C / C++ / MFC Discussion Boards

Rudi66621-Aug-09 1:54

21-Aug-09 1:54

Hello Cedric,

thank you very much for your answer. i changed my array to a pointer array and now evertything works like it should. i knew the answer was pretty trivial but i somehow got stuck in the code Wink | ;-)

i have have more and more to get used to the whole pointer and polymorphism stuff in c++.
@sashoalm: thank you for the link. when i have some time left i will have a deeper look on polymorphism...

regards,
rudi

Re: c++ Inheritance Question

sashoalm21-Aug-09 1:12

sashoalm

21-Aug-09 1:12

That's what virtual functions[^] are for Smile | :)

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

VC++ Capture image using PMD Camera

maherjas21-Aug-09 0:12

maherjas

21-Aug-09 0:12

Hello All,

I have stucked in this problem.
I have a PMD Camera , How can I read the streaming and send any captured image to the server using WLAN in VC++ ?

Any start help pr sample code will be very helpfull.

Regards

Re: VC++ Capture image using PMD Camera

Adam Roderick J21-Aug-09 1:08

Adam Roderick J

21-Aug-09 1:08

For the first step u will get help from the below article
Capture Live Video from various Video Devices.[^]

For sending data u can refer the below article

C++ Winsock Client To Server File Transfer - Made Easy[^]
Smile | :)

Величие не Бога может быть недооценена.

Getting file pointer (*FILE)

Azghar Hussain20-Aug-09 23:51

Azghar Hussain

20-Aug-09 23:51

Hi,

Is there any SDK or API which gives me the FILE Pointer to the file which is zipped inside another file. Basically I have couple of files which are winzipped and password protected. I want to FILE pointer to file which is inside the zip file. We have similar kind of functionality in sharpziplib which gives stream of file which is inside the zip file. sharpziplib is available in C#. Is there any SDK or libarary or API which is available to implement such kind of functionality in C++.

thanks,
Umrahi

If you have faith in the cause and
the means and in God, the hot
Sun will be cool for you.

Re: Getting file pointer (*FILE)

sashoalm21-Aug-09 1:08

sashoalm

21-Aug-09 1:08

I'm not sure about FILE* pointer, but if you want to extract the file see Minizip[^].

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: Getting file pointer (*FILE)

Azghar Hussain21-Aug-09 2:09

Azghar Hussain

21-Aug-09 2:09

thanks for reply...

It seems it is not a managed code or compatible with visual studio 2008... Can you show me any library which is compatible with Visual studio 2008

thanks again

If you have faith in the cause and
the means and in God, the hot
Sun will be cool for you.

RasSetEntryProperties() function not working properly in vista.

birajendu20-Aug-09 23:23

birajendu

20-Aug-09 23:23

Hi ,
I am using this RasSetEntryProperties() function to write entries in phone book.

In Windows Xp machine i got all the properties properly.

But in Vista machine these following etries are not been created.

PhoneNumber=
AreaCode=
CountryCode=1
CountryID=1
UseDialingRules=0
Comment=

Can you please let me know what is the difference in vista in this context?

Thanks in advance...................

Birajendu
SonicWALL
Bangalore
India

URL encoding/decoding function for C++

sashoalm20-Aug-09 22:43

sashoalm

20-Aug-09 22:43

Anyone know a C++ function or library that can be used for percent decoding? I need a function that can take urls of the type "http%3A%2F%2Fwhatever.com" and turn it into "http://whatever.com". I searched on google but couldn't find anything.

I hope there is a standard function in some library (may be boost, I've heard it has nearly everything in it). But since URL decoding is a common problem there has to be some pre-cooked solution for it.

Write now I use code that I've written myself but it only works for 5-6 of the most common symbols, and it's definately not optimized!

std::string s2;
s2.reserve(m_RealUrl.size());
for (size_t i = 0; i < m_RealUrl.size(); i++)
{
    if (m_RealUrl[i] == '%')
    {
        if (!strncmp(&m_RealUrl[i], "%3A", 3))
            s2 += ':';
        else if (!strncmp(&m_RealUrl[i], "%2F", 3))
            s2 += '/';
        else if (!strncmp(&m_RealUrl[i], "%3F", 3))
            s2 += '?';
        else if (!strncmp(&m_RealUrl[i], "%3D", 3))
            s2 += '=';
        else if (!strncmp(&m_RealUrl[i], "%26", 3))
            s2 += '&';
        else if (!strncmp(&m_RealUrl[i], "%25", 3))
            s2 += '%';
        i += 2;
    }
    else
        s2 += m_RealUrl[i];
}

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: URL encoding/decoding function for C++

Code-o-mat20-Aug-09 22:55

Code-o-mat

20-Aug-09 22:55

Try the Wininet[^] api, it has methods to canonize an URL, maybe it has something to do the job the other way too...

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: URL encoding/decoding function for C++

Randor 20-Aug-09 22:55

Randor

20-Aug-09 22:55

Have you tried the shell lightweight utility UrlUnescape Function[^]?

Best Wishes,
-David Delaune

Re: URL encoding/decoding function for C++

sashoalm20-Aug-09 23:39

sashoalm

20-Aug-09 23:39

Thanks, that was just what I needed! Smile | :)

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: URL encoding/decoding function for C++

Hristo-Bojilov20-Aug-09 22:57

Hristo-Bojilov

20-Aug-09 22:57

I suppose that AtlEscapeUrl and AtlUnescapeUrl are the functions you are looking for. Smile | :)

Life is a stage and we are all actors!

Re: URL encoding/decoding function for C++

Rajesh R Subramanian20-Aug-09 22:58

Rajesh R Subramanian

20-Aug-09 22:58

And if you're using MFC, there is AfxParseURLEx[^] function.

It is a crappy thing, but it's life -^ Carlo Pallini

Re: URL encoding/decoding function for C++

sashoalm20-Aug-09 23:27

sashoalm

20-Aug-09 23:27

I wrote this code

std::string url = "http%3A%2F%2Fsomething.com/index.php";
CString server, object, username, password;
DWORD service_type;
INTERNET_PORT internet_port;
AfxParseURLEx(url.c_str(), service_type, server, object, internet_port, username, password, ICU_DECODE);

But after the call to AfxParseURLEx both server and object are "". Is this the correct usage of AfxParseURLEx?

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: URL encoding/decoding function for C++

Rajesh R Subramanian21-Aug-09 0:12

Rajesh R Subramanian

21-Aug-09 0:12

This page[^] has an example for AfxParseURL (not the extended version). Also, see How to Encode/Decode URLs to the UTF8 Format (with %20 and so)[^]

It is a crappy thing, but it's life -^ Carlo Pallini

Re: URL encoding/decoding function for C++

David Crow21-Aug-09 3:18

David Crow

21-Aug-09 3:18

Is it really conceivable that the :// characters would be escaped? I just tried your code snippet with escaped characters in other parts of the URL and it worked fine.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: URL encoding/decoding function for C++

Randor 21-Aug-09 3:59

Randor

21-Aug-09 3:59

DavidCrow wrote:
Is it really conceivable that the :// characters would be escaped?

Right click on this page and select View Source and scroll to the bottom. You may find an escaped URL hiding in there. Escaped URLs are very common in browser ads and malware for evading spam/ad-blocking technologies.

I'm not implying the purpose of the escaped URL on codeproject is for nefarious deeds! Unsure | :~

Best Wishes,
-David Delaune

Re: URL encoding/decoding function for C++

sashoalm21-Aug-09 5:19

sashoalm

21-Aug-09 5:19

Actually the URL that broke my code and made me start searching for a generic unescape function had :// escaped.

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: URL encoding/decoding function for C++

David Crow21-Aug-09 6:00

David Crow

21-Aug-09 6:00

Fair enough. I just had never seen one. Smile | :)

Re: URL encoding/decoding function for C++

Djalma R. dos Santos Filho7-Jan-10 3:29

Djalma R. dos Santos Filho

7-Jan-10 3:29

// I suggest the following:

std::string s2 = m_RealUrl;
std::replace(s2.begin(),s2.end(),'+',' '); // ascii 32 decodding
s2 = decode_percents( s2 );

// I found decode_percents function in Boost 1.41.0 Inspect Tool library

std::string decode_percents(std::string const& url_path)
{
std::string::size_type pos = 0, next;
std::string result;
result.reserve(url_path.length());

while((next = url_path.find('%', pos)) != std::string::npos)
{
result.append(url_path, pos, next - pos);
pos = next;
switch(url_path[pos]) {
case '%': {
if(url_path.length() - next < 3) return "";
char hex[3] = { url_path[next + 1], url_path[next + 2], '\0' };
char* end_ptr;
result += (char) std::strtol(hex, &end_ptr, 16);
if(*end_ptr) return "";
pos = next + 3;
break;
}
}
}

result.append(url_path, pos, url_path.length());
return result;
}

http://www.boost.org/doc/libs/1_41_0/tools/inspect/link_check.cpp[^]

Regards,
Djalma R. Santos Filho

Multiple Child Dialogs

SutterA20-Aug-09 22:23

SutterA

20-Aug-09 22:23

Hi,

I'm back again with another question. I have a dialog which holds a tab control only. For each tab I created a dialog where I set the settings to border: no, style: child and control: on (Perhaps I used other words than the ones in Visual Studio because I use the german version)

So far this works just fine. I can open the different dialogs by selecting the adequate tab. Now I try to make a dialog on one of the tabs (let's call it dialog 1) which contains child dialogs (dialog 2) itself. I did everything like with the other dialogs, but I only see the controls which are directly on dialog 1, the dialog 2 is not there. My supposition is that it is either somehow hidden or behind dialog 1.

Anyone has an idea? Thank you.

Re: Multiple Child Dialogs

KarstenK20-Aug-09 22:56

KarstenK

20-Aug-09 22:56

if d2 is child of d1 it is in d1 and the controls of d1 will overlap d2. hide d1 (or the controls= and bring d2 to top.

If you use MFC you can build a propertysheet.

Press F1 for help or google it.
Greetings from Germany

Re: Multiple Child Dialogs

SutterA20-Aug-09 23:10

SutterA

20-Aug-09 23:10

Hi KarstenK,

in dialog1 I have space reserved where I want to insert dialog2.
Dialog1 only contains two static texts and one GroupBox, I also tried both settings for the visibility but it didn't change anything.

I'm using MFC, but never came across those property sheets. Perhaps I can find the solution there.
Thank you so far.

Re: Multiple Child Dialogs

KarstenK21-Aug-09 0:34

KarstenK

21-Aug-09 0:34

Propertysheets are one of the best features of the MFC and really simple: http://msdn.microsoft.com/de-de/library/d3fkt014(VS.80).aspx

At the end of the site are links to samples. Blush | :O

You make dialog-resource and create a CPropertyPage class with the wizard and call AddPage to a sheet...
Sleepy | :zzz:

If you have WTL -> http://www.codeproject.com/KB/wtl/WTL4MFC8.aspx

Press F1 for help or google it.
Greetings from Germany

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