afxadahimpl1.pas

来自「Delphi实战演练一书的配套光盘」· PAS 代码 · 共 381 行

unit AFXAdahImpl1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  ActiveX, AxCtrls, AFXAdahProj1_TLB, StdVcl, Db, DBClient, MConnect,
  Grids, DBGrids, StdCtrls;

type
  TAFXAdah = class(TActiveForm, IAFXAdah)
    Label1: TLabel;
    SQL: TMemo;
    DatabaseName: TComboBox;
    RunButton: TButton;
    DBGrid1: TDBGrid;
    DataSource1: TDataSource;
    RemoteServer: TDCOMConnection;
    ClientData: TClientDataSet;
    procedure DatabaseNameClick(Sender: TObject);
    procedure RunButtonClick(Sender: TObject);
    procedure ActiveFormCreate(Sender: TObject);
  private
    { Private declarations }
    FEvents: IAFXAdahEvents;
    procedure ActivateEvent(Sender: TObject);
    procedure ClickEvent(Sender: TObject);
    procedure CreateEvent(Sender: TObject);
    procedure DblClickEvent(Sender: TObject);
    procedure DeactivateEvent(Sender: TObject);
    procedure DestroyEvent(Sender: TObject);
    procedure KeyPressEvent(Sender: TObject; var Key: Char);
    procedure PaintEvent(Sender: TObject);
  protected
    { Protected declarations }
    procedure DefinePropertyPages(DefinePropertyPage: TDefinePropertyPage); override;
    procedure EventSinkChanged(const EventSink: IUnknown); override;
    function Get_Active: WordBool; safecall;
    function Get_AutoScroll: WordBool; safecall;
    function Get_AutoSize: WordBool; safecall;
    function Get_AxBorderStyle: TxActiveFormBorderStyle; safecall;
    function Get_Caption: WideString; safecall;
    function Get_Color: OLE_COLOR; safecall;
    function Get_Cursor: Smallint; safecall;
    function Get_DoubleBuffered: WordBool; safecall;
    function Get_DropTarget: WordBool; safecall;
    function Get_Enabled: WordBool; safecall;
    function Get_Font: IFontDisp; safecall;
    function Get_HelpFile: WideString; safecall;
    function Get_KeyPreview: WordBool; safecall;
    function Get_PixelsPerInch: Integer; safecall;
    function Get_PrintScale: TxPrintScale; safecall;
    function Get_Scaled: WordBool; safecall;
    function Get_Visible: WordBool; safecall;
    function Get_VisibleDockClientCount: Integer; safecall;
    procedure _Set_Font(const Value: IFontDisp); safecall;
    procedure Set_AutoScroll(Value: WordBool); safecall;
    procedure Set_AutoSize(Value: WordBool); safecall;
    procedure Set_AxBorderStyle(Value: TxActiveFormBorderStyle); safecall;
    procedure Set_Caption(const Value: WideString); safecall;
    procedure Set_Color(Value: OLE_COLOR); safecall;
    procedure Set_Cursor(Value: Smallint); safecall;
    procedure Set_DoubleBuffered(Value: WordBool); safecall;
    procedure Set_DropTarget(Value: WordBool); safecall;
    procedure Set_Enabled(Value: WordBool); safecall;
    procedure Set_Font(var Value: IFontDisp); safecall;
    procedure Set_HelpFile(const Value: WideString); safecall;
    procedure Set_KeyPreview(Value: WordBool); safecall;
    procedure Set_PixelsPerInch(Value: Integer); safecall;
    procedure Set_PrintScale(Value: TxPrintScale); safecall;
    procedure Set_Scaled(Value: WordBool); safecall;
    procedure Set_Visible(Value: WordBool); safecall;
  public
    { Public declarations }
    procedure Initialize; override;
  end;

implementation

uses ComObj, ComServ;

{$R *.DFM}

{ TAFXAdah }

procedure TAFXAdah.DefinePropertyPages(DefinePropertyPage: TDefinePropertyPage);
begin
  { 定义属性 }
end;

procedure TAFXAdah.EventSinkChanged(const EventSink: IUnknown);
begin
  FEvents := EventSink as IAFXAdahEvents;
end;

procedure TAFXAdah.Initialize;
begin
  inherited Initialize;
  OnActivate := ActivateEvent;
  OnClick := ClickEvent;
  OnCreate := CreateEvent;
  OnDblClick := DblClickEvent;
  OnDeactivate := DeactivateEvent;
  OnDestroy := DestroyEvent;
  OnKeyPress := KeyPressEvent;
  OnPaint := PaintEvent;
end;

function TAFXAdah.Get_Active: WordBool;
begin
  Result := Active;
end;

function TAFXAdah.Get_AutoScroll: WordBool;
begin
  Result := AutoScroll;
end;

function TAFXAdah.Get_AutoSize: WordBool;
begin
  Result := AutoSize;
end;

function TAFXAdah.Get_AxBorderStyle: TxActiveFormBorderStyle;
begin
  Result := Ord(AxBorderStyle);
end;

function TAFXAdah.Get_Caption: WideString;
begin
  Result := WideString(Caption);
end;

function TAFXAdah.Get_Color: OLE_COLOR;
begin
  Result := OLE_COLOR(Color);
end;

function TAFXAdah.Get_Cursor: Smallint;
begin
  Result := Smallint(Cursor);
end;

function TAFXAdah.Get_DoubleBuffered: WordBool;
begin
  Result := DoubleBuffered;
end;

function TAFXAdah.Get_DropTarget: WordBool;
begin
  Result := DropTarget;
end;

function TAFXAdah.Get_Enabled: WordBool;
begin
  Result := Enabled;
end;

function TAFXAdah.Get_Font: IFontDisp;
begin
  GetOleFont(Font, Result);
end;

function TAFXAdah.Get_HelpFile: WideString;
begin
  Result := WideString(HelpFile);
end;

function TAFXAdah.Get_KeyPreview: WordBool;
begin
  Result := KeyPreview;
end;

function TAFXAdah.Get_PixelsPerInch: Integer;
begin
  Result := PixelsPerInch;
end;

function TAFXAdah.Get_PrintScale: TxPrintScale;
begin
  Result := Ord(PrintScale);
end;

function TAFXAdah.Get_Scaled: WordBool;
begin
  Result := Scaled;
end;

function TAFXAdah.Get_Visible: WordBool;
begin
  Result := Visible;
end;

function TAFXAdah.Get_VisibleDockClientCount: Integer;
begin
  Result := VisibleDockClientCount;
end;

procedure TAFXAdah._Set_Font(const Value: IFontDisp);
begin
  SetOleFont(Font, Value);
end;

procedure TAFXAdah.ActivateEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnActivate;
end;

procedure TAFXAdah.ClickEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnClick;
end;

procedure TAFXAdah.CreateEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnCreate;
end;

procedure TAFXAdah.DblClickEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnDblClick;
end;

procedure TAFXAdah.DeactivateEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnDeactivate;
end;

procedure TAFXAdah.DestroyEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnDestroy;
end;

procedure TAFXAdah.KeyPressEvent(Sender: TObject; var Key: Char);
var
  TempKey: Smallint;
begin
  TempKey := Smallint(Key);
  if FEvents <> nil then FEvents.OnKeyPress(TempKey);
  Key := Char(TempKey);
end;

procedure TAFXAdah.PaintEvent(Sender: TObject);
begin
  if FEvents <> nil then FEvents.OnPaint;
end;

procedure TAFXAdah.Set_AutoScroll(Value: WordBool);
begin
  AutoScroll := Value;
end;

procedure TAFXAdah.Set_AutoSize(Value: WordBool);
begin
  AutoSize := Value;
end;

procedure TAFXAdah.Set_AxBorderStyle(Value: TxActiveFormBorderStyle);
begin
  AxBorderStyle := TActiveFormBorderStyle(Value);
end;

procedure TAFXAdah.Set_Caption(const Value: WideString);
begin
  Caption := TCaption(Value);
end;

procedure TAFXAdah.Set_Color(Value: OLE_COLOR);
begin
  Color := TColor(Value);
end;

procedure TAFXAdah.Set_Cursor(Value: Smallint);
begin
  Cursor := TCursor(Value);
end;

procedure TAFXAdah.Set_DoubleBuffered(Value: WordBool);
begin
  DoubleBuffered := Value;
end;

procedure TAFXAdah.Set_DropTarget(Value: WordBool);
begin
  DropTarget := Value;
end;

procedure TAFXAdah.Set_Enabled(Value: WordBool);
begin
  Enabled := Value;
end;

procedure TAFXAdah.Set_Font(var Value: IFontDisp);
begin
  SetOleFont(Font, Value);
end;

procedure TAFXAdah.Set_HelpFile(const Value: WideString);
begin
  HelpFile := String(Value);
end;

procedure TAFXAdah.Set_KeyPreview(Value: WordBool);
begin
  KeyPreview := Value;
end;

procedure TAFXAdah.Set_PixelsPerInch(Value: Integer);
begin
  PixelsPerInch := Value;
end;

procedure TAFXAdah.Set_PrintScale(Value: TxPrintScale);
begin
  PrintScale := TPrintScale(Value);
end;

procedure TAFXAdah.Set_Scaled(Value: WordBool);
begin
  Scaled := Value;
end;

procedure TAFXAdah.Set_Visible(Value: WordBool);
begin
  Visible := Value;
end;

procedure TAFXAdah.DatabaseNameClick(Sender: TObject);
var
  Password: string;
begin
  if DatabaseName.Text <> '' then
  begin
    ClientData.Close;
    try
      RemoteServer.AppServer.SetDatabaseName(DatabaseName.Text, '');
    except

      on E: Exception do
        if E.Message = 'Password Required' then
        begin
          if InputQuery(E.Message, 'Enter password', Password) then
            RemoteServer.AppServer.SetDatabaseName(DatabaseName.Text, Password);
        end else
          raise;
    end;
  end;
end;

procedure TAFXAdah.RunButtonClick(Sender: TObject);
begin
  ClientData.Close;
  ClientData.CommandText := SQL.Lines.Text;
  ClientData.Open;
end;

procedure TAFXAdah.ActiveFormCreate(Sender: TObject);
var
  I: Integer;
  DBNames: OleVariant;
begin
  RemoteServer.Connected := True;
  DBNames := RemoteServer.AppServer.GetDatabaseNames;
  if VarIsArray(DBNames) then
    for I := 0 to VarArrayHighBound(DBNames, 1) do
      DatabaseName.Items.Add(DBNames[I]);
  DatabaseNameClick(Self);
end;

initialization
  TActiveFormFactory.Create(
    ComServer,
    TActiveFormControl,
    TAFXAdah,
    Class_AFXAdah,
    1,
    '',
    OLEMISC_SIMPLEFRAME or OLEMISC_ACTSLIKELABEL,
    tmApartment);
end.