, S, Id);
    if IconHandle < 2 then begin
      Index := Id;
      IconHandle := ExtractAssociatedIcon(hInstance, S, Index);
    end;
    if IconHandle < 2 then begin
      if IconHandle = 1 then
        raise EResNotFound.Create(LoadStr(SFileNotExec))
      else begin
        Result.Free;
        Result := nil;
      end;
    end else Result.Handle := IconHandle;
  except
    Result.Free;
    raise;
  end;
end;

const
  ShowCommands: array[TExecState] of Integer =
    (SW_SHOWNORMAL, SW_MINIMIZE, SW_SHOWMAXIMIZED, SW_HIDE);

function FileExecute(const FileName, Params, StartDir: string;
  InitialState: TExecState): THandle;
begin
  Result := ShellExecute(Application.Handle, nil, PChar(FileName),
    PChar(Params), PChar(StartDir), ShowCommands[InitialState]);
end;

function FileExecuteWait(const FileName, Params, StartDir: string;
  InitialState: TExecState): Integer;
var
  Info: TShellExecuteInfo;
  ExitCode: DWORD;
begin
  FillChar(Info, SizeOf(Info), 0);
  Info.cbSize := SizeOf(TShellExecuteInfo);
  with Info do begin
    fMask := SEE_MASK_NOCLOSEPROCESS;
    Wnd := Application.Handle;
    lpFile := PChar(FileName);
    lpParameters := PChar(Params);
    lpDirectory := PChar(StartDir);
    nShow := ShowCommands[InitialState];
  end;
  if ShellExecuteEx(@Info) then begin
    repeat
      Application.ProcessMessages;
      GetExitCodeProcess(Info.hProcess, ExitCode);
    until (ExitCode <> STILL_ACTIVE) or Application.Terminated;
    Result := ExitCode;
  end
  else Result := -1;
end;

{$IFNDEF USE_TIMER}

{ TTimerThread }

type
  TTimerThread = class(TThread)
  private
    FOwnerTray: TRxTrayIcon;
  protected
    procedure Execute; override;
  public
    constructor Create(TrayIcon: TRxTrayIcon; CreateSuspended: Boolean);
  end;

constructor TTimerThread.Create(TrayIcon: TRxTrayIcon; CreateSuspended: Boolean);
begin
  FOwnerTray := TrayIcon;
  inherited Create(CreateSuspended);
  FreeOnTerminate := True;
end;

procedure TTimerThread.Execute;

  function ThreadClosed: Boolean;
  begin
    Result := Terminated or Application.Terminated or (FOwnerTray = nil);
  end;

begin
  while not Terminated do begin
    if not ThreadClosed then
      if SleepEx(FOwnerTray.FInterval, False) = 0 then begin
        if not ThreadClosed and FOwnerTray.Animated then
          FOwnerTray.Timer;
      end;
  end;
end;

{$ENDIF USE_TIMER}

{ TRxTrayIcon }

constructor TRxTrayIcon.Create(AOwner: Tcomponent);
begin
  inherited Create(AOwner);
  FHandle := {$IFDEF RX_D6}Classes.{$ENDIF}AllocateHWnd(WndProc); // Polaris
  FIcon := TIcon.Create;
  FIcon.OnChange := IconChanged;
  FIconList := TIconList.Create;
  FIconList.OnChange := IconChanged;
  FIconIndex := -1;
  FEnabled := True;
  FInterval := 150;
  FActive := True;
end;

destructor TRxTrayIcon.Destroy;
begin
  Destroying;
  FEnabled := False;
  FIconList.OnChange := nil;
  FIcon.OnChange := nil;
  SetAnimated(False);
  Deactivate;
  {$IFDEF RX_D6}Classes.{$ENDIF}DeallocateHWnd(FHandle);  // Polaris
  FIcon.Free;
  FIcon := nil;
  FIconList.Free;
  FIconList := nil;
  inherited Destroy;
end;

procedure TRxTrayIcon.Loaded;
begin
  inherited Loaded;
  if FActive and not (csDesigning in ComponentState) then Activate;
end;

procedure TRxTrayIcon.Notification(AComponent: TComponent;
  Operation: TOperation);
begin
  inherited Notification(AComponent, Operation);
  if (AComponent = PopupMenu) and (Operation = opRemove) then
    PopupMenu := nil;
end;

procedure TRxTrayIcon.SetPopupMenu(Value: TPopupMenu);
begin
  FPopupMenu := Value;
  if Value <> nil then Value.FreeNotification(Self);
end;

procedure TRxTrayIcon.SendCancelMode;
var
  F: TForm;
begin
  if not (csDestroying in ComponentState) then begin
    F := Screen.ActiveForm;
    if F = nil then F := Application.MainForm;
    if F <> nil then F.SendCancelMode(nil);
  end;
end;

function TRxTrayIcon.CheckMenuPopup(X, Y: Integer): Boolean;
begin
  Result := False;
  if not (csDesigning in ComponentState) and Active and
    (PopupMenu <> nil) and PopupMenu.AutoPopup then
  begin
    PopupMenu.PopupComponent := Self;
    SendCancelMode;
    SwitchToWindow(FHandle, False);
    Application.ProcessMessages;
    try
      PopupMenu.Popup(X, Y);
    finally
      SwitchToWindow(FHandle, False);
    end;
    Result := True;
  end;
end;