C / C++ / MFC Discussion Boards

Re: acessing source data on a URL

N a v a n e e t h1-Dec-09 17:13

N a v a n e e t h

1-Dec-09 17:13

solinb wrote:
I need a way to access data at a URL and do some simple manipulations

You need to find a library that can request to a URL and return the response. POCO[^] has got a network library which can be used here.

Smile | :)

Best wishes,
Navaneeth

Re: acessing source data on a URL

Garth J Lancaster1-Dec-09 17:55

Garth J Lancaster

1-Dec-09 17:55

why dont you look at 'curl' http://curl.haxx.se/[^]

- comes in a command line, windows version - you can 'get' pages/data etc, if you needed more I'm sure you could wrap scripting around it to for example dump pages/files to disk and parse them - or use the curl-library and drive it from a program

'g'

Re: acessing source data on a URL

David Crow2-Dec-09 3:22

David Crow

2-Dec-09 3:22

solinb wrote:
I need a way to access data at a URL...

Can you elaborate? Are you wanting to download a file given its URL?

"One man's wage rise is another man's price increase." - Harold Wilson

"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: acessing source data on a URL

solinb2-Dec-09 6:18

solinb

2-Dec-09 6:18

The site I need to access has a table of proteins featuring links to their sequence data. I need to be able to go from protein to protein, into the pages with their sequence data, get the data, and move to the next to one. I need to save all of this in a way that keeps the two in order.

The later end of that I can handle, even with my very basic skill set, I am used to manipulating data from text files. I'm just trying to figure out how to access the data.

Thanks to every for your help above, but I really do need help getting properly oriented. Every resource I find explains how to do this in terms of other things I don't understand. I'd really like to learn, but I need to know where to start.

again, i'm not looking for anything particularly robust, it just has to work.

Re: acessing source data on a URL

David Crow2-Dec-09 7:28

David Crow

2-Dec-09 7:28

solinb wrote:
The site I need to access has a table of proteins featuring links to their sequence data. I need to be able to go from protein to protein, into the pages with their sequence data, get the data, and move to the next to one.

But are you wanting to download a file given its URL?

Re: acessing source data on a URL

solinb3-Dec-09 9:04

solinb

3-Dec-09 9:04

http://www.ncbi.nlm.nih.gov/sites/entrez?Db=genome&Cmd=Retrieve&dopt=Protein+Table&list_uids=23523
Thats the page which lists all the genes I'm interested in.

from that I need to write a program that goes from each entry linked under the 'accession' column. For instance, for this homoserine kinase:
http://www.ncbi.nlm.nih.gov/protein/218698422

from that, I need the sequence of text under 'ORIGIN'

after that, I need it to loop through and check out all the others. I haven't worked out yet if i want it to kick all sequences it picks up indexed somewhere, or just perform the analysis I need, store that, and move on to the next one. I could write either, but it's a moot point if I can't get the data initially.

It doesn't seem like it should be to hard to do, but I need a push in the right direction.

Re: acessing source data on a URL

David Crow3-Dec-09 9:52

David Crow

3-Dec-09 9:52

Do you have direct access to the genome database? If not, the only solution I can think of would be to parse the obj_table23523 table that is being returned in the HTML.

Re: acessing source data on a URL

solinb3-Dec-09 9:59

solinb

3-Dec-09 9:59

I don't know how to get said HTML returned. Which is where the hang up is.

Re: acessing source data on a URL

solinb11-Dec-09 10:11

solinb

11-Dec-09 10:11

for the record, i'm now going with python because i was able to write a program to get the data i needed in about 3 lines.

How do you relabel "Toolbar Options" from a CMFCOutlookBar?

Dale Haessel1-Dec-09 9:02

Dale Haessel

1-Dec-09 9:02

Using the OutlookDemo in Feature Pack samples.

http://img217.imageshack.us/i/toolbaroptions.jpg/

In Outlook 2007, the item says "Configure Buttons" so management wants the outlook bar to say the same thing.

Parameter to hide textbox/label at runtime through SendMessage()

Supriya Tonape1-Dec-09 4:47

Supriya Tonape

1-Dec-09 4:47

Hello,
I want to hide textbox/label at run time, Could you please let me know what's the 2nd parameter to pass to below WIN API function,

SendMessage(hComponentName, ?, 0, 0);

Best Regards,
Supriya

Re: Parameter to hide textbox/label at runtime through SendMessage()

David Crow1-Dec-09 5:01

David Crow

1-Dec-09 5:01

How about WM_SHOWWINDOW?

Re: Parameter to hide textbox/label at runtime through SendMessage()

Code-o-mat1-Dec-09 8:19

Code-o-mat

1-Dec-09 8:19

WM_SHOWWINDOW[^] only notifies the given window that it is about to be hidden or shown, it doesn't actually hide or show the window.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: Parameter to hide textbox/label at runtime through SendMessage()

David Crow1-Dec-09 8:25

David Crow

1-Dec-09 8:25

I realized that right after I responded but got distracted with something else before fixing it. Thanks.

Re: Parameter to hide textbox/label at runtime through SendMessage() [modified]

Code-o-mat1-Dec-09 8:22

Code-o-mat

1-Dec-09 8:22

I don't think you can do that with SendMessage (except for maybe doing it indirectly if you show and hide the given window in the message handler), you should use ShowWIndow[^] for this.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

modified on Tuesday, December 1, 2009 2:45 PM

Re: Parameter to hide textbox/label at runtime through SendMessage()

Supriya Tonape1-Dec-09 20:13

Supriya Tonape

1-Dec-09 20:13

Thank you very much for suggestion!
I tried below and it worked for me Smile | :)

hComponentName = GetDlgItem(hDlg,IDC_STATIC3);
SendMessage(hComponentName, SW_HIDE, 1, 0);

Thanks again.

Best Regards,
Supriya.

Re: Parameter to hide textbox/label at runtime through SendMessage()

Code-o-mat1-Dec-09 20:30

Code-o-mat

1-Dec-09 20:30

You can send SW_HIDE to a window to make it hidden? That's completely new to me, i learn something every day, thanks.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: Parameter to hide textbox/label at runtime through SendMessage()

Richard MacCutchan1-Dec-09 21:37

Richard MacCutchan

1-Dec-09 21:37

Code-o-mat wrote:
You can send SW_HIDE to a window to make it hidden?

Only if that window processes the WM messages and responds accordingly. Most standard window types in a dialog will do this.

Re: Parameter to hide textbox/label at runtime through SendMessage()

Supriya Tonape2-Dec-09 22:43

Supriya Tonape

2-Dec-09 22:43

Best Regards,
Supriya Tonape

Programmatically deleting old files with a C program

ChemmieBro1-Dec-09 3:46

ChemmieBro

1-Dec-09 3:46

I have an ancient program that creates logs named using the time when they are created.

I need to delete the oldest files in the folder, only keeping the most recent 20, during runtime.

Is there any way to do this in C?

I can use Remove(filename), but then I have to go through each filename and compare dates. Seems like a hassle. Is there any function that returns the date of a file for comparison?

Thanks.

Re: Programmatically deleting old files with a C program

David Crow1-Dec-09 3:51

David Crow

1-Dec-09 3:51

ChemmieBro wrote:
Is there any way to do this in C?

Yes.

ChemmieBro wrote:
Is there any function that returns the date of a file for comparison?

How about GetFileTime()?

Re: Programmatically deleting old files with a C program

loyal ginger1-Dec-09 6:28

loyal ginger

1-Dec-09 6:28

Your program has to check all the log files to find which 20 files are the latest. Then the program can delete all the old ones.

The program can get file times using CFileFind::GetLastWriteTime() (if you are using MFC). You said the filenames contain the time also. In that case you can also parse the filenames to get the times.

You can load the file times (together with the pathnames) into an array and sort them to find out the files that should be deleted. Sorting can be done easily by STL utilities.

Seems to be a hassle, but it's done by your program. The only hassle to you will be to write this program, just once. By using MFC and STL to implement this, it's not a big deal at all.

Good luck!

Re: Programmatically deleting old files with a C program

ChemmieBro1-Dec-09 6:55

ChemmieBro

1-Dec-09 6:55

That's about what I thought. (parsing the names)
I'm stuck with standard C with no MFC support. This is an old, and very basic program, that I'm modifying. Looks like I'll just have to sort and use the Remove("filename.txt") function. Even with getting the file times, I'll still have to do some comparing/sorting.

I'm actually thinking of just changing the file naming to adding a number to the end of the file. Since there are only 20 or 30 files (whatever I choose), I'll just increment those each time and delete when there gets to be 31 in the folder... it is crude, but easy.

Thanks for the input. Thank goodness for programming advances since this was written...

Re: Programmatically deleting old files with a C program

Patcher321-Dec-09 17:53

Patcher32

1-Dec-09 17:53

Since your program creates log files names based on date and time, you can parse file names for the time when they were created. That would be better method, than finding the file's last write time.

Re: Programmatically deleting old files with a C program

vasu_sri2-Dec-09 0:33

vasu_sri

2-Dec-09 0:33

just create a file with number like file1.txt,file2.txt ..... file20.txt.
after that, check like this,

for (int i=0;i<20;i++)
{
    CString str;
    str.Format(_T("file%d"),i);
    if(!PathFileExists(str))
        break;
            DeleteFile(str);

}

if file doesn't exists then break the loop.

Regards,
Srinivas

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