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My program needs to execute a function when an the internet become available (ie. Dial-up connection established ...) How do I get this event?
Msn messenger automatically logs in when the internet becomes available, but I haven't been able to figure out how it catches the event.
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Use a 30 second Timer to call InternetGetConnectedState.
Jason Henderson My articles
"The best argument against democracy is a five-minute conversation with the average voter." - Winston Churchill
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I have made several attempts to retreive data from the registry and it has not worked. I have been using code from http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnppc2k/html/ppc_stry.asp and it hasn't been working for me. Could anyone tell me what is wrong with their code, particularly the LoadPreferences() function they posted. I would really appreciate any help.
-- Steve
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Okay here is a down and dirty way to read a registry setting. This has worked great for me for years.
<br />
HKEY hKey;<br />
char szProductType[80];<br />
DWORD dwBufLen;<br />
int i;<br />
<br />
<br />
RegOpenKeyEx( HKEY_LOCAL_MACHINE,<br />
"SOFTWARE\\SomeRegKey\\SomeSubRegKey",<br />
0, KEY_QUERY_VALUE, &hKey );<br />
RegQueryValueEx( hKey, "SomeRegValue", NULL, NULL,<br />
(LPBYTE) szProductType, &dwBufLen);<br />
<br />
i = atoi(szProductType);<br />
RegCloseKey( hKey );<br />
<br />
return i;<br />
I'm basically reading in a value from the registry that was saved as a character and changing it to an int and returnig that int to the calling function.
Hope this helps
Tom Wright
tawright915@yahoo.com
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That code really helped me. I was trying to store a string and load a string from the registry, but the modifications weren't that hard. Thanks! I can finally use the windows registry in a meaningful way for my applications!
-- Steve
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I've created a dialog based app. After it runs through the oninit section I want it to run another function to load up some list boxes. How do I call this other function? Before everything was alway driven by events being fired from a button being pressed or something being selected. So how do I call a functon without an event?
Thanks
Tom Wright
tawright915@yahoo.com
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Tom,
All you need to do is add a member function to the dialog, e.g.
CMyDialogApp::LoadListBox(CListBox* pListBox)
Once you've got your function built, just call it from the OnInitDialog() function.
You can find a more detailed example here: http://www.codeproject.com/dialog/dialogapptute2.asp[^]
Regards,
Paul Lyons, CCPL
Certified Code Project Lurker
What a long, strange trip it's been - Robert Hunter
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Your right. The problem I'm having is that I want the main dialog screen to come up. Then I want to call another function that loads up my list box. If I can't load my list box (getting items from a COBOL database) then I want an error returned back. If I add this call to the function, in my OnInit section to, load the list box, my main dialog window does not come up until after my list box is loaded or has errored out.
Hope this makes sense.
Thanks
Tom Wright
tawright915@yahoo.com
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Mike
I'm a little confused on how I do this. I've read the MSDN lib and it still is not clear. Can you give some more info?
Thanks
Tom Wright
tawright915@yahoo.com
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I have a need to call a Java servlet running in Solaris from Java and VC++ application. Basically i will be doing a http post to a url and sending a UTF-8 encoded GZip compressed XML document. I will get return as XML document from the servlet. I am able to achieve the required funtionality in Java applicaion as follows.
PrintWriter out = null;
connection = (HttpURLConnection) servlet.openConnection();
connection.setDoOutput(true);
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setRequestMethod("POST");
out =
new java.io.PrintWriter(
new OutputStreamWriter(
new GZIPOutputStream(connection.getOutputStream()),
"UTF8"),
true);
out.println(argString);
out.flush();
out.close();
GZIPInputStream in = new GZIPInputStream(connection.getInputStream());
BufferedReader buff = new BufferedReader(new InputStreamReader(in));
output = buff.readLine();
The same functionality i need to implement it in a VC++ application. During my post in the Java servlet it is giving stream not serialized and also i don't know how to do gzip compression for the post operation. I am using the following code,
IXMLHTTPRequestPtr pIXMLHTTPRequest = NULL;
HRESULT hr;
try {
CoInitialize(NULL);
hr=pIXMLHTTPRequest.CreateInstance("Msxml2.XMLHTTP");
SUCCEEDED(hr) ? 0 : throw hr;
hr=pIXMLHTTPRequest->open("POST", "http://url.Servlet", false);
SUCCEEDED(hr) ? 0 : throw hr;
hr=pIXMLHTTPRequest->setRequestHeader("Content-Type", "text/xml");
SUCCEEDED(hr) ? 0 : throw hr;
hr=pIXMLHTTPRequest->send(bstrString);
SUCCEEDED(hr) ? 0 : throw hr;
bstrString=pIXMLHTTPRequest->responseText;
MessageBox(_bstr_t(bstrString), _T("Results"), MB_OK);
if(bstrString)
{
::SysFreeString(bstrString);
bstrString = NULL;
}
} catch (...) {
MessageBox(_T("Exception occurred"), _T("Error"), MB_OK);
if(bstrString)
::SysFreeString(bstrString);
}
If some one can provide some sample to achive this functionality in VC++ will be helpful.
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See my WebResourceProvider[^] article for examples of how to post an HTTP query (and get its response). Specifically, check out the zip code decoder example.
/ravi
Let's put "civil" back in "civilization"
Home | Articles | Freeware | Music
ravib@ravib.com
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Please help me in improveing my Programing Skills.
nhb
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Work your way through the tutorials here and on MSDN. Oh and get some good books.
If that doesn't help, go on a Training Course.
If that doesn't help, maybe this isn't the career for you.
Anna ![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
Homepage | My life in tears
"Be yourself - not what others think you should be"
- Marcia Graesch
"Anna's just a sexy-looking lesbian tart"
- A friend, trying to wind me up. It didn't work.
Trouble with resource IDs? Try the Resource ID Organiser Visual C++ Add-In
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I am currently reading in B.C.S.Hons form Virtual Universty. But i not satisfied from that. I want to do gaem programming but here in Pakistan Multan no institue is offering for that, even in all Pakistan. Also i have visit the Libraries and Markets but I have got no book for it. If u think that books can take me up, then please send me a good prescription ,and if it possible send me the books also.
Khuda Hafiz (Bye)
Nazar Hussain
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Hi,
I'm just converting from Visual Basic to Visual C++ so please forgive me if I come across as a dumb ass  . At the moment I'm getting used to Dialogs using messages etc. My question is this - When you press the little button on the combo-box (causing CBN_DROPDOWN message), do you have to write the code that shows the available selections youreself? I'm used to having this done for me . If you don't, does somebody know why no available selections come up when I press the button on my app?
Thanks in advance.
Zak
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You probably need to size the list. This is done by clicking on the drop-down rrow of the combobox in de resource editor. Then you can change the combobox it's height. Clicking the drop-down arrow again wil resume to normal sizing of the combobox control.
- Jan
We are the all singing, all dancing crap of the world. - Tyler Durden
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Ok thats great thanks. I wouldn't have been able to see my strings. But no strings are still showing  This is my code to add a string to the list -
char TestString[] = TEXT("Test");
SendDlgItemMessage(hWnd, IDC_ADAPTER, CB_ADDSTRING, 0L, (LPARAM)(LPCTSTR)&TestString);
There must be something wrong with this - any ideas.
Thanks again
Zak
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Zak_ wrote:
char TestString[] = TEXT("Test");
SendDlgItemMessage(hWnd, IDC_ADAPTER, CB_ADDSTRING, 0L, (LPARAM)(LPCTSTR)&TestString);
There must be something wrong with this - any ideas.
Try it like this:
SendDlgItemMessage(hWnd, IDC_ADAPTER, CB_ADDSTRING, 0L, (LPARAM)(LPCTSTR)TestString);
Your code adds a pointer to a pointer to a 0-terminated string.
- Jan
We are the all singing, all dancing crap of the world. - Tyler Durden
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Hello,
I don't like wizards, so I decided to things on my own. I set up a project with a formview. I didn't do anything out of the ordinary, but the CWnd::Create() method just won't be called!
Can anyone please tell me where that method is called and what I have to do for that?
thanks
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Give us the details, pal, and we'll be glad to help you. Why don't you post (part of) your code?
HINT: Check the return value of Create() and see if it returns 0 - if it does, something's terribly wrong.
Hope this helps (give the code, though) ,
Vikram.
-----------------------------
My site due for a massive update.
"Good lord you yanks are getting worse than a defensive VB developer at a C++ conference." - Paul Watson in the Lounge, 31 May 2003.
"Do not give redundant error messages again and again." - A classmate of mine, while giving a class talk on error detection in compiler design.
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Hi,
I just don't know where to call Create(), I can't even find it in the wizards generated code!
regards,
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iumentum wrote:
I just don't know where to call Create()
You should do it typically (but not always) from OnCreate() in the class that you derive from CWnd or CFrameWnd.
iumentum wrote:
I can't even find it in the wizards generated code
AFAIK, the wizard has no use for this. You'll have to enter it manually. Don't forget to check the return value.
TIP: Get MSDN, and a good book. I'd recommend "Programming Windows with MFC" by Jeff Prosise.
Vikram.
-----------------------------
My site due for a massive update.
"Good lord you yanks are getting worse than a defensive VB developer at a C++ conference." - Paul Watson in the Lounge, 31 May 2003.
"Do not give redundant error messages again and again." - A classmate of mine, while giving a class talk on error detection in compiler design.
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What is the necessary style the a list box must have to display characters such as this correctly: å, ä, ö, Å, Ä
Or is it just a matter of Windows regional settings?
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