C / C++ / MFC Discussion Boards

Sam 20062-Mar-06 13:25

Sam 2006

2-Mar-06 13:25

hey,

i need to create a web browser control for my app. i'm using mfc, and don't want to use .net's web browser control (unless i can statically link it).

ive searched the articles and found a few things, but they are all pretty complicated. i don't need to display the page, just connect to a server and store the html code in a string.

is their a simple way to do this?

thanks in advance,
sam kline

Re: web browser control

Mauro Leggieri2-Mar-06 16:14

Mauro Leggieri

2-Mar-06 16:14

If you are using webbrowser control, when load completes you must use IHTMLDocument and related interfaces to retrieve the code but in your case, my recomendation is to use sockets to connect to the server, send it the minimal http request header and parse the response.

I believe it can be less complicated and avoid webcontrol dependency.

Best regards,
Mauro.

Re: web browser control

Ryan Binns2-Mar-06 16:52

Ryan Binns

2-Mar-06 16:52

Have a look at the MFC internet class - CInternetFile etc. They will let you download a web page as a CFile object that you can just call Read() on to get the page data.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: web browser control

Michael Dunn2-Mar-06 20:29

Michael Dunn

2-Mar-06 20:29

You can also use URLDownloadToFile() to download a file from any URL.
Using Internet Explorer to download files for you[^]

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | NEW!! PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Re: web browser control

Sam 20063-Mar-06 12:05

Sam 2006

3-Mar-06 12:05

thats what i used.
thanks & nice article.

Sam Kline

Add a CR

samkook2-Mar-06 12:55

samkook

2-Mar-06 12:55

How can I add a carriage return at the end of a CString?

Re: Add a CR

Stephen Hewitt2-Mar-06 13:09

Stephen Hewitt

2-Mar-06 13:09

CString s; // Blah blah blah...
s += _T("\n");
// Or sometimes it is necessary to do it as follows:
s += _T("\r\n");

Steve

Re: Add a CR

samkook2-Mar-06 14:02

samkook

2-Mar-06 14:02

Thanks a lot. I don't know why I didn't think of that.

Re: Add a CR

ThatsAlok2-Mar-06 17:18

ThatsAlok

2-Mar-06 17:18

isn't \n\r work or \r\n ..! OMG | :OMG:

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: Add a CR

Michael Dunn2-Mar-06 20:31

Michael Dunn

2-Mar-06 20:31

It depends on what the string will be written to. If it's a text file, use \r\n uness you're going to be using the C I/O functions, in which case use \n and let the CRT change it to \r\n on its own. For multi-line text boxes, use \r\n.
\n\r is never right. Wink | ;)

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | NEW!! PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Re: Add a CR

ThatsAlok2-Mar-06 20:54

ThatsAlok

2-Mar-06 20:54

Michael Dunn wrote:
\n\r is never right.

Right

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

New to VC++

Chilakaluri2-Mar-06 12:48

Chilakaluri

2-Mar-06 12:48

Can Any one please tell me how can I compile and see the result(on the screen) of the following program using VisualStudio?

include<stdio.h>
main()
{
int i=3;
int*j;
j = &i;

printf("The value of i=%d",*j);

}

Re: New to VC++

Brett Peirce2-Mar-06 13:56

Brett Peirce

2-Mar-06 13:56

Though I personally use streams (cout) for my programs at school, and I am not familiar with the printf() function, If you are using VC++.Net, I think you actually have to put a system("pause"); at the end of your program or it will not remain open long enough for you to see anything... other than that, you'll have to wait for someone else to answer. I hope it helps!

sincerely, Brett Peirce - PolerBear
To err is human; To forgive: divine.

Re: New to VC++

Xing Chen2-Mar-06 14:49

Xing Chen

2-Mar-06 14:49

use getch() function at last,declare in conio.h Smile | :)

Template function problem

Eikthrynir2-Mar-06 11:56

Eikthrynir

2-Mar-06 11:56

Hi! I have a template function problem.
This is what I tried to do:

First, I created a .lib file called writeValue.lib, using this source code:

/* ********************************* */<br />
#include <iostream><br />
<br />
template <class T><br />
void __cdecl writeValue( T value )<br />
{<br />
  std::cout << value << flush;<br />
}<br />
/* ********************************* */

Then, I tried to build a Win32 Console Project, in which I put a single file called main.cpp, containing the following lines:

/* ********************************* */<br />
template <class T><br />
extern void __cdecl writeValue( T value );<br />
<br />
// Link writeValue.lib created above<br />
#pragma comment( lib, "writeValue" )<br />
<br />
int main( void )<br />
{<br />
  writeValue <int> ( 10 );<br />
<br />
  return 0;<br />
}<br />
/* ********************************* */

It compiles, so I get a main.obj, it links writeValue.lib, but I get a link error when I try to use the writeValue( ) function with an integer parameter:

error LNK2019: unresolved external symbol "void __cdecl writeValue<int>(int)" (??$writeValue@H@@YAXH@Z) referenced in function _main

- even though the writeValue( ) function is defined (as a template) in the writeValue.lib file.

All was done in Microsoft Visual Studio .NET Professional 2003.
Can anyone help me with this, please? Thank you!

Re: Template function problem

George L. Jackson2-Mar-06 13:21

George L. Jackson

2-Mar-06 13:21

Template function and classes are created during compile time and instantiation. Thus, your "writeValue" function will not have a definition in your "dll".

You will need to put your template function in a header file. Or, read the following article which involves forcing instantiation: http://www.codeproject.com/cpp/MemberTemplateDLL.asp[^]

Also, this looks promising: http://msdn2.microsoft.com/en-us/library/by56e477(en-US,VS.80).aspx[^]

-- modified at 20:23 Thursday 2nd March, 2006

Handling a double click

Jader892-Mar-06 9:56

Jader89

2-Mar-06 9:56

I want to invoke a certain method when a edit control is double clicked, but i cant seem to find any info on the event handling that i need to do. Any help would be appriacated, thank you.

"There are 10 types of people, those who understand binary, and those who don't."
- Somebody, not me.

Re: Handling a double click

David Crow2-Mar-06 10:06

David Crow

2-Mar-06 10:06

Is this MFC or not?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: Handling a double click

Jader892-Mar-06 10:09

Jader89

2-Mar-06 10:09

Yea, MFC. Using .NET '02

"There are 10 types of people, those who understand binary, and those who don't."
- Somebody, not me.

Re: Handling a double click

David Crow2-Mar-06 10:33

David Crow

2-Mar-06 10:33

I would instruct you to use ClassWizard, but that does not exist beyond VS v6. I think it has been "replaced" with a properties-type of thing. In any case, You'll need a ON_BN_CLICKED() entry in the dialog's BEGIN_MESSAGE_MAP() method. Don't forget to implement the handler function.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: Handling a double click

Jader892-Mar-06 10:47

Jader89

2-Mar-06 10:47

I tried that. It complies fine, but when its running i tried it out, and it never reachs my method that i attached to it through the ON_BN_CLICKED() method... As of now im just grabbing the cursor on any double click, and having to compare to where my edit controls are, but this seems way to complex for something that i feel should an easier way..

"There are 10 types of people, those who understand binary, and those who don't."
- Somebody, not me.

Re: Handling a double click

David Crow2-Mar-06 10:58

David Crow

2-Mar-06 10:58

See the example here.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

loop processing

ronwurster2-Mar-06 9:51

ronwurster

2-Mar-06 9:51

I have a dialog with several controls in it for several miscellaneous functions. Among them, I created a pushbutton control (function) which, when entered, loops forever processing the following:
opens a file, processes file data, closes the file, sleeps to
allow file access and repeats within the loop.

Once I select the pushbutton to do this, it locks me out from any of the other controls. How can I suspend (etc.) the loop to allow me to tell if another control has been selected and, if so, leave this loop to process the selected control.

Thanks, Ron

Re: loop processing

David Crow2-Mar-06 9:53

David Crow

2-Mar-06 9:53

ronwurster wrote:
opens a file, processes file data, closes the file,

You need to put this code in a worker thread.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: loop processing

ronwurster3-Mar-06 4:33

ronwurster

3-Mar-06 4:33

Thanks David.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.