Can I enforce the IntelliSence databese rebuild in VS2005? - C / C++ / MFC Discussion Boards

Re: Help on creating .exe for another PC that has no Visual Studio

Llasus23-Aug-07 22:31

Llasus

23-Aug-07 22:31

Thank you for the article. I'm still new with VC++ and this is very helpful. Thank you for the help! Big Grin | :-D

string::substr -- allocate on heap?

devvvy23-Aug-07 15:45

devvvy

23-Aug-07 15:45

Hi
STL string class "substr" method allocates on the heap? I was watching memory window that seems to be true - that the returned string has an entirely different address (relative to input string)

<br />
string str("Hello");<br />
...<br />
str.substr(lastPos, pos - lastPos)<br />

Thanks!

Re: string::substr -- allocate on heap?

User 58385223-Aug-07 20:11

User 583852

23-Aug-07 20:11

From MSDN substr() page ...

Return Value
A substring object that is a copy of elements of the string operand beginning at the position specified by the first argument.

It IS a copy. Different implementations of the STL handle allocating memory for strings differntly but there is a good chance its allocating memory on the heap.

With most versions of Visual Studio you get the full source code for the STL so you could easily answer this yourself with some investigation

CPU Time of a process

DevMentor.org23-Aug-07 12:05

DevMentor.org

23-Aug-07 12:05

Does anyone know what API I can use to determine the CPU time used by a process? This is not the same as elapsed time!

Yours Truly, The One and Only!

Re: CPU Time of a process

DevMentor.org23-Aug-07 12:15

DevMentor.org

23-Aug-07 12:15

Alright it seem the GetProcessTimes API does what I was looking for Poke tongue | ;-P

Yours Truly, The One and Only!

Re: CPU Time of a process

aks.23-Aug-07 15:29

aks.

23-Aug-07 15:29

You can also use PDH library for this.

AJay

Re: CPU Time of a process

DevMentor.org23-Aug-07 15:59

DevMentor.org

23-Aug-07 15:59

Great! Thanks Ajay, I will keep this in mind for future uses.

Yours Truly, The One and Only!

Can I enforce the IntelliSence databese rebuild in VS2005?

oleg6323-Aug-07 11:40

oleg63

23-Aug-07 11:40

Hi,

I'm using a C++(native) in VS2005. And when I manually add some member variables or methods the intellisence can't handle this and when I'm trying to build the application(MFC executable) it crushes the VS2005 IDE.

After that I've to manually delete the intellisence database file (*.ncb) and open solution for compilation again.

The question is:
- Is there any way (some hot key or IDE macro) to enforce manually intellisence update from the VS2005 IDE?
This would solve my problem.

Thanks,
Oleg.

API For Monitoring Events on a Folder

vikrant kpr23-Aug-07 10:38

vikrant kpr

23-Aug-07 10:38

Hey Friends

I rememeber we had a way by which we can monitor changes in a folder.

I even implemented it long time back.

i do not remember anything about it now

Any idea of the api / way ?

Regards

Re: API For Monitoring Events on a Folder

Michael Dunn23-Aug-07 10:45

Michael Dunn

23-Aug-07 10:45

Check out FindFirstChangeNotification() and ReadDirectoryChangesW()

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Hungarian notation FTW

Re: API For Monitoring Events on a Folder

vikrant kpr23-Aug-07 10:52

vikrant kpr

23-Aug-07 10:52

Brilliant
Thanks Smile | :)

Re: API For Monitoring Events on a Folder

ThatsAlok23-Aug-07 20:12

ThatsAlok

23-Aug-07 20:12

vikrant kpr wrote:
I rememeber we had a way by which we can monitor changes in a folder.

ReadDirectoryChangeW[^]

"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
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Re: API For Monitoring Events on a Folder

Hamid_RT24-Aug-07 3:02

Hamid_RT

24-Aug-07 3:02

See How to get a notification if change occurs in a specified directory [^] does helpful?

WhiteSky

How change the menu background color?

Cris23-Aug-07 10:30

Cris

23-Aug-07 10:30

Hello,

I have to find how change the menu background color (menubar and menuitems), but nothing yet.
On true, I want to change my dialog based app background color (I am using SetDialogBkColor() method), but the menu (I have a menu in the dialog too) continue with the default system background color.
So, I only want to change the menu background color (same color of my dialog background).

Could anybody help me?

Thanks,
Cris.

Re: How change the menu background color?

Mark Salsbery23-Aug-07 10:46

Mark Salsbery

23-Aug-07 10:46

Cris wrote:
SetDialogBkColor

... is obsolete. Handling WM_CTLCOLOR is a better choice into the future.

For the menus, maybe take a look at deriving a class from CMenu and making the menu owner drawn.

See here[^] for lots of examples.

Mark

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

Re: How change the menu background color?

Hamid_RT24-Aug-07 3:02

Hamid_RT

24-Aug-07 3:02

See Owner Drawn Menu With Free Color '& Font[^]

WhiteSky

TCHAR to char *

Rajesh_Parameswaran23-Aug-07 9:00

Rajesh_Parameswaran

23-Aug-07 9:00

Hi,
I need to convert TCHAR to char*.

TCHAR buff[512]={NULL};
char tempBuff[512]={NULL};
CString strTemp;

_stprintf(buff, _T("Hello World"));

strTemp = buff;

buff = strTemp.GetBuffer(strTemp.GetLength());

but buff seems to be null.

I'm unable to convert from TCHAR to char*. Using VC++6.0/MFC. UNICODE VERSION.

Thanks in Advance.

Rajesh

Re: TCHAR to char *

Mark Salsbery23-Aug-07 9:44

Mark Salsbery

23-Aug-07 9:44

Rajesh_Parameswaran wrote:
buff = strTemp.GetBuffer(strTemp.GetLength());

You can't convert a TCHAR* to a TCHAR[512] so that assignment won't work.

What are you trying to do? Do you need to convert the contents of the
TCHAR array to an array of char or just cast the pointer to the array to a different type?

Mark

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

Re: TCHAR to char *

Mark Salsbery23-Aug-07 9:49

Mark Salsbery

23-Aug-07 9:49

I didn't notice your tempBuff variable, so I assume you want something like this:

   TCHAR buff[512]={NULL};
   char tempBuff[512]={NULL};

   _stprintf(buff, _T("Hello World"));

   strcpy(tempBuff, CT2CA(buff));

Mark

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

Re: TCHAR to char *

Michael Dunn23-Aug-07 10:49

Michael Dunn

23-Aug-07 10:49

Use an ATL conversion macro:

CString s = _T("Hello world!");
const char* p = T2CA(LPCTSTR(s));

More here[^] and here[^]

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Hungarian notation FTW

Re: TCHAR to char *

Mark Salsbery23-Aug-07 11:17

Mark Salsbery

23-Aug-07 11:17

Mike,

That doesn't work on VS 2005 which is why I coded my example like I did (besides
trying to fit the OP's code).

How does one force the macros to work old-style like you've shown?

Thanks,
Mark

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

Re: TCHAR to char *

Michael Dunn23-Aug-07 12:15

Michael Dunn

23-Aug-07 12:15

What about it doesn't work in VC8? Does CT2CA work instead?

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Hungarian notation FTW

Re: TCHAR to char *

Mark Salsbery23-Aug-07 12:40

Mark Salsbery

23-Aug-07 12:40

Note this is just for me, in one test application - MFC/Unicode/VS2005.
I ask because I don't know Smile | :)

T2CA doesn't compile.

CT2CA works like this

   char buff[80];
   strcpy(buff, CT2CA(_T("Hello World")));

but doesn't work like this

   CString s = _T("Hello world!");
   const char* p = CT2CA(LPCTSTR(s));
   // p is invalid here

Here's a sample from ATL and MFC String Conversion Macros[^]

// Example 3
// Incorrect use of conversion macros.

void ExampleFunctionW( LPCWSTR pszW )

{
 // Create a temporary instance of CW2A,
  
 // save a pointer to it and then delete
 // the temportary instance.
   
 LPCSTR pszA = CW2A( pszW );
 // The pszA in the following line is an invalid pointer,
 // as the instance of CW2A has gone out of scope.
 ExampleFunctionA( pszA );

}

In the section "A Warning Regarding Temporary Class Instances" there's more details.

I just don't know how to use the old ones, which it states are still supported.
I'm missing some detail somewhere Smile | :)

Mark

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

Re: TCHAR to char *

Mark Salsbery23-Aug-07 12:45

Mark Salsbery

23-Aug-07 12:45

I found it - need a macro.

USES_CONVERSION;
CString s = _T("Hello world!");
const char* p = T2CA(LPCTSTR(s));
// p is ok to use until the end of the function!  Yay!

That's better Smile | :)

To recap:

USES_CONVERSION;
CString s = _T("Hello world!");
const char* p1 = CT2CA(LPCTSTR(s));
// p1 BAD!
const char* p2 = T2CA(LPCTSTR(s));
// p2 GOOD!

Mark

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

Re: TCHAR to char *

Rajesh_Parameswaran24-Aug-07 0:47

Rajesh_Parameswaran

24-Aug-07 0:47

Hi Mark/Micheal,

Thanks for the response.

I'm still having problem in using the macro USES_CONVERSION.

I'm not using ATL in my project.

Could you let me know an alternative solution with VC++6.0 / MFC?

thanks in advance,

Rajesh

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