C / C++ / MFC Discussion Boards

Re: Class initialization and memory allocation

Rajesh R Subramanian4-Sep-08 20:25

Rajesh R Subramanian

4-Sep-08 20:25

Christian Flutcher wrote:
As you said all pointers are created on heap and others are on stack

Please, don't accuse me of saying such a thing. I never said it.

Heap memory will be allocated whenever you use the new operator for allocating memory or whenever you use dynamic memory allocation functions like malloc(), calloc(), etc., Smile | :)

Christian Flutcher wrote:
Person *personPointer = &person; // Where this will go?

Will be on the stack. Smile | :)

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Re: Class initialization and memory allocation

Christian Flutcher4-Sep-08 20:31

Christian Flutcher

4-Sep-08 20:31

Oops It was not you. My appologies.

Re: Class initialization and memory allocation

Rajesh R Subramanian4-Sep-08 20:42

Rajesh R Subramanian

4-Sep-08 20:42

No need to apologize, I was just kidding. Smile | :)

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Re: Class initialization and memory allocation

santhoshv844-Sep-08 19:27

santhoshv84

4-Sep-08 19:27

Hi,

1. In Person anotherPerson, nothing is initialized then it will get Person::Person() constructor. So 'Unknown' will be the name and '0' will be the age.

2. you may be knowing about the difference between *person and anotherPerson is References vs. Pointers.

The price of anything is the amount of life you exchange for it.

Thanks and Regards.
SANTHOSH V

Re: Class initialization and memory allocation

Christian Flutcher4-Sep-08 19:44

Christian Flutcher

4-Sep-08 19:44

Thank you santhosh. Your help is much appreciated.

problem with inno setup....

shaina22314-Sep-08 19:00

shaina2231

4-Sep-08 19:00

using innosetup while adding different folders (i.e "database" folder name )
i m using static path C:\database as destination folder so that during run time application gets files from database folder but if user or client machine has no directory such as C:\ or with different name then how it could be handled........

Re: problem with inno setup....

santhoshv844-Sep-08 19:12

santhoshv84

4-Sep-08 19:12

Hi,

Don`t ever give absolute path for files and database.
Always use relative path, then only your application can be safe if you are transferring it into client machine..

Use like this

CString path = "Database/data.mdb";

The price of anything is the amount of life you exchange for it.

Thanks and Regards.
SANTHOSH V

Re: problem with inno setup....

shaina22314-Sep-08 19:19

shaina2231

4-Sep-08 19:19

if i used path like this

CString path = "Database/data.mdb";

and i create exe and when install on other mashine and user run application from desktop then my application became unable to fine Database folder

error occurs
there is invalid path "C:\documents and settings\users\abc\desktop\database\data.mdb"

Re: problem with inno setup....

santhoshv844-Sep-08 19:31

santhoshv84

4-Sep-08 19:31

Hi,

You may not given the database file in the setup..
In the Setup file you need to add the database file.
you need to create a folder Database and add the database file in the folder.

The price of anything is the amount of life you exchange for it.

Thanks and Regards.
SANTHOSH V

Re: problem with inno setup....

SandipG 4-Sep-08 20:12

SandipG

4-Sep-08 20:12

You should use relative path.
To over come your problem you can use
GetModuleFileName[^] Function to get the executable path and add the path before "Database/data.mdb"
I hope that makes sense.

Regards,
Sandip.

create structure in exe and call in DLL

samrw4-Sep-08 18:48

samrw

4-Sep-08 18:48

in have created a struct info in my exe and i have set a value for cstringi.e. struct info{
CString name}.and i have set value for it in exe itself . Now i want to show that vale for name in my name editbox which is in DLL...
can any one tell how to call struct of exe into dll which show value of it(exe) in DLL..

Re: create structure in exe and call in DLL

_AnsHUMAN_ 4-Sep-08 19:12

_AnsHUMAN_

4-Sep-08 19:12

Shared Memory[^]

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: create structure in exe and call in DLL

JudyL_MD5-Sep-08 4:47

JudyL_MD

5-Sep-08 4:47

Why shared memory? The DLL and EXE run as the same process - shared memory is usually used to communicate between two different processes.

Judy

Re: create structure in exe and call in DLL

JudyL_MD5-Sep-08 4:46

JudyL_MD

5-Sep-08 4:46

If the DLL displays this editbox in response to a call from the EXE, just pass the string as one of the parameters to the call.

Judy

Re: create structure in exe and call in DLL

samrw7-Sep-08 22:02

samrw

7-Sep-08 22:02

any example or sample u can show me????

String

knowvc4-Sep-08 18:33

knowvc

4-Sep-08 18:33

Hi All

I have a String which have some information, i want to cut some part from this and stroe in different srting.

CString a;
a="d:\jhdjh\as.data"

i want to cut

\jhdjh\as.data

And store in

CString b;

plz help me

Re: String

User 2155974-Sep-08 18:38

User 215597

4-Sep-08 18:38

Check CString::Tokenize method[^]

Sohail

modified 21-Apr-21 21:01pm.

Re: String

Naveen4-Sep-08 18:42

Naveen

4-Sep-08 18:42

Use Find and Left functions of CString...

CString a= "d:\\jhdjh\\as.data";<br />
int nPos = a.Find( '\\' );<br />
CString b = a.Left( nPos );

nave

[OpenedFileFinder] [My Blog]

Re: String

knowvc4-Sep-08 18:58

knowvc

4-Sep-08 18:58

Hi

Thx's for help.I try this it is working.

But it is working i different way.It is storing d in string b.
I want to cut d and store \\jhdjh\\as.data

Plz help..

Re: String

Naveen4-Sep-08 19:10

Naveen

4-Sep-08 19:10

knowvc wrote:
I want to cut d and store \\jhdjh\\as.data

Sorry I misunderstood your question. If you want to do so, you can use the Right() function instead of Left().

If you are actually dealing with the file paths and you want to cut the drive information, its better to use PathSkipRoot[^]

nave

[OpenedFileFinder] [My Blog]

Re: String

knowvc4-Sep-08 19:43

knowvc

4-Sep-08 19:43

Thx's Again it's help me

Problem solved..

Re: String

knowvc4-Sep-08 19:50

knowvc

4-Sep-08 19:50

Hi one more problem i have how can i add drive name and string.
i mean i want to add drive name

c:\\

and

LPCTSTR lp

LPCTSTR lp=file\\file.ed and i want to add here

CopyFile(st, "c:\\" + lp ,TRUE);

Plz help me

Re: String

Naveen4-Sep-08 19:53

Naveen

4-Sep-08 19:53

Better use a CString.

CString cs = "c:\\";<br />
cs += "file\\file.ed";<br />
CopyFile(st, cs,TRUE);

nave

[OpenedFileFinder] [My Blog]

Re: String

knowvc4-Sep-08 20:33

knowvc

4-Sep-08 20:33

Thx's solved problem

Re: String

David Crow5-Sep-08 2:56

David Crow

5-Sep-08 2:56

Try AfxExtractSubString().

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