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You're right... I changed it from
<br />
myArray += sizeof(node*);<br />
to
<br />
myArray++;<br />
which may have been what I had when I was using integers, and everything works fine now.
Thanks everyone, I think I understand all of this a little better now.
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Exactly,
with this you are automatically pointing to the next element on your array.
But it actually is not the same as working with integers. because with integers you increase by one an interger that specify the index.
Im not 100% sure, but
<br />
myArray++;<br />
should be the same as
<br />
myArray += sizeof(node);
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?
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Why are you messing around with sizeof(). The normal way to access members of the array is:
cout << "The array contains..." << endl;<br />
<br />
cout << myArray[0]->toString() << endl;<br />
cout << myArray[1]->toString() << endl;<br />
cout << myArray[2]->toString() << endl;
This also has the advantage of keeping the myArray pointer, which you will need to delete the memory.
I'm not 100% sure what is happening in your old code, but by default the compiler will take ptr++ as moving ptr to the next element in the array. If one of the gurus reads they will probably be able to tell you, but I guess that to make your code work:
myArray+=sizeof(node*);
you would have to cast the myArray pointer to void*.
Peter
"Until the invention of the computer, the machine gun was the device that enabled humans to make the most mistakes in the smallest amount of time."
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Hello everyone,
I am developing a DLL project for Windows Mobile (C/C++). I have removed the UNICODE and _UNICODE definition from project --> settings. But build the following code, there is an error (compile could pass, but link can not pass),
error LNK2019: unresolved external symbol CreateDirectoryA referenced in function foo
<br />
#include "winbase.h"<br />
<br />
int foo()<br />
{<br />
CreateDirectory (L"hello", NULL);<br />
CreateDirectoryA ("hello", NULL);<br />
CreateDirectoryW (L"hello", NULL);<br />
<br />
return 0;<br />
}<br />
thanks in advance,
George
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Look at "winbase.h" header for typedef of CreateDirectory,
WINBASEAPI<br />
BOOL<br />
WINAPI<br />
CreateDirectoryA(<br />
__in LPCSTR lpPathName,<br />
__in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes<br />
);<br />
WINBASEAPI<br />
BOOL<br />
WINAPI<br />
CreateDirectoryW(<br />
__in LPCWSTR lpPathName,<br />
__in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes<br />
);<br />
#ifdef UNICODE<br />
#define CreateDirectory CreateDirectoryW<br />
#else<br />
#define CreateDirectory CreateDirectoryA<br />
#endif // !UNICODE
Regards,
Paresh.
-- modified at 0:42 Wednesday 22nd August, 2007
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Hi Paresh,
I have read that reply. In my situation, I invoke CreateDirectoryA directly, but why there is an unresolved link error?
I think even if UNICODE is not defined, I could invoke CreateDirectoryA directly, right?
regards,
George
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Thanks Paresh,
I suspect there is no implementation from Microsoft of CreateDirectoryA on Windows CE platform.
regards,
George
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George_George wrote: error LNK2019: unresolved external symbol CreateDirectoryA referenced in function foo
This is because you do not have Unicode defined.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Yes David,
I have not defined UNICODE. But if I do not define UNICODE, CreateDirectoryA should be linked. Why there is unresolved symbol error? Microsoft does not have the implementation for CreateDirectoryA for Windows CE?
regards,
George
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Hi,
I would really appreciate if anyone could help me with a project in which I want to write code for encoder. Can you guys help that what do I need for it?
I will be very much helped.
Thanks
C++Prog
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I want to know what do I need for starting up this project. If you guys can give me your ideas, all will be very much appreciated.
Thanks again
C++Prog
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SHJDU UYSJD DIFGD KJDDP DNDIF DDEEK JUFUD UDIKS UUDEP UIMHQ SUJDO SUBAF
Peter
"Until the invention of the computer, the machine gun was the device that enabled humans to make the most mistakes in the smallest amount of time."
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celllllllll wrote: Can you guys help that what do I need for it?
start with IPO: Input, Process, Output.
what do you want to encode?
how do you want to encode it?
what purpose do you want the output to fulfill?
encoding is changing one thing to another:
compression is a form of encoding to save space.
ecryption is a form of encoding to hide the output from undesirables.
serialization is a form of encoding to transfer a binary object as text
etc.
So simply asking for help in encoding, help me now, please, won't get you far. Start by defining the problem, define it well. Once you can define it, you start breaking it down to its parts. IPO is an archaic method, but it still works especially for new programmers. Break it down into sub groups of functional parts, each with an IPO definition, each does only their small part. Put it all together, and you have a program.
BUT, first you have to start by defining it.
_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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Thanks for such an inspirational answer. I really appreciate it.
I want to encode a video using Visual Studio C++. I want to get a compressed video as an output.
How do I start breaking it in parts? Do you mean should I start writing what I need to input, then process and then finally output?
I really appreciate the help.Thanks very much.
C++Prog
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celllllllll wrote: How do I start breaking it in parts? Do you mean should I start writing what I need to input, then process and then finally output?
have you got the video to input? if not, you start there, how do you get the video.
Once you have everything needed to get the video into the design, then you need to compress it.
Do you want industry standard compression? do you want to use 3rd party libraries to do the compression for you? do you want to write your own compression? Is it for archival? Is it for streaming videos across the network? do you need high compression over low-latency? The questions just keep adding up. You answer them, figure out what you need to do that and move on to the next.
Are you writing the display? DirectX? OpenGL? (someone else here is doing video to texture -- you two might help each other).
there are libraries to do video compression, but that may not be what you need.
_________________________
Asu no koto o ieba, tenjo de nezumi ga warau.
Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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Your question is a little vague; an encoder of what?
Steve
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I want to encode a video file.
C++Prog
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encode a video to do what ?
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I have made a dialog based MFC app but found a big problem. If someone is entering values into the edit boxes and then hits enter it closes the program. If you hit enter at all while the program is running and in focus it will end the program. How can I fix this?
Thanks
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You can override OnOK() (and possibly OnCancel()) and in your overridden method,
do nothing.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
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Hi I cannot find those functions anywhere. I have this
CDLIADlg dlg;
m_pMainWnd = &dlg;
INT_PTR nResponse = dlg.DoModal();
return FALSE;
Brings up the main dialog, but I can't find the OnOk or OnCancel in the main dialog
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They are virtual functions declared in the CDialog class. You can
add them through the class properties window or add them by hand
virtual void OnOK();
virtual void OnCancel();
...
void CDLIADlg::OnOK()
{
}
void CDLIADlg::OnCancel()
{
}Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Thanks so much problem is solved added them by hand much quicker!
Thanks again!
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simoncoul wrote: How can I fix this?
By reading here.
"A good athlete is the result of a good and worthy opponent." - David Crow
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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