Re: storing strings - C / C++ / MFC Discussion Boards

KarstenK6-Jul-06 1:06

6-Jul-06 1:06

This assert is a hint that there is something frong in your construction code.

Check the replaced CDialog code, maybe there havent you changed all.

Try it with 1 page and step in the code, the error details are important what the MS-Code didnt like.

Greeting from Germany

Re: Assertion error in DoModal()

David Crow6-Jul-06 3:29

David Crow

6-Jul-06 3:29

What line of what file asserts?

"The largest fire starts but with the smallest spark." - David Crow

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storing strings

Desmo166-Jul-06 0:29

Desmo16

6-Jul-06 0:29

Hi all,

I've got a file containing many lines made up by a string followed by numbers like this:
string1 double1 double2 double3
string2 double4 double5 double6
...

I need to store the first column in a string vector,
something like CString[numberofstrings]

How can i do that ?

Thanx,
Desmo16.

Re: storing strings

Justin Tay6-Jul-06 1:07

Justin Tay

6-Jul-06 1:07

You question is too vague. Perhaps the answers to this thread can help?

http://www.codeproject.com/script/comments/forums.asp?msg=1563587&forumid=1647#xx1563587xx[^]

Re: storing strings

Sarath C6-Jul-06 1:08

Sarath C

6-Jul-06 1:08

I'm not going to write the code
do the following. (you should do the required error and out of boundary checking of array

1. Read fist line to a buffer.
2. use strtok function to get the tokens (in this case seperated by space)
3. add to the vector.
4. Do above till the EOF

SaRath.

"Where I am from, there is no plan B. So, take advantage of today becuase tomorrow is not promised. - 50 Cent"

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Re: storing strings

KarstenK6-Jul-06 1:10

KarstenK

6-Jul-06 1:10

The is a CStringArray class in the MFC.

Read The F. Msdn.

Greeting from Germany

Re: storing strings

Stephen Hewitt6-Jul-06 1:37

Stephen Hewitt

6-Jul-06 1:37

Try something like this (not tested):
-------------------------------------

#include <fstream>
#include <vector>
#include <string>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <iterator>

int main(int argc, char *argv[])
{
using namespace std;

// Open the file.
ifstream ifs("C:\\a.txt");
if (!ifs)
{
return 1;
}

// A collection of strings.
typedef vector<string> strings_t;
strings_t StringColl;

// Read in the file line at a time.
string line;
while (getline(ifs, line))
{
// Get the first string in the line.
string FirstString;
istringstream iss(line);
if ( !(iss>>FirstString) )
{
break;
}

// Add it to the collection.
StringColl.push_back(FirstString);
}

// Output the strings in the collection to the console.
copy(StringColl.begin(), StringColl.end(), ostream_iterator<string>(cout, "\n"));

return 0;
}

Steve

Re: storing strings

ThatsAlok6-Jul-06 19:33

ThatsAlok

6-Jul-06 19:33

Desmo16 wrote:
I've got a file containing many lines made up by a string followed by numbers like this:

vector<CString> vecString;
let szTmp of type Char* contain your First line of File...
then this small code will read all the string in the Vector string;

TCHAR *sztoken=strtok(szTmp," ");
        int iCount=0;

        while(sztoken!=NULL)
        {
              vecString.push_back(sztoken);
             sztoken = strtok( NULL, " ");
        }

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

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Re: storing strings

Stephen Hewitt7-Jul-06 0:13

Stephen Hewitt

7-Jul-06 0:13

I'll never understand why people insist on still using old CRT functions such as strcmp and strtok and worst of all printf. Naturally there are exceptions to every rule, but in general the world if better of without these APIs.

Steve

Re: storing strings

ThatsAlok7-Jul-06 0:30

ThatsAlok

7-Jul-06 0:30

Stephen Hewitt wrote:
'll never understand why people insist on still using old CRT functions such as strcmp and strtok

People Don't want to forget there old c/c++ skills that why Smile | :)

, anyway there is also a function called CString ::Tokenize().. which is replacing StrTok api quietly!

"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
Support CRY- Child Relief and You

Re: storing strings

Stephen Hewitt7-Jul-06 3:37

Stephen Hewitt

7-Jul-06 3:37

I don't think people should forget; just enhance.

Steve

two views on single print preview in mfc

RVShetty6-Jul-06 0:16

RVShetty

6-Jul-06 0:16

mine is an SDI application n I have got two views .one is displayed on print preview n i need to print the other view at the end in a new page of the same print preview

RVS

Remote Desktop

Sarath C6-Jul-06 0:03

Sarath C

6-Jul-06 0:03

Hi All,
once I was assigned in a project which is concerned with some streaming to the clients connected. anyway I have implemented a single server - multi client system which can be used for stream video from the server to the number of clients connected. Initially the clients were showing the video very slowly (even if there's only one client connected) in an 100 mbps network. the frames are send in compressed jpg format (around 70%). Now I have came out from that project. now some other person working on that for the performance improvement of server client system. ( when I was there, this feature was in not included in the first phase so I escaped Smile | :)

) that story over.

When I worked with remote deskop of Windows XP, I really get impressed because of the peformance hit I had in my system. anybody can give some inputs to make sure that, the network transfer is optimum and how to improves the streaming across?

SaRath.

"Where I am from, there is no plan B. So, take advantage of today becuase tomorrow is not promised. - 50 Cent"

<blink>My Blog | Understanding State Patte

Re: Remote Desktop

KarstenK6-Jul-06 1:02

KarstenK

6-Jul-06 1:02

I think the color depths is scaled down to 256 colors to minimize data. (->Citrix)

Another possible optimization can be to only transport parts of the client which had changed recently. It leeds to compression schemes as mpeg.

I hope it helps.

Greeting from Germany

Re: Remote Desktop

Sarath C6-Jul-06 1:04

Sarath C

6-Jul-06 1:04

thanks for your valuable suggestion.

SaRath.

"Where I am from, there is no plan B. So, take advantage of today becuase tomorrow is not promised. - 50 Cent"

<blink>My Blog | Understanding State Patte

Sending keys

Smith#6-Jul-06 0:02

Smith#

6-Jul-06 0:02

How do I send keys to application?

I tried like
::SendMessage(hwnd,WM_CHAR,(WPARM)VK_KEY,NULL)
But it's not right I guess.. please help me.

NULL

Re: Sending keys

Justin Tay6-Jul-06 0:05

Justin Tay

6-Jul-06 0:05

SendInput. The window must have focus.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/userinput/keyboardinput/keyboardinputreference/keyboardinputfunctions/sendinput.asp[^]

Re: Sending keys

Smith#6-Jul-06 0:17

Smith#

6-Jul-06 0:17

sendInput doesn't take Hwnd as a param so is it not possible to specify the window? and hence you said "The window must have focus" ?

NULL

Re: Sending keys [modified]

Justin Tay6-Jul-06 0:46

Justin Tay

6-Jul-06 0:46

Yes it's not possible to specify a window as it's simulating keys at the lowest level. You would have to set the window as the foreground window.

Raymond talks about this. You can also read the comments for more good info.

http://blogs.msdn.com/oldnewthing/archive/2005/05/30/423202.aspx[^]

Using PostMessage with WM_KEYDOWN / WM_KEYUP / WM_SYSKEYDOWN / WM_SYSKEYUP (WM_CHAR is generated by the TranslateMessage function) might work with a number of applications though (there's that problem with key states though). You would have to test with all the applications you wish to send input to if you would like to still continue with this route.

-- modified at 6:49 Thursday 6th July, 2006

Re: Sending keys

ThatsAlok6-Jul-06 1:22

ThatsAlok

6-Jul-06 1:22

Meat Loaf wrote:
endInput doesn't take Hwnd as a param so is it not possible to specify the window? and hence you said "The window must have focus" ?

then First SetFocus on window and then send Keyinput to that window. Is setting focus on That window incurred any problem?

"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
Support CRY- Child Relief and You

Re: Sending keys

Smith#6-Jul-06 1:57

Smith#

6-Jul-06 1:57

I haven't tried that yet. There must be no problem in setting the focus. But still I'd try to do it with a sendMessage.

NULL

Re: Sending keys

ThatsAlok6-Jul-06 2:02

ThatsAlok

6-Jul-06 2:02

Meat Loaf wrote:
I haven't tried that yet. There must be no problem in setting the focus. But still I'd try to do it with a sendMessage.

then Simulate KeyPress by sending WM_KEYDOWN and WM_KEYUP message one after another!

"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
Support CRY- Child Re

Re: Sending keys

Muhammad Azam6-Jul-06 1:37

Muhammad Azam

6-Jul-06 1:37

hi,
Assuming m_pWnd is pointer to the window you want to send keys then use,

m_pWnd->SendMessage(WM_KEYDOWN,WPARAM(VK_DELETE),LPARAM(0x01530001));<br />
										m_pWnd->SendMessage(WM_KEYUP,WPARAM(VK_DELETE),LPARAM(0xC1530001));

::SendMessage(hwnd,WM_KEYDOWN,WPARAM(VK_DELETE),LPARAM(0x01530001));<br />
										::SendMessage(hwnd,WM_KEYUP,WPARAM(VK_DELETE),LPARAM(0xC1530001));

if this answers you then, vote for 5 Cool | :cool:

Re: Sending keys

Smith#6-Jul-06 1:58

Smith#

6-Jul-06 1:58

Muhammad Azam wrote:
::SendMessage(hwnd,WM_KEYDOWN,WPARAM(VK_DELETE),LPARAM(0x01530001));
::SendMessage(hwnd,WM_KEYUP,WPARAM(VK_DELETE),LPARAM(0xC1530001));

What's being stored in LPARAM here? Can you explain a bit?

NULL

Re: Sending keys

Smith#6-Jul-06 1:59

Smith#

6-Jul-06 1:59

what If I'd do the try the same with VK_F1 ? should I change the LPARAM accordingly?

NULL

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