Re: DCom-security question.... - COM Discussion Boards

JohnnyG24-Jun-02 8:59

JohnnyG

24-Jun-02 8:59

Thanks

I'm wondering if I'm using say the serial comm port control then I wouldn't need or have that equivalent file for ObjX_i.c, right? Wouldn't I just import the typelib or something? Or, do I still need the MIDL compiler to generate the .c file?

soptest24-Jun-02 9:21

soptest

24-Jun-02 9:21

Yes, you have to use MIDL compiler to generate those files, because #import directive is C++ specific.

soptest

JohnnyG30-Jun-02 14:31

JohnnyG

30-Jun-02 14:31

Could you help with this? If I used VC++ to add the component it generates the .tli and .tlh files but they don't seem usable for C. How do I generate a header file that will have all of the declarations for the mscomm32.ocx control?

Does anyone have an example of how to take one of Microsoft's supplied controls e.g. mscomm32.ocx or msscript.ocx in a Win32 <bold> C program?????

Re: ActiveX is "unsafe" huh?

Amit Dey1-Jul-02 6:44

Amit Dey

1-Jul-02 6:44

This is really cool. soptest, you are the man!!

You yard yellow years yieldingly; you yanked your yearning yoke.-Jeremy Falcon-CPite.

Amit Dey

sonork: 100:18407
msn: visualcdev

ActiveX is "unsafe" huh?

Philip Patrick22-Jun-02 6:08

Philip Patrick

22-Jun-02 6:08

Suppose I have an activeX in HTML page with some PARAMs specified. Everytime the page loads IE asks if you want to allow the control to interact with HTML page. Now the question. How can I disable this? I don't want users to press Yes everytime they come to the page! Is there any way without buying an expensive license from VeriSign ($400) and without changing security settings?

Philip Patrick
Web-site: www.stpworks.com
"Two beer or not two beer?" Shakesbeer

Michael Dunn22-Jun-02 6:50

Michael Dunn

22-Jun-02 6:50

Implement IObjectSafety (or use IObjectSafetyImpl if you're using ATL). Note that you shouldn't do that if your control really is unsafe - that is, it could cause damage to the registry or file system if whacky params are passed in.

--Mike--
Just released - RightClick-Encrypt - Adds fast & easy file encryption to Explorer
My really out-of-date homepage
Sonork-100.19012 Acid_Helm

DCom-security question....

stefanb22-Jun-02 5:27

stefanb

22-Jun-02 5:27

hello,

I've built a DCOM-server (with the ATL in VC++6.0)and installed it on machine01. Afterwards I've implemented a client (console-app) and installed it on machine02. Now the client should be able to launch and access the server on the remote machine(01).

so I added the method:

CoInitializeSecurity(NULL,
-1,
NULL,
NULL,
RPC_C_AUTHN_LEVEL_NONE,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
EOAC_NONE,
NULL);

after calling CoInitialize(NULL); in the server an client. This should turn off security and I should be able to to launch and access the server... This doesn't work. So I have to do some DCOM-configuration with the dcomcnfg.exe (WinNT4).

Is there a way of implementation, so that I don't have to do the configuration with dcomcnfg.exe and still have the possibility to launch and access the server from machine02 on machine01?
(perhaps I have to implement a installation-programm which is writing the wright entries to the registry...?)

Thanx in advance,
bye,
stefan.

Re: DCom-security question....

Jason Henderson24-Jun-02 9:20

Jason Henderson

24-Jun-02 9:20

What kind of errors are you getting?

In the appid key in the registry, set the AuthenticationLevel = 1, the RemoteServerName = the server machine name, and RunAs = "Interactive User".
Win9x machines must have the server app running.

Jason Henderson
_{quasi-homepage}
^articles
_{"Like it or not, I'm right!"}

Re: DCom-security question....

stefanb24-Jun-02 9:58

stefanb

24-Jun-02 9:58

Thank you for your reply,
but I finally managed it doing it like I was told in the fabolous articel:

Code Project/COM / DCOM / COM+ - DCOM D-Mystified: A DCOM Tutorial, Step 1-7 by Brian Hart

so I think I just have to implement some kind of installation-tool to adjust dcomcnfg.exe, so that I'm able to install the server and config the registry at the same time, so that everything is worling fine (good luck (:oD)).

have a nice day,
bye,
stefan Roll eyes | :rolleyes:

This one is easy!

Al_Pennyworth21-Jun-02 8:24

Different Kind of problem

21-Jun-02 8:24

Hey, can anyone give any recommendations of good books that I can get that will help with my COM/OLE/ATL woes? I am using COM/OLE (and/or ATL) and trying to incorporate MS Word into an application, add a toolbar button dynamically, and other processing, and I was wondering if anyone knew of any books that might be good, possibly show some examples, etc. I would like to get a couple of books that might be working with Word in them. Any ideas would be appreciated!!!

I have looked at various posts on this website and a few others and they have helped alot. But they just don't seem to work in my application and I am not sure why...

Al_Pennyworth20-Jun-02 8:46

20-Jun-02 8:46

Hey, I know I posted a message about a problem not too long ago but I am working on a different approach and I ran into some trouble. I am trying to capture the event and I tried to use the Building Office2k Addin as a guide. I had a problem with the last approach so I tried to rework it. No luck, now I am getting the message:

error C2787: '_CommandBarButtonEvents' : no GUID has been associated with this object

My Addin.h file looks like this:

// Addin.h : Declaration of the CAddin

#ifndef __ADDIN_H_
#define __ADDIN_H_

#include "resource.h" // main symbols
#include "mso.h"
#include "msword.h"
#import "C:\Program Files\Common Files\Designer\MSADDNDR.DLL" raw_interfaces_only, raw_native_types, no_namespace, named_guids

/////////////////////////////////////////////////////////////////////////////
// CAddin
extern _ATL_FUNC_INFO OnClickButtonInfo;

class ATL_NO_VTABLE CAddin :
public CComObjectRootEx<ccomsinglethreadmodel>,
public CComCoClass<caddin, &clsid_addin="">,
public ISupportErrorInfo,
public IDispatchImpl<iaddin, &iid_iaddin,="" &libid_autoproject3lib="">,
public IDispatchImpl<_IDTExtensibility2, &IID__IDTExtensibility2, &LIBID_AddInDesignerObjects>,
public IDispEventSimpleImpl<1, CAddin, &__uuidof(Office::_CommandBarButtonEvents)>
{
public:
typedef IDispEventSimpleImpl CommandButton1Events;
CAddin()
{
}

DECLARE_REGISTRY_RESOURCEID(IDR_ADDIN)

DECLARE_PROTECT_FINAL_CONSTRUCT()

BEGIN_COM_MAP(CAddin)
COM_INTERFACE_ENTRY(IAddin)
//DEL COM_INTERFACE_ENTRY(IDispatch)
COM_INTERFACE_ENTRY(ISupportErrorInfo)
COM_INTERFACE_ENTRY2(IDispatch, IAddin)
COM_INTERFACE_ENTRY(_IDTExtensibility2)
END_COM_MAP()

BEGIN_SINK_MAP(CAddin)
SINK_ENTRY_INFO(1, __uuidof(Office::_CommandBarButtonEvents), /*dispid*/0x01, OnClickButton, &OnClickButtonInfo)
END_SINK_MAP()

// ISupportsErrorInfo
STDMETHOD(InterfaceSupportsErrorInfo)(REFIID riid);
void __stdcall OnClickButton(IDispatch * /* Office::_CommandBarButton**/ Ctrl, VARIANT_BOOL * CancelDefault);

// IAddin
public:
// _IDTExtensibility2
STDMETHOD(OnConnection)(IDispatch * Application, ext_ConnectMode ConnectMode, IDispatch * AddInInst, SAFEARRAY * * custom)
{
COleVariant covTrue((short) TRUE),
covFalse((short) FALSE),
covOptional((long)DISP_E_PARAMNOTFOUND, VT_ERROR);

Word::_Application Wordapp;
Office::_CommandBars oBars = Wordapp.GetCommandBars(); // New CommandBars
// collection object

Office::CommandBar oBar;
Office::CommandBarControls oControls;
Office::_CommandBarButton oButton;

VARIANT vName;
vName.vt = VT_BSTR;
vName.bstrVal = SysAllocString(L"PSI");

VARIANT vPosition;
vPosition.vt = VT_I2;
vPosition.iVal = 1; // 4 = Floating; 0 = top;

// Add new bar to the command bars collection
Office::CommandBar oNewBar = oBars.Add(vName, // const Variant Name
vPosition, // const Variant Position
covFalse, // const Variant (replace)MenuBar
covTrue // const Variant Temporary
);

oNewBar.SetVisible(TRUE);

// Get the collection (now empty) of controls on the new commandbar
Office::CommandBarControls oNewControls = oNewBar.GetControls();

VARIANT vType;
vType.vt = VT_I4;
vType.lVal = (long)1;

Office::_CommandBarButton oNewButton1 = // Office XP - note leading underscore
oNewControls.Add(vType, // Type = msoControlButton
covOptional, // Id
covOptional, // Parameter
covOptional, // Before
covTrue // Temporary
);

oNewButton1.SetStyle(3); // msoButtonIconAndCaption
oNewButton1.SetCaption("PSI Save & Exit");
oNewButton1.SetTooltipText("This is a new button");
oNewButton1.SetVisible(TRUE);
oNewButton1.SetState(0); // msoButtonUp

OpenClipboard(NULL); // Reserve clipboard for this program

CBitmap MyBitmap;
MyBitmap.LoadBitmap(IDB_BITMAP1); // A Bitmap you drew in the
// Resource Editor
HBITMAP MyBitmapHandle = (HBITMAP)MyBitmap; // Cast it to a HBITMAP
SetClipboardData(CF_BITMAP, MyBitmapHandle);
CloseClipboard(); // Free clipboard so PasteFace() can use it

oNewButton1.PasteFace();

hr = CommandButton1Events::DispEventAdvise((IDispatch*)m_spButton);
if(FAILED(hr))
return hr;
bConnected = true;

return S_OK;
}
STDMETHOD(OnDisconnection)(ext_DisconnectMode RemoveMode, SAFEARRAY * * custom)
{
if(bConnected)
{
HRESULT hr = CommandButton1Events::DispEventUnadvise((IDispatch*)m_spButton);
if(FAILED(hr))
return hr;
}
return S_OK;
}
STDMETHOD(OnAddInsUpdate)(SAFEARRAY * * custom)
{
return E_NOTIMPL;
}
STDMETHOD(OnStartupComplete)(SAFEARRAY * * custom)
{
return E_NOTIMPL;
}
STDMETHOD(OnBeginShutdown)(SAFEARRAY * * custom)
{
return E_NOTIMPL;
}
private:
Office::_CommandBarButton m_spButton;
bool bConnected;
// _IDTExtensibility2
};

#endif //__ADDIN_H_

I am new to COM/ATL programming and I am getting confused. Can Anyone Help!!!

Any Idea?

Al_Pennyworth20-Jun-02 4:27

20-Jun-02 4:27

Thanks in advance for any help. I am trying to create an ATL server using the example "Building an Office2K COM addin with VC++/ATL". I am having a problem with the imports. Here is my stdafx.h:
// stdafx.h : include file for standard system include files,
// or project specific include files that are used frequently,
// but are changed infrequently

#if !defined(AFX_STDAFX_H__613C434D_55D9_45D2_937E_C26FA13D3F22__INCLUDED_)
#define AFX_STDAFX_H__613C434D_55D9_45D2_937E_C26FA13D3F22__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define STRICT
#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0400
#endif
#define _ATL_APARTMENT_THREADED

#include
//You may derive a class from CComModule and use it if you want to override
//something, but do not change the name of _Module
extern CComModule _Module;
#include

//{{AFX_INSERT_LOCATION}}
#import "C:\Program Files\Common Files\Microsoft Shared\Office10\mso.dll" rename_namespace("Office") named_guids
using namespace Office;

#import "C:\Program Files\Microsoft Office\Office10\MSWORD.olb" rename("ExitWindows", "WordExitWindows"), named_guids, raw_interfaces_only
using namespace Word;

// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_STDAFX_H__613C434D_55D9_45D2_937E_C26FA13D3F22__INCLUDED)

Unfortunately, I keep getting the error message:

StdAfx.obj : fatal error LNK1179: invalid or corrupt file: duplicate comdat "_IID_CanvasShapes"

Any ideas what I need to do to fix this problem? I am new to ATL but I was thinking the "using namespace Word" should have taken care of any duplicates. I used the article as an example because I am not using Outlook, instead I am using MS Word. Any thoughts?

Rama Krishna Vavilala20-Jun-02 8:02

Rama Krishna Vavilala

20-Jun-02 8:02

How does your stdafx.cpp look. Mail me the code if possible. It happens sometimes if you use Interface refernce in the main project file.

Al_Pennyworth24-Jun-02 7:05

24-Jun-02 7:05

Any luck on the code? I have been trying different things but nothing has worked yet???

Amit Dey1-Jul-02 3:35

Amit Dey

1-Jul-02 3:35

I can guess that you are using Office XP but are you using VS.NET? the #import statements works fine for me (MSVC6.0 and Office2k), so I really can't say what the problem is. Once you get over your #import, I think the code will work fine.

Anyway, have you tried the exclude keyword to exclude redundant/duplicate IID's/GUID's in #import?

You yard yellow years yieldingly; you yanked your yearning yoke.-Jeremy Falcon-CPite.

Amit Dey

sonork: 100:18407
msn: visualcdev

1-Jul-02 7:31

No, I am using VC 6.0, I have not used VC.NET yet. I have tried to exclude the duplicate IID's but after the 10th or 15th one, I thought this is not the correct way to do this. It seems that there are several (A LOT) of duplicates, not just the on. I used the example of the Office2K and Outlook and Outlook does not have the same IID's as Office. But apparently, Word does for some reason???

Amit Dey27-Aug-02 13:49

Amit Dey

27-Aug-02 13:49

Yeah, I came across a similar duplicate IID problem while building Word addin. I know how frustrating this is!! Big Grin | :-D

If you already haven't figured out, the solution is to move the #import statement for importing Word typelib(the 2nd #import) to your addins .h file.

e.g. I put the following #imports in my Addin.h file. so it looks like :

#ifndef __ADDIN_H_
#define __ADDIN_H_

#include "resource.h" // main symbols

#import "D:\Program Files\Common Files\designer\MSADDNDR.TLB" raw_interfaces_only, raw_native_types, no_namespace, named_guids

#import "D:\Program Files\Microsoft Office\Office\MSWORD9.olb" rename_namespace("MSWORD"), rename("ExitWindows","WordExitWindows"), named_guids, raw_interfaces_only
using namespace MSWORD;

and then rebuild. Smile | :)

HTH,

'My capacity for happiness', he added, 'you could fit into a matchbox without taking out the matches first'.

- Marvin, the robot.

Amit Dey

sonork: 100:18407
msn: visualcdev