C / C++ / MFC Discussion Boards

David Crow15-Apr-04 4:24

15-Apr-04 4:24

If you have Windows 2000 or XP, look at the Performance tab of Task Manager to see the machine's memory usage. What does it look like before and during the program's execution?

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: Out-Of-Memory

Gurra_Koo15-Apr-04 5:26

Gurra_Koo

15-Apr-04 5:26

Every thing but full...

Re: Out-Of-Memory

David Crow15-Apr-04 5:29

David Crow

15-Apr-04 5:29

Which makes no sense. Look at the Task Manager before your program runs, write down the memory-related numbers. Look at the Task Manager while your program runs, write down the memory-related numbers. Compare those numbers. What do they tell you?

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: Out-Of-Memory

Gurra_Koo15-Apr-04 5:32

Gurra_Koo

15-Apr-04 5:32

That i've got plenty of memory left...

Re: Out-Of-Memory

David Crow15-Apr-04 5:34

David Crow

15-Apr-04 5:34

Ok, can you post the exact verbiage of the out-of-memory message?

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: Out-Of-Memory

Gurra_Koo15-Apr-04 5:39

Gurra_Koo

15-Apr-04 5:39

It comes in a messagebox:
Unhandled exception at 0x77e73887 in net32.exe: Microsoft C++ exception: CMemoryException @ 0x00f5f3a4.

Re: Out-Of-Memory

David Crow15-Apr-04 6:52

David Crow

15-Apr-04 6:52

Sounds like you need to compile in debug mode, and use F5 to start the program.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: Out-Of-Memory

Antony M Kancidrowski15-Apr-04 5:17

Antony M Kancidrowski

15-Apr-04 5:17

What I meant was are you allocation memory to data statically or dynamically.

i.e.

char data[1000000];      // Or some large numbers

char* pdata;

pdata = new char[1000000];
delete [] pdata;

If you are running through the debugger you should be able to see what it is that is failing to allocate. If you look at the call stack, what is being called?

Ant.

Re: Out-Of-Memory

Gurra_Koo15-Apr-04 5:39

Gurra_Koo

15-Apr-04 5:39

It's a malloc call. Trying to allocate 22 bytes..

Re: Out-Of-Memory

David Crow15-Apr-04 6:54

David Crow

15-Apr-04 6:54

If this is a C++ program use new/delete instead.

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: Out-Of-Memory

Antony M Kancidrowski15-Apr-04 8:02

Antony M Kancidrowski

15-Apr-04 8:02

When you look at the call stack is it calling the same function over and over again?

I.e. trying to allocate 22bytes over and over again?

Ant.

Re: Out-Of-Memory

antlers15-Apr-04 11:37

antlers

15-Apr-04 11:37

You may have corrupted the heap.

Usually this is because you've written to an uninitialized pointer, or written before/beyong the end of an array or object that you've previously allocated on the heap.

Change the default color in my CDialog

anderslundsgard15-Apr-04 0:50

anderslundsgard

15-Apr-04 0:50

How may I change the default color in my CDialog with all my cildren-windows ( CButtons, CTabCtrl, … )

...and justice for all

APe

Re: Change the default color in my CDialog

GermanGeorge20-Apr-04 23:14

GermanGeorge

20-Apr-04 23:14

perhaps the is a better way, but i would subclass all objects
and overwrite the wm_ctlcolor method of each object

Re: Change the default color in my CDialog

anderslundsgard21-Apr-04 0:18

anderslundsgard

21-Apr-04 0:18

OK!! Thanks

Any suggestion how to make my dlg RGB(255,0,0) ?

...and justice for all

APe

Re: Change the default color in my CDialog

GermanGeorge21-Apr-04 0:45

GermanGeorge

21-Apr-04 0:45

for example:

HBRUSH CCtlcoloDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
CBrush *brush = new CBrush(HS_BDIAGONAL,RGB(200,0,0));
return (HBRUSH)(brush->GetSafeHandle());
}

i would declare and construct the brush outside the OnCtlColor Method

Re: Change the default color in my CDialog

anderslundsgard21-Apr-04 0:56

anderslundsgard

21-Apr-04 0:56

You're the King and made my Day - Thanks

...and justice for all

APe

Variable number of parameters

sschilachi15-Apr-04 0:49

sschilachi

15-Apr-04 0:49

How do I write a function that has a variable number of parameters. Ideally I would like the first parameter to be an integer, and then that number of parameters must be entered.

For example

function(5,1,2,3,4,5)
or
function(3,1,2,3)

Thanks

Re: Variable number of parameters

irshad_bukhari15-Apr-04 1:01

irshad_bukhari

15-Apr-04 1:01

for variable no. of arguments use va_arg, look into MSDN for more details

Re: Variable number of parameters

toxcct15-Apr-04 2:34

toxcct

15-Apr-04 2:34

return_type fonction (...);

the '...' is the C style to say that th function can have a variable number of parameters.

if you want fixed parameters, with a variable list below , do this (printf() function for example):

<font style="color:blue;">int</font> printf(<font style="color:blue;">const char</font>*, ...);

To access such parameters, use the macros va_start(), va_arg() and va_end(), plus the va_list type.

TOXCCT >>> GEII power

Re: Variable number of parameters

Mike Dimmick15-Apr-04 3:01

Mike Dimmick

15-Apr-04 3:01

In this particular case:

int function( int nParams, ... );

and then use va_list:

int function( int nParams, ... )
{
   int argValue; 
 
   va_list args;
   va_start( args, nParams );
 
   for ( int nParam = 0; nParam < nParams; ++nParam )
   {
      argValue = va_arg( args, int );
 
      // Do something with argValue
   }
}

Stability. What an interesting concept. -- Chris Maunder

IDE question

gu mingqiu14-Apr-04 23:55

gu mingqiu

14-Apr-04 23:55

Is there any wizard to add massege map for toolbar items in the IDE of VS .NET?
There are only menu commands in property view.

How to add user defined buttons to Property Sheet?

P_JAYAPRAKASH14-Apr-04 23:45

P_JAYAPRAKASH

14-Apr-04 23:45

Hi
In my property sheet, i disabled all default property sheet buttons. Now i want to add my own buttons to Property sheet. How to implement this?

Thanks
JP

ALL THINGS ARE POSSIBLE UNTIL THEY ARE PROVED IMPOSSIBLE-AND EVEN THE IMPOSSIBLE MAY ONLY BE SO,AS OF NOW

Re: How to add user defined buttons to Property Sheet?

grigsoft15-Apr-04 0:07

grigsoft

15-Apr-04 0:07

There is no easy way - you will have to add it one-be-one, after getting pointer to sheet window itself. I have not used it for a long time, but probably you have to do it from OnInitDialog.
I'm using my own class, which is dialog based (so you use template for it), and handles switches of pages. Here is screenshot of typical complex dialog example, using this approach: http://www.grigsoft.com/ws000.gif[^]. If somebody is interested, I could probably post an article on CP about it - I will just clean up the code a bit.

Igor Green
http://www.grigsoft.com/ - files and folders comparison tools

Virtual Ports?

Prakash Nadar14-Apr-04 23:25

Prakash Nadar

14-Apr-04 23:25

Is there any meaning in setting baud rate to virtual serial ports ? Do they really work?

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.