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Access Violation on calling ce.closeCE() from dll

 
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redplug
How do I cheat?
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Joined: 20 Jun 2012
Posts: 9

PostPosted: Thu Jun 21, 2012 5:27 am    Post subject: Access Violation on calling ce.closeCE() from dll Reply with quote

Hi,

I am writing a Plugin and want to close the CE Window if you close my created form. So i created an OnClose event.

But if i close the form i get an Access Violation error from CE.

Any idea why?

Code:
unit WoWBotFormUnit;

{$mode objfpc}{$H+}

interface

uses
  Windows, Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs,
  StdCtrls, Grids, ExtCtrls, CEPluginSDK, WoWApi;

type

  { TWoWBotForm }

  TWoWBotForm = class(TForm)
    ButtonSend: TButton;
    ButtonHideCEMAinWindow: TButton;
    ButtonShowCEMainWindow: TButton;
    EditCommand: TEdit;
    MemoStatus: TMemo;
    procedure ButtonHideCEMAinWindowClick(Sender: TObject);
    procedure ButtonShowCEMainWindowClick(Sender: TObject);
    procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
  private
    { private declarations }
  public
    { public declarations }
  end;


  function GetVersion(var PluginVersion: TPluginVersion; SizeOfPluginVersion: Integer): BOOL; stdcall;
  function InitializePlugin(ExportedFunctions: PExportedFunctions; PluginId: DWord): BOOL; stdcall;
  function DisablePlugin: BOOL; stdcall;


var
  CEExported: TExportedFunctions;
  WoWBotForm: TWoWBotForm;

implementation

{$R *.lfm}

{ TWoWBotForm }

procedure TWoWBotForm.FormClose(Sender: TObject; var CloseAction: TCloseAction);
begin
  CEExported.closeCE();
end;

procedure TWoWBotForm.ButtonShowCEMainWindowClick(Sender: TObject);
begin
  CEExported.unhideMainCEwindow();
end;

procedure TWoWBotForm.ButtonHideCEMAinWindowClick(Sender: TObject);
begin
  CEExported.hideAllCEWindows();
end;

function GetVersion(var PluginVersion: TPluginVersion; SizeOfPluginVersion: Integer): BOOL; stdcall;
begin
  Result := false;
  if SizeOfPluginVersion <> SizeOf(TPluginVersion) then exit;

  PluginVersion.version := 1;
  PluginVersion.pluginname := 'WoW Bot';


  Result := true;
end;


function InitializePlugin(ExportedFunctions: PExportedFunctions; PluginId: DWord): BOOL; stdcall;
begin
  Application.Initialize;
  CEExported := ExportedFunctions^;

  CEExported.hideAllCEWindows();

  WoWBotForm := TWoWBotForm.Create(Application);
  WoWBotForm.Show();
  Result := true;

end;

function DisablePlugin:BOOL; stdcall;
begin
  Result := true;
end;



end.
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Dark Byte
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Joined: 09 May 2003
Posts: 19839
Location: The netherlands

PostPosted: Thu Jun 21, 2012 6:59 am    Post subject: Reply with quote

Not sure, I think because your application.initialize is called inside the same thread as Cheat engine's gui thread

And when ce closes, it disables the plugins, so might be responsible for a crash as well (when it returns it has nothing to return to)

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