Re: Small doubt - C / C++ / MFC Discussion Boards

Re: how to get the line number of exception (details) in a try catch(...) block

Matthew Faithfull17-Oct-07 0:15

17-Oct-07 0:15

Plain C++ doesn't have the reflection capabilities of C# so what you want to do, to be generic, requires the use of symbolic debug information. In other words you can do this but it's not straight forward and will only work in Debug builds with the PDB available. The full process of turning addresses into line numbers and a great deal more is explained in this book by John Robbins[^] and the associated source code will give you what you need. If you can find John's web site it should all be available for free download.

Nothing is exactly what it seems but everything with seems can be unpicked.

Re: how to get the line number of exception (details) in a try catch(...) block

Rocky#17-Oct-07 0:22

Rocky#

17-Oct-07 0:22

ok thanks!

Rocky

You can't climb up a ladder with your hands in your pockets.

Re: how to get the line number of exception (details) in a try catch(...) block

Mark Salsbery17-Oct-07 5:39

Mark Salsbery

17-Oct-07 5:39

Do the __FILE__ and __LINE__ macros help any?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: how to get the line number of exception (details) in a try catch(...) block

Rocky#21-Oct-07 19:29

Rocky#

21-Oct-07 19:29

__LINE__ macro gives the line in the catch block not the one from where the exception occurs... __FILE__ does give u the file name though

Rocky

You can't climb up a ladder with your hands in your pockets.

Re: how to get the line number of exception (details) in a try catch(...) block

Mark Salsbery23-Oct-07 8:03

Mark Salsbery

23-Oct-07 8:03

Rocky# wrote:
__LINE__ macro gives the line in the catch block not the one from where the exception occurs

Right. That's about all you get. You can always throw an exception that contains
useful source information, including using those macros.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Small doubt

kuttiam16-Oct-07 21:30

kuttiam

16-Oct-07 21:30

Hi,
Can any one tell me how to differentiate messagebox dialog from other dialogs.

Thanks in advance. Smile | :)

Re: Small doubt

chandu00416-Oct-07 21:59

chandu004

16-Oct-07 21:59

why do you have any of your dialogs which look like messagebox?

Re: Small doubt

Nelek16-Oct-07 22:04

Nelek

16-Oct-07 22:04

As the MessageBox comes from CWnd and CDialog is a CWnd derived class but "independant" you can try

CDialog* pDlg = (CDialog*) GetActiveWindow ();
if (pDlg->IsKindOf(RUNTIME_CLASS(CDialog)))
//you have a dialog
else
//you have another thing, maybe a messagebox, maybe a view, maybe a window

Another way to do the difference is the first member of both possibilites. By MessageBox the first member is a handler o a window hWnd, and in a DialogBox this handler is of the application instance hInstance

Hope it helps

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

Wink | ;)

Re: Small doubt

kuttiam17-Oct-07 19:07

kuttiam

17-Oct-07 19:07

Hi,
Thanks for ur reply.
I am trying to write a message box hook.
In that i need to differentiate the message box from other windows and dialogs.
I tried your suggestion but i could not achieve that Cry | :((

.

I appreciate your help. Smile | :)

Re: Small doubt

ThatsAlok17-Oct-07 1:37

ThatsAlok

17-Oct-07 1:37

kuttiam wrote:
Can any one tell me how to differentiate messagebox dialog from other dialogs.

MessageBox is type of dialog. but you don't need template to create it as it required by Dialog. plus a single api call i.e. MessageBox will create the message box for you!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

wstring to string question

monsieur_jj16-Oct-07 21:22

monsieur_jj

16-Oct-07 21:22

Hi all,

I made this function of getting a unicode MAPI property:

LPMESSAGE msg = NULL;
	wstring subj;
		HRESULT hrProperty;	
		LPSPropValue lpPropValue = NULL;
		
		hrProperty = HrGetOneProp(m_Message->Interface(), PR_SUBJECT_W, &lpPropValue);
		if (hrProperty == S_OK)
		{	
			subj = static_cast<wstring>(lpPropValue[0].Value.lpszW);
		}
		
	return _bstr_t(subj.c_str());

now I need the subj value for SetSubject(Subj.c_str(),codePage) from altmime however when I pass the value of subj to a string it loses it's contents(I am retrieving asian characters) it turns into ??? from the original value.

Help please,
Jj

Re: wstring to string question [modified]

ThatsAlok17-Oct-07 1:36

ThatsAlok

17-Oct-07 1:36

monsieur_jj wrote:
when I pass the value of subj to a string it loses it's contents(I am retrieving asian characters) it turns into ??? from the original value.

offcourse it will lose every thing as string can have 256 value per character and wide string have 2 power <superscript>16 values per character. so if you are using asian character set ..then work with wide string only

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

How to display only console window and hiding dialogbox?

mss8116-Oct-07 21:17

mss81

16-Oct-07 21:17

Hi,

In this MFC dialog base project, I used command line arguments. I want to make my application like, when user give /silent argument from command line, only console window should be display else
normal dialog box. I used AllocConsole function in OnInitDialog function. Using that it displays both the windows viz cosole and dialog.

I used the following lines :

if (!AllocConsole())
AfxMessageBox("Failed to create the console!", MB_ICONEXCLAMATION);

please help me ...?

Regards,
Mayuresh

Re: How to display only console window and hiding dialogbox?

Nelek16-Oct-07 21:55

Nelek

16-Oct-07 21:55

Does ShowWindow (FALSE) help when used in your dialog?

Re: How to display only console window and hiding dialogbox?

mss8116-Oct-07 22:05

mss81

16-Oct-07 22:05

No, ShowWindow(SW_HIDE) does not work

Re: How to display only console window and hiding dialogbox?

Nelek17-Oct-07 0:05

Nelek

17-Oct-07 0:05

It should... but ok.

Then... what about getting the DesktopRect and moving the dialog with MoveWindow (...) or with SetWindowPos(...) outside the visible area?

Re: How to display only console window and hiding dialogbox?

ThatsAlok17-Oct-07 20:36

ThatsAlok

17-Oct-07 20:36

Nelek wrote:
It should... but ok.

he is right, SW_HIDE will not work for Dialog bix, reason behind it is that when OnIntDialog complete it call it show the Dialog Box. so you have write some other mechanism to do so.. see here http://www.codeproject.com/dialog/dlgboxtricks.asp[^]

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Re: How to display only console window and hiding dialogbox?

ThatsAlok17-Oct-07 20:36

ThatsAlok

17-Oct-07 20:36

http://www.codeproject.com/dialog/dlgboxtricks.asp[^]

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Re: How to display only console window and hiding dialogbox?

Mark Salsbery17-Oct-07 5:51

Mark Salsbery

17-Oct-07 5:51

You have access to the command line arguments at startup.

If you determine you don't want a GUI window to show then you shouldn't
show the window.

Create your main window without the WS_VISIBLE style. If you want the main
window to show, use ShowWindow(SW_SHOW).

If your main window is a modal dialog, don't call DoModal().

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: How to display only console window and hiding dialogbox?

ThatsAlok17-Oct-07 20:37

ThatsAlok

17-Oct-07 20:37

Mark Salsbery wrote:
If your main window is a modal dialog, don't call DoModal().

he seems to programming in OnInitDialog instead of OnInitInstance

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

string convertion

Jhony george16-Oct-07 20:55

Jhony george

16-Oct-07 20:55

hai..,
i am trying to create an MSMQ. in this i am having char* string value....now i want to convert it to LPWSTR string ...how to convert this...

is any one knows reply me....

Born to win...!

Re: string convertion

Hamid_RT16-Oct-07 21:08

Hamid_RT

16-Oct-07 21:08

See MultiByteToWideChar.

Re: string convertion

jhwurmbach16-Oct-07 21:08

jhwurmbach

16-Oct-07 21:08

Try ::mbtowcs
And be sure to read the texts about conversion linked in that MSDN-Article.

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Re: string convertion

David Crow17-Oct-07 3:09

David Crow

17-Oct-07 3:09

Have you considered the A2W() macro?

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: string convertion

Jhony george16-Oct-07 21:13

Jhony george

16-Oct-07 21:13

thanks for ur help dears,

i solved the issue..

Born to win...!

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