C / C++ / MFC

Re: Calling a URL from an MFC - MDI application

11-Nov-15 21:17

The WebBrowser control is an ActiveX component based on Microsoft libraries. It is independent of whatever browser you actually use.

David Crow12-Nov-15 2:26

12-Nov-15 2:26

Member 12108486 wrote:
As per my knowledge, this need IE browser right?

CHtmlView doesn't need a browser, it is the browser.

VS 2010 C++ Debug

Harry_D11-Nov-15 5:02

Harry_D

11-Nov-15 5:02

I can't open the OpenSCManager Function in C++ & Debug.
The error-code is always 5.
Confused | :confused:

It works, when i don't use Debug with Admin-Rights only.

With VS 2008 it works.

What can i do ? Confused | :confused:

Re: VS 2010 C++ Debug

Richard Andrew x6411-Nov-15 6:27

Richard Andrew x64

11-Nov-15 6:27

The code that attempts to use this function must have admin rights.

The difficult we do right away...
...the impossible takes slightly longer.

memory allocation error

Member 1208345310-Nov-15 20:34

Member 12083453

10-Nov-15 20:34

the code shows std::bad_alloc error dont know what to do about it when remove the push_back it dissapears. please help on what to do. this happens only when I am entering a huge string s else it runs perfectly fine. is there another efficient way to find all the possible substring, arrange them lexicographicaly and then concatinate them back into one string????pls help thnx in advance

#include <cmath>
#include <set>
#include <cstdio>
#include <vector>
#include <iostream>
#include<string>
#include <algorithm>

using namespace std;

bool sortByString(string &t1, string &t2)
{
return t1 < t2;
}

int main() {

string s,sub,i,c,q;

int T;
cin>>T;

while(T--){

cin >> s;

int length = s.length();

cin>>q;
vector<string> ss;

for (c = 0; c < length; c++)
{
for (i =length-c;i>=1; i--)
{
ss.push_back(s.substr(c,i));
}
}

s="";

set<string> se(ss.begin(),ss.end());
ss.assign(se.begin(),se.end());

vector<string>::iterator p;

for( p=ss.begin();p!=ss.end();++p)
s.append(*p);

cout<<s[q-1]<<endl;
}

return 0;
}

CPallini10-Nov-15 21:54

CPallini

10-Nov-15 21:54

I wonder how your code could possibly compile (in fact, it doesn't on my system, using g++): you are using the variable c, declared std::string where a int is expected.

Member 1208345311-Nov-15 0:28

Member 12083453

11-Nov-15 0:28

sry c and i are integer types. I was making it look proper. in the begining they were all in different places

CPallini11-Nov-15 0:30

CPallini

11-Nov-15 0:30

If you want proper help then you have to post the original code.

David Crow11-Nov-15 2:43

11-Nov-15 2:43

q is defined as a string, yet you are using it as a subscript in the following:

cout << s[q-1] << endl;

Please clean up this code if you are really expecting help from us.

Standalone Windows Application using Visual C++ and SQL DB is possible?

Stefan_Lang13-Nov-15 4:23

Stefan_Lang

13-Nov-15 4:23

1. Always post the code that you actually use and that shows the described (problematic) behaviour
2. Cleaning up your code can occasionally help, but if you do so, then (a) make sure the clean code still compiles (and runs) to the extent the original code did, and (b) make sure the code still shows the same issue(s)! There really is no point discussing code that doesn't show the behaviour you are describing.
3. Learn to use a debugger, step through your code, and examine the current value of your local variables. Since you already know where you're crashing, it's a good starting point to set a break point before the call to push_back(), and investigate the state of your variables then.

Bonus tip: remove that line using namespace std; It is a crutch and will make it more difficult to spot issues in your code. You'll need to add the prefix std:: in many places, so that requires additional typing, but it really isn't that hard, and it adds to the readability of your code as well as reducing the likelyhood that you're mixing up local and library symbols! The extra effort of always typing std:: pays off very quickly!

If you don't believe me, the warnings are all over the place right in the C++ reference. See for example http://en.cppreference.com/w/cpp/language/namespace#Using-directives[^]:

cppreference.com wrote:
Using-directive does not add any names to the declarative region in which it appears (unlike the using-declaration), and thus does not prevent identical names from being declared.

and

cppreference.com wrote:
The using-directive using namespace std; at any namespace scope introduces every name from the namespace std into the global namespace (since the global namespace is the nearest namespace that contains both std and any user-declared namespace), which may lead to undesirable name collisions. This, and other using directives are generally considered bad practice at file scope of a header file.

Emphasis mine.

GOTOs are a bit like wire coat hangers: they tend to breed in the darkness, such that where there once were few, eventually there are many, and the program's architecture collapses beneath them. (Fran Poretto)

Member 1212982010-Nov-15 11:36

Member 12129820

10-Nov-15 11:36

Nice to meet you guys,

It's been a long time since I developed a program.
Now I need to build a simple register program that needs to be a standalone exe running on Windows 7 and above.
Is this possible? if yes where do I start?
I want to use (and learn) Visual C++ in the process.

My best regards,

Rodolfo

Re: Standalone Windows Application using Visual C++ and SQL DB is possible?

Garth J Lancaster10-Nov-15 12:14

Garth J Lancaster

10-Nov-15 12:14

that really depends on what you mean by 'standalone' - I'll assume unless otherwise corrected you mean as in 'not connected to a remote database ie on another machine in a network' .. in which case, yes, very possible - there are versions of MSSQL that are light enough, there's SQLite and plenty of other databases you can deploy with your application for a 'standalone' install - the decider between databases is/are the usual questions concerning databases

how ? make google your friend - read voraciously - trawl CP for example projects - find an example that you 'grok' and use it as a model for your own case - the only way to learn is to do.

When you have specific issues, there are forums here you can post technical issues on

Re: Standalone Windows Application using Visual C++ and SQL DB is possible?

David Crow10-Nov-15 14:40

Re: Standalone Windows Application using Visual C++ and SQL DB is possible?

10-Nov-15 14:40

Garth J Lancaster wrote:
the only way to learn is to do.

Agreed!

David Crow10-Nov-15 14:41

Re: Standalone Windows Application using Visual C++ and SQL DB is possible?

10-Nov-15 14:41

Member 12129820 wrote:
Now I need to build a simple register program...

Richard MacCutchan10-Nov-15 23:02

Re: Standalone Windows Application using Visual C++ and SQL DB is possible?

10-Nov-15 23:02

Some good starting points: https://www.google.com/search?q=learn%20visual%20c%2B%2B[^].

Member 1212982016-Nov-15 11:02

Member 12129820

16-Nov-15 11:02

Thanks guys for the help.

converting sound to text software from c++

Member 121226567-Nov-15 16:47

Member 12122656

7-Nov-15 16:47

Would it be possible to code the sound to text software from c++? what should we use for that?

Re: converting sound to text software from c++

Richard MacCutchan7-Nov-15 21:13

Kinect V2 (Converting code written for Xtion pro live to kinect v2 compatible form)

7-Nov-15 21:13

See https://msdn.microsoft.com/en-us/library/ee125077(v=vs.85).aspx[^].

ArsalanSaeed7-Nov-15 12:45

ArsalanSaeed

7-Nov-15 12:45

Hey everyone i am working on an old code which was written for 'Xtion pro live RGBD camera' my task is to make it compatible for kinect v2, i.e. it must take the input form kinect v2 instead of the old camera. Can somebody help me in the regard that which part of the code to be changed and any idea how to do that?(Working with c++ in visual studio 2013 (The old code includes Opencv, OpenNI and NiTE linked to it)).

(As far as i understood i have to change only the part of code where image acquisition is happening but its too complicated for me as i am new with it)

modified 7-Nov-15 19:07pm.

Kinect V2 (Angle detection between 2 joints)

ArsalanSaeed7-Nov-15 12:39

ArsalanSaeed

7-Nov-15 12:39

Hey everyone i am working on a code where i have to detect angles between the 3 joints i.e. Hip,Knee and ankle, would be grateful if someone here can help me out.(I am working with c++ in Visual studio 2013(The old code includes Opencv, OpenNI and NiTE in it)).

modified 7-Nov-15 18:49pm.

MFC CListCtrl how to Display SubItem text with tabulator ?

Member 85340357-Nov-15 3:43

Member 8534035

7-Nov-15 3:43

Hi all,
I am inserting text to CListCtrl Items with function
SetItemText(). The text contains '\t'. I would need to display the text of the subitems with expanded tabulators.
Is there a way? I cannot find any hints about this issue.

Many Thanks

modified 8-Nov-15 15:31pm.

Re: MFC CListCtrl how to Display SubItem text with tabulator ?

Richard MacCutchan7-Nov-15 5:04