Re: create a reference vector of class objects - C / C++ / MFC Discussion Boards

Chandrasekharan P14-Jul-09 1:07

14-Jul-09 1:07

I have an application developed in mfc. Its a dialog based application. there is structure containing some members in it. I need to display the structure members in a listbox. how can i achive this?

Re: Structure members in a listbox [modified]

Adam Roderick J14-Jul-09 1:22

Adam Roderick J

14-Jul-09 1:22

Do you want to pass your structure directly to list box function and in according that list box is added with new item, is it your need?

if so then derive a class from CListBox and overload a function AddString()
say

CListBoxEx and your structure is
struct EXData

overload a function

int AddString( const EXData& MyStruct ); Smile | :)

modified on Tuesday, July 14, 2009 7:28 AM

Re: Structure members in a listbox

Rajesh R Subramanian14-Jul-09 1:23

Rajesh R Subramanian

14-Jul-09 1:23

See CListBox::AddString()[^].

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

Re: Structure members in a listbox

Chandrasekharan P14-Jul-09 1:29

Chandrasekharan P

14-Jul-09 1:29

Thanks Guys. I have solved the problem.

Re: Structure members in a listbox

Muhammad Mazhar14-Jul-09 1:40

Muhammad Mazhar

14-Jul-09 1:40

read each item from structure one by one and append it to some string finally add string to list box.

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create a reference vector of class objects

002comp14-Jul-09 0:58

002comp

14-Jul-09 0:58

Hello

I want to create a refernce vector of class object in vs 2008.I m doing in vs2002 like

vector<piece> &m1 = garment->get_m1();

Piece is my class.

but when i m doing same in vs 2008,It is creating problem during m1.push_back().

Actually,as i think it is not getting Initialized properly,
So,Is any different way to use refernce vectors of class objects?

Re: create a reference vector of class objects

CPallini14-Jul-09 2:18

CPallini

14-Jul-09 2:18

I suppose you should elaborate a bit (and show more code).

BTW could you please use the code block button when posting code snippets?
Smile | :)

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Re: create a reference vector of class objects

Graham Shanks14-Jul-09 2:22

Graham Shanks

14-Jul-09 2:22

You need to clarify your question a bit.

First, please use the code block tags around your example code. Standard HTML does not render code properly

Secondly, you need to show the implementation (or a cut down version of it) of the get_m1 method

Thirdly, what is the problem that you are getting during m1.push_back?

I'm not sure what you mean by a "reference vector of class objects".

Do you mean a vector of references to class objects? If you do then this will not compile since it is not possible to have a vector (or any other container) of references. The type for std::vector must be assignable[^], and references are not assignable. Use a vector of pointers to objects instead.

Or do you mean a reference to a vector of class objects? This is at least legal and should work, e.g.

class Piece
{
};

class Garment
{
public:
  std::vector<Piece>& get_m1()
  {
    return pieces;
  }

private:
  std::vector<Piece> pieces;
};

static void foo()
{
  Garment garment;
  std::vector<Piece>& m1 = garment.get_m1();
  Piece piece1;
  m1.push_back(piece1);
}

Graham

Librarians rule, Ook!

ShellExecute does not work with utf-8 encoded files

venera_soft14-Jul-09 0:26

venera_soft

14-Jul-09 0:26

Hi All.
I have a problem with opening an html file. The file is UTF-8 encoded.
My code is

ShellExecute(NULL, L"open", L"C:/PROGRAM FILES/MOZILLA FIREFOX/FIREFOX.EXE", L"file:///C:/DOCUME~1/MACADA~1/LOCALS~1/Temp/index.htm", NULL, SW_SHOWNORMAL);

it returns a value greater than 32 (success). But it opens a blank page. Sigh | :sigh:

When i look the page sources i can see that there is "Unicode conversion problem" is written in body tag.
If i try to open another file (ANSI encoded) it works properly.
Anyone have an idea?

Thanks,
Venera

Re: ShellExecute does not work with utf-8 encoded files

Michael Schubert14-Jul-09 0:55

Michael Schubert

14-Jul-09 0:55

What are your character encoding settings in FF? Have you tried IE with that file?

Re: ShellExecute does not work with utf-8 encoded files

venera_soft14-Jul-09 1:05

venera_soft

14-Jul-09 1:05

FF character encoding is set to Western but even setting to Unicode (UTF-8) does not help.
The same behavior is in IE. Frown | :(

Re: ShellExecute does not work with utf-8 encoded files

Michael Schubert14-Jul-09 1:18

Michael Schubert

14-Jul-09 1:18

OK, what happens when you open the file directly in FF or IE?

Re: ShellExecute does not work with utf-8 encoded files

venera_soft14-Jul-09 1:20

venera_soft

14-Jul-09 1:20

It opens properly.

Re: ShellExecute does not work with utf-8 encoded files

Michael Schubert14-Jul-09 1:33

Michael Schubert

14-Jul-09 1:33

Have you tried without the "file:///"?

Re: ShellExecute does not work with utf-8 encoded files

venera_soft14-Jul-09 1:37

venera_soft

14-Jul-09 1:37

In this case it pops up an alert message "Firefox doesn't know how to open this address, because the protocol(c) isn't associated with any program".

Re: ShellExecute does not work with utf-8 encoded files

Michael Schubert14-Jul-09 1:56

Michael Schubert

14-Jul-09 1:56

I tried your code with the same syntax on several UTF-8 encoded files and it works fine for me.

Re: ShellExecute does not work with utf-8 encoded files

venera_soft14-Jul-09 2:23

venera_soft

14-Jul-09 2:23

Thanks.
I found a strange behaviour. When i put this file in D:, so the code is
ShellExecute(NULL, L"open", browser.c_str(), L"file:///D:/index.htm", NULL, SW_SHOWNORMAL);

it works. But i want to mention that when i try to open an ANSI encoded file from the same directory (C:/DOCUME~1/MACADA~1/LOCALS~1/Temp/) it also works fine. It is weird... Frown | :(

Re: ShellExecute does not work with utf-8 encoded files

Joe Woodbury14-Jul-09 6:42

Joe Woodbury

14-Jul-09 6:42

It appears that ShellExecute is working just fine. It's Firefox that is having a problem with the file.

Re: ShellExecute does not work with utf-8 encoded files

venera_soft14-Jul-09 11:05

venera_soft

14-Jul-09 11:05

I don't think it is FF problem because the problem occurs also in IE Frown | :(

Re: ShellExecute does not work with utf-8 encoded files

Joe Woodbury14-Jul-09 11:05

Joe Woodbury

14-Jul-09 11:05

Find, but it's still not a problem with ShellExecute.

Re: ShellExecute does not work with utf-8 encoded files

David Crow14-Jul-09 8:54

David Crow

14-Jul-09 8:54

venera_soft wrote:
ShellExecute(NULL, L"open", L"C:/PROGRAM FILES/MOZILLA FIREFOX/FIREFOX.EXE", L"file:///C:/DOCUME~1/MACADA~1/LOCALS~1/Temp/index.htm", NULL, SW_SHOWNORMAL);

it returns a value greater than 32 (success). But it opens a blank page.

Can you execute this command outside of code (i.e., the Run box)?

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Re: ShellExecute does not work with utf-8 encoded files

venera_soft15-Jul-09 22:42

venera_soft

15-Jul-09 22:42

How can i do it?

Re: ShellExecute does not work with utf-8 encoded files

David Crow16-Jul-09 2:30

David Crow

16-Jul-09 2:30

By typing C:/PROGRAM FILES/MOZILLA FIREFOX/FIREFOX.EXE C:/DOCUME~1/MACADA~1/LOCALS~1/Temp/index.htm in the Run box.

Re: ShellExecute does not work with utf-8 encoded files

venera_soft16-Jul-09 23:12

venera_soft

16-Jul-09 23:12

No, it is impossible.
Thanks for your help. I found that the file was corrupting during the program run. And the reason was not the ShellExecute function.

Re: ShellExecute does not work with utf-8 encoded files

David Crow17-Jul-09 2:08

David Crow

17-Jul-09 2:08

venera_soft wrote:
No, it is impossible.

That should tell you it's not a code issue.

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