Re: COM with VC++ - C / C++ / MFC Discussion Boards

how to Open a file on right click with my application

mah_pankaj7-Oct-09 2:06

7-Oct-09 2:06

Hi,
I am working on a GUI appliction on .Net using C++. In this application we create some files like wordpad. Now I want to right click on file and then open with my application. Can you tell me which trigger or event to identify this. As I am able to open the file but thats a default file not the one I am willing to open. So I need to Identify the event or message.
Thanks in Advance

Re: how to Open a file on right click with my application

Sarath C7-Oct-09 2:31

Sarath C

7-Oct-09 2:31

Check this - Associate File Extension with Shell OPEN command and Application[^]

-Sarath.

My blog - Sharing My Thoughts

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UsedRange

rdop7-Oct-09 1:58

rdop

7-Oct-09 1:58

Hi All

I have a problem to get rows and column in excel.i use code this for get rows and column.

long row,col;
Excel::Ranger pRange = sheet1->UsedRange;
COleSafeArray sare(pRange->GetValue());
sare.GetUBound(1,&row);
sare.GetUBound(2,&col);

it's working fine for me.But when excel sheet content start from row 2 and column 23(row 2 and column 23 taken as a example),then row and col show "1".But actual range is row=2 and col=23.How can i get the row and col actual range.Plz help me

How to embed windows xp visual styles

Danzy837-Oct-09 1:57

Danzy83

7-Oct-09 1:57

Hi, is it possible to embed manifest file for windows xp visual styles
in my application using visual c++ 6? The only way I know of is to give the
manifest file the same as the executable and copy it into the directory where the executable is. But I want a way the manifest file will be embedded in the application using visual c++ 6.

Visual C++ 2005 embeds the manifest in the application. But I don't know what and how I should do it int visual c++ 6 so that the manifest will be embedded in the application. Please Help.

Re: How to embed windows xp visual styles

Rajesh R Subramanian7-Oct-09 2:03

Rajesh R Subramanian

7-Oct-09 2:03

Hi,

Yes, you can use a manifest to enable XP style.

See MakeXP[^]

Articles that may be of your interest:

Applying Windows XP Visual Styles to Applications[^]
Using Windows XP Styles in your MFC/WIN32 Applications[^]

It is a crappy thing, but it's life -^ Carlo Pallini

Re: How to embed windows xp visual styles

Sarath C7-Oct-09 2:35

Sarath C

7-Oct-09 2:35

Alternatively check this - Enabling Visual Styles[^]

-Sarath.

My blog - Sharing My Thoughts

Rate the answers and close your posts if it's answered

COM with VC++

hrishiS7-Oct-09 1:45

hrishiS

7-Oct-09 1:45

Hi to All,

I like to learn things.I have learn VC++. Was working in console based application. little bit of MFC too.
Now I would like to learn COM with VC++. that's what I got a suggestion from my friend.
I search the net, but didn't get any idea of it. So please help me with the following

What do we mean by COM programming. An example would be great.
Any docs or links to learn that...in VC++

thanks a lot

-----------------------------
I am a beginner

Re: COM with VC++

Roger Stoltz7-Oct-09 1:52

Roger Stoltz

7-Oct-09 1:52

You can read about COM at wikipedia for a brief orientation here[^].

As for how to do COM, I suggest you have a look at some articles below the COM section here at CodeProject: http://www.codeproject.com/KB/COM/
Michael Dunn has written a nice introduction to COM that can be found http://www.codeproject.com/KB/COM/comintro.aspx

Re: COM with VC++

hrishiS7-Oct-09 2:14

hrishiS

7-Oct-09 2:14

thanks for yout reply...I will go through it...
One doubt, please clear me.
As a basics, i have read about COM as ...."sharing binary code across different applications and languages"

Then what is the difference between COM, a dll file and ATL?
thanks in advance

-----------------------------
I am a beginner

Re: COM with VC++

CPallini7-Oct-09 2:22

CPallini

7-Oct-09 2:22

hrishiS wrote:
Then what is the difference between COM, a dll file and ATL?

COM (Component Object Model) is a specification for building (and consuming) reusable binary objects (components).

DLL (Dynamic Linking Library) is a collection of functions, in binary form, linked at run-time with your executable.

ATL (Active Template Library) is a library of C++ templates (i.e. source code) used as a tool (or framework) for COM development.

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: COM with VC++

Roger Stoltz7-Oct-09 2:32

Roger Stoltz

7-Oct-09 2:32

Could not have said it better myself Carlo. Wink | ;)

I could possibly have added that ATL may be used for developing more than just COM components as it contains templates for e.g. windows.
But ATL is my preferred way of developing COM components.

"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown

Re: COM with VC++

CPallini7-Oct-09 3:30

CPallini

7-Oct-09 3:30

Thank you.
Smile | :)

Re: COM with VC++

Rajesh R Subramanian7-Oct-09 1:53

Rajesh R Subramanian

7-Oct-09 1:53

hrishiS wrote:
Any docs or links to learn that...in VC++

Inside COM by Dale Rogerson[^]
Essential COM by Don Box[^]

Stuff by Mike:

Introduction to COM - What It Is and How to Use It.[^]
Introduction to COM Part II - Behind the Scenes of a COM Server[^]

Jeff Glatt series: COM in plain C[^] (first part - you can work out the rest of the links)

CodeProject has a COM section[^]

It is a crappy thing, but it's life -^ Carlo Pallini

Re: COM with VC++

CPallini7-Oct-09 1:57

CPallini

7-Oct-09 1:57

You may start reading this article [^].
Smile | :)

Re: COM with VC++

kilt8-Oct-09 23:25

kilt

8-Oct-09 23:25

Everything is in MSDN about COM
Avoid everything else (not professional...)

Windows 2008 giving a screen telling user the process is stil running and preventing the machine to log-off [modified]

Kushagra Tiwari7-Oct-09 1:29

Kushagra Tiwari

7-Oct-09 1:29

Hello all,

While trying to abort user logoff and shutdown programatically for windows 2008 , windows 7 and then running a process after it results in a screen with a message that following processes are still running and process abc.exe is preventing system to logoff. How can I disable this screen so that I can handle the process of Logoff and thus execute my processes accordingly.

Regards
Kushagra

modified on Wednesday, October 7, 2009 8:02 AM

Re: Windows 2008 giving a screen telling user the process is stil running and preventing the machine to log-off

Sarath C7-Oct-09 2:58

Sarath C

7-Oct-09 2:58

In my knowledge it's not possible to disable this service. It's actually an information window provided by OS to make the user aware of which applications are blocking shutdown.

Application Shutdown behavior is Changed since Windows Vista. In Windows XP, applications are allowed to veto WM_QUERYENDSESSION without displaying any UI indicating why they need to cancel shutdown. These “silent shutdown failures” are highly frustrating to users, who often take a minute or two to realize that shutdown has failed because no UI was displayed. This is no longer permitted.

Applications that must block shutdown should use the new shutdown reason API. Also applications should no longer rely on always being able to block shutdown. Windows Vista/7 will also not allow console applications or applications that have no visible top-level windows to block shutdown

The details are given in The documentation is available in MSDN website.[^]

Also check this article - Describing Windows XP and Vista Shutdown in Application context[^]

-Sarath.

My blog - Sharing My Thoughts

Rate the answers and close your posts if it's answered

Re: Windows 2008 giving a screen telling user the process is stil running and preventing the machine to log-off

Kushagra Tiwari7-Oct-09 3:32

Kushagra Tiwari

7-Oct-09 3:32

Thanks Sarath , You really are a life savior Smile | :)

Cheers,
Kushagra

Is there any posssibility to see the function definitions of dll file?

bahareh6557-Oct-09 0:37

bahareh655

7-Oct-09 0:37

Hi all

As you know, we can export a dll's functions using "dumpbin.exe" tool.
Now, I want to know if Is there any posssibility to see the function definitions of dll file?
That is, a complete definition of the functions with their input and output arguments in the dll?

THX.

Re: Is there any posssibility to see the function definitions of dll file?

KarstenK7-Oct-09 1:19

KarstenK

7-Oct-09 1:19

look in the header file (of the dll-code) Laugh | :laugh:

Press F1 for help or google it.
Greetings from Germany

Re: Is there any posssibility to see the function definitions of dll file?

Richard MacCutchan7-Oct-09 2:34

Richard MacCutchan

7-Oct-09 2:34

bahareh655 wrote:
Now, I want to know if Is there any posssibility to see the function definitions of dll file?
That is, a complete definition of the functions with their input and output arguments in the dll?

I do not think this is possible unless the dll contains debug information with these details. Function definitions are placed in (source) header files for use by the compiler, but are not retained in the object modules.

Re: Is there any posssibility to see the function definitions of dll file?

David Crow7-Oct-09 2:55

David Crow

7-Oct-09 2:55

bahareh655 wrote:
That is, a complete definition of the functions with their input and output arguments in the dll?

See here for possibilities.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: Is there any posssibility to see the function definitions of dll file?

kilt8-Oct-09 23:26

kilt

8-Oct-09 23:26

Simply disassemble and see the call stack

CRICHEDITCTRL 'S BORDER

prithaa7-Oct-09 0:30

prithaa

7-Oct-09 0:30

Hello,

I have used the following to make a cricheditctrl window

CRect Rect(0,20,20,40);
CRichEditCtrl::Create(WS_VISIBLE|WS_BORDER ,Rect, this,index);

The window is drawn but the border is not seen.

I want the border

Pritha

Excel Automation: iDispatch->Invoke method

NarVish6-Oct-09 23:42

NarVish

6-Oct-09 23:42

Hi,

I am not much familiar with COM and COM dlls. Below Invoke function of iDispatch is not returning the expected result. May be I didn't send the valid parameters. code is here, pls suggest the corrections:

_ATL_FUNC_INFO SheetCalculateInfo = { CC_CDECL, VT_EMPTY, 1, { VT_DISPATCH } };
BEGIN_SINK_MAP(ExcelBookEventHandler)
SINK_ENTRY_INFO(1, __uuidof(Excel::WorkbookEvents), 0x0000061b, &ExcelBookEventHandler::SheetCalculate, &SheetCalculateInfo)
END_SINK_MAP()
void _stdcall SheetCalculate(IDispatch *iDispatch)
{
static DISPID dispid = 0;
wchar_t *ucName = L"Calculate";
HRESULT result = iDispatch->GetIDsOfNames(IID_NULL, &ucName, 1,LOCALE_SYSTEM_DEFAULT, &dispid);

DISPID dispidMethod;
DISPPARAMS dispparms;
VARIANTARG varg[1];
VARIANT vResult;
EXCEPINFO excep;

VariantInit(&varg[0]);
VariantInit(&vResult);

// Setup parameters
dispparms.rgvarg = varg;
dispparms.rgdispidNamedArgs = NULL;
dispparms.cArgs = 1;
dispparms.cNamedArgs = 0;

varg[0].vt = VT_I4 ;
varg[0].lVal = dwParameter;

hr = pdispObj->Invoke(dispidMethod, IID_NULL,
LOCALE_USER_DEFAULT,
DISPATCH_METHOD, &dispparms, &vResult,
&excep, NULL);

dwResult = vResult.lVal;
}

Above SheetCalculate function gets fired whenever there is change in function(like =sum(A1,A2)) result. My aim is to get the function result value. I'm expecting function result in dwResult variable. But couldn't able to get that. Please guide me to read the function result. Thanks in advance.

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