C / C++ / MFC

Re: VC++ 6.0 runs out of "temporary files" space on C drive

28-Nov-07 6:38

Vaclav_Sal wrote:
I am unable to find where to change this to other drive.

The TEMP environment variable, perhaps?

"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

Vaclav_28-Nov-07 6:58

Vaclav_

28-Nov-07 6:58

But which one? Under what user?
Pardon my ignorance - but should that be an option in application and not in OS?
I am running Windoze 2000 Advanced Server and see few of the TEMP directories
- under each user.
I guess administrator would be the one since I log on as such.
I hope other applications don't complain.

move up call stack one level

Andy H28-Nov-07 6:14

Andy H

28-Nov-07 6:14

I am writing code to track down memory leaks in our program. I am doing this by overloading the new(size_t), new[](size_t), delete(size_t) and delete[](size_t) functions so that I can keep track of which calls to new do not have a corresponding delete. This is all working well.

Now to my question, try as I might I cannot get the callers __FILE__ and __LINE__ information which I also need. I have tried #define new new(__FILE__,__LINE__) etc... but this is not compatible with existing code. I therefore feel that at some point in the call to new and new[], etc... that I need to move up the call stack a level to the caller so as I can obtain the __FILE__ and __LINE__ information from the stack page of interest.

Does anyone have any example code of how this can be done, please?

David Crow28-Nov-07 6:21

28-Nov-07 6:21

Andy H wrote:
I have tried #define new new(__FILE__,__LINE__) etc... but this is not compatible with existing code.

Just for my own edification, why not?

led mike28-Nov-07 6:25

led mike

28-Nov-07 6:25

Andy H wrote:
I am writing code to track down memory leaks in our program.

Is there some reason you don't use a tool that finds memory leaks?

maciu202028-Nov-07 7:45

maciu2020

28-Nov-07 7:45

I don't get, how do you want to get file and line with stack trace, but you can obtain your return address with

<br />
void *lpReturnAddress;<br />
__asm<br />
{<br />
  mov lpReturnAddress, DWORD PTR[esp]<br />
}

How Create and unse a Global Var

Andy H28-Nov-07 11:07

Andy H

28-Nov-07 11:07

Thanks, I hadn't thought of assembler code. The following did the trick:

unsigned* my_ebp;<br />
__asm<br />
{<br />
mov eax, ebp<br />
mov dword ptr [my_ebp], eax<br />
}

mouse whell scroll

Tara1428-Nov-07 5:27

Tara14

28-Nov-07 5:27

Hi,

I am using CResizableFormView for my Form and it has been derived from CFormView. The mouse wheel scroll seems to have got de-activated. In another application that uses just CFormView, the mouse wheel movement is automatically transfered to the scroll function.

How do I implement this in CResizableFormView?

There is also something else that I would like to do :
When the button 'Results' is clicked, the Form should automatically scroll to that part where the results are visible. Just like in web-pages. Please can you give me an idea how this may do done?

Thanks.

Fortitudine Vincimus!

Re: mouse whell scroll

Nelek28-Nov-07 22:01

Nelek

28-Nov-07 22:01

You can use the OnMouseWheel and call OnVScroll, or SetScrollPosition

Greetings.

--------
M.D.V. Wink | ;)

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
“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson

Re: mouse whell scroll

Tara1430-Nov-07 0:09

Tara14

30-Nov-07 0:09

Thanks.

Please can you tell me how to get hold of the windows scroll bars. I guess I must use

CScrollBar * bar = new CScrollBar;
bar->SetScrollPos(100,TRUE);

But before calling SetScrollPos, I must get 'bar' to point to the CFormView's vertical scroll bars. What is the correct way to do this?

Thanks.

Fortitudine Vincimus!

Schehaider_Aymen28-Nov-07 4:55

Re: How Create and unse a Global Var [modified]

28-Nov-07 4:55

Hi All,
My quest is simple, Im using MFC under VS 6.0
I wanna create some Golbale Variables . So how could i create a Golbale Variable under MFC? and in which Class. My Prog is named AutoParall so i have Classes like CAutoParallApp and so on.

thank you .

CPallini28-Nov-07 5:14

CPallini

28-Nov-07 5:14

you have already an example of it:
The Application Wizard defines the global variable theApp inside the application source file (i.e. AutoParallApp.cpp AutoParall.cpp in your case).
You can use theApp on any other source file (for instance in the MainFrm.cpp) provided you declare it as extern (i.e. extern CAutoParallApp theApp;) in the corrensponding header file (MainFrm.h in the previous example).
You can also make it visible to all sources, declaring it extern inside the StdAfx.h header (included by all sources of you project).

I hope that you can find out your way now.
Smile | :)

-- modified at 11:35 Wednesday 28th November, 2007

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.

Schehaider_Aymen28-Nov-07 5:23

28-Nov-07 5:23

Ok thx 4 the reply but in my case i have more than 45 Golbals Variables that i use in my Prog so how could i declare all the Vars, besides theApp Var. Sniff | :^)

CPallini28-Nov-07 5:35

CPallini

28-Nov-07 5:35

Blood_HaZaRd wrote:
i have more than 45 Golbals Variables

Too many!!!!!!!!!!!!! Poke tongue | ;-P

Anyway:
I suggest you to define the variables inside the application source AutoParall.cpp, for instance:

// this is AutoPArall.cpp

int iMyGlobalVar1 = 0;
DWORD dwMyGlobalVar2 = 0;
...

and to declare the variables themselves in the StdAfx.h file, for instance:

// this is StdAfx.h

extern int iMyGlobalVar1;
extern DWORD dwMyGlobalVar2;
...

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.

Schehaider_Aymen28-Nov-07 5:37

28-Nov-07 5:37

thank you, i ll try to follow yrs instructions.

Schehaider_Aymen28-Nov-07 5:49

28-Nov-07 5:49

Ok It works now, Cool | :cool:

thank you again for your kindness. Big Grin | :-D

David Crow28-Nov-07 6:22

28-Nov-07 6:22

Blood_HaZaRd wrote:
So how could i create a Golbale Variable under MFC?

In exactly the same way you would outside of MFC.

led mike28-Nov-07 6:29

led mike

28-Nov-07 6:29

This is a great example of what I struggle with in the forums. To some the purpose is to answer the question asked. I sometimes see a different problem. Like in this case I see a larger problem in that the OP "wants" to create some global variables. Since I mostly seem to be alone in this regard I guess that indicates that my perspective is wrong eh? Smile | :)

David Crow28-Nov-07 6:57