C / C++ / MFC Discussion Boards

Re: $(ProgramFiles)

wangningyu7-May-10 22:44

wangningyu

7-May-10 22:44

What will you do?

Re: $(ProgramFiles)

Chesnokov Yuriy7-May-10 23:08

Chesnokov Yuriy

7-May-10 23:08

I meant to add new one e.g. $(MyOwnPath) or change path for available variables e.g. $(ProgramFiles) points to c:\program files to change the path value say to d:\program files

I need to find where these $ values are defined in VS

Чесноков

Re: $(ProgramFiles)

David Crow10-May-10 4:24

David Crow

10-May-10 4:24

Chesnokov Yuriy wrote:
I need to find where these $ values are defined in VS

See if this helps.

"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

"Man who follows car will be exhausted." - Confucius

Re: $(ProgramFiles)

Richard MacCutchan7-May-10 22:48

Richard MacCutchan

7-May-10 22:48

Chesnokov Yuriy wrote:
How to edit, add, delete these values found in Tools->VC++ Directories?

What do you mean? Just click and edit, as you would any other entry.

It's time for a new signature.

Re: $(ProgramFiles)

Chesnokov Yuriy7-May-10 23:08

Chesnokov Yuriy

7-May-10 23:08

Чесноков

Re: $(ProgramFiles)

Richard MacCutchan7-May-10 23:30

Richard MacCutchan

7-May-10 23:30

I'm not sure where these macros are defined but I expect they are setup during install, so are probably somewhere in the registry. As to changing them I have never tried it; if I want extra search items I just add my own paths in the list of directories and adjust the search order as necessary.

It's time for a new signature.

Re: $(ProgramFiles)

Sauce!8-May-10 2:00

Sauce!

8-May-10 2:00

If you only wish to add to these lists then you can create a new environment variable as follows

clicky[^]

CString to const unsigned char *

mesajflaviu7-May-10 21:19

mesajflaviu

7-May-10 21:19

Hy everyone ! I need to do some conversion , from 'CString' to 'const unsigned char *' into function parameter ... can you help me ?
My definition of function is :

std::string CSmtp::base64_encode(const unsigned char *bytes_to_encode, unsigned int in_len)
{
...
...
}

and I want pass an CString parameter :

std::string encoded_login = base64_encode(m_sLogin,m_sLogin.GetLength());

but it won't compile , and the error is :

error C2664: 'base64_encode' : cannot convert parameter 1 from 'class CString' to 'const unsigned char *'

I try in many ( dummy ) ways , but in vain ...

Re: CString to const unsigned char *

wangningyu7-May-10 21:30

wangningyu

7-May-10 21:30

just like this:

std::string encoded_login = base64_encode(m_sLogin.GetBuffer(m_sLogin.GetLength()),m_sLogin.GetLength());

Re: CString to const unsigned char * [modified]

mesajflaviu7-May-10 23:54

mesajflaviu

7-May-10 23:54

Sorry , don't function :

error C2664: 'base64_encode' : cannot convert parameter 1 from 'char *' to 'const unsigned char *'

modified on Saturday, May 8, 2010 6:16 AM

Re: CString to const unsigned char *

David Crow10-May-10 4:26

David Crow

10-May-10 4:26

Unless the internal buffer of m_sLogin needed changed, why would you suggest using GetBuffer()?

Re: CString to const unsigned char *

wangningyu10-May-10 4:34

wangningyu

10-May-10 4:34

http://msdn.microsoft.com/zh-cn/library/ms235631(VS.80).aspx[^]

Re: CString to const unsigned char *

David Crow10-May-10 4:49

David Crow

10-May-10 4:49

Koma Wang wrote:
the error code:
error C2664: 'base64_encode' : cannot convert parameter 1 from 'class CString' to 'const unsigned char *'

You could either use:

base64_encode((LPBYTE) (LPCTSTR) m_sLogin, m_sLogin.GetLength());

base64_encode((const LPBYTE) (LPCTSTR) m_sLogin, m_sLogin.GetLength());

Re: CString to const unsigned char *

Richard MacCutchan8-May-10 1:16

Richard MacCutchan

8-May-10 1:16

Have you tried casting the CString from LPCTSTR), like this:

std::string encoded_login = base64_encode((const unsigned char*)(LPCTSTR)m_sLogin,m_sLogin.GetLength());

It's time for a new signature.

Re: CString to const unsigned char *

mesajflaviu8-May-10 2:01

mesajflaviu

8-May-10 2:01

Great ! It's working ! Thank you all !

MFC SDI based project reading virtual serial port: uses worker thread for reading data

harinathcau7-May-10 21:16

harinathcau

7-May-10 21:16

Hi all,
I created SDI based project in MFC.In View class(OnInitialUpdate()), i initialized serial port and created a worker thread which has to read data continuously and post data to a Framedialog.The Problem is ,only once the thread is posting message, not continuously.
My code is below.

UINT ClientThreadProc(LPVOID pParam)
{
  CSerialCommView *pMyprocess = (CSerialCommView *)pParam;
  
  CString mystr=pMyprocess->SerialPortContinuousRead();
  // SerialPortContinuousRead() is member of View class returns CString
  LPTSTR lpMessage = new TCHAR[mystr.GetLength()];
  _tcscpy( lpMessage , mystr);
 
 ::SendMessage(pMyprocess->GetSafeHwnd(), 
               WM_READ_DATA_AVAILABLE,0,(LPARAM)lpMessage);
  return 0;
}
// Message handler
LRESULT CSerialCommView::OnDataAvailable(WPARAM wparam, LPARAM 
                                                          lparam)
{
 LPTSTR data= (LPTSTR)lparam;	
 CMainFrame *pFrame = (CMainFrame*)AfxGetMainWnd();
 CEdit* DispBox=(CEdit*)pFrame->m_wndDlgBar.GetDlgItem(IDC_DISPLAY_BOX); 
DispBox->SetWindowTextW(data);	
return 0; // Handled message
}

Thanks in advance.

Re: MFC SDI based project reading virtual serial port: uses worker thread for reading data [modified]

Jonathan Davies8-May-10 2:18

Jonathan Davies

8-May-10 2:18

From what you've posted it looks as if your program:

Enters new thread at ClientThreadProc.

Calls SerialPortContinuousRead which presumably completes and returns a string when it receives one.

Sends the string to the handler using SendMessage doesn't return until the handler completes (Consider PostMessage).

ClientThreadProc then ends.

To read more than one message try a loop within ClientThreadProc or SerialPortContinuousRead and post (or Send) messages from there rather than returning the message from SerialPortContinuousRead and then exiting the threadproc.

modified on Saturday, May 8, 2010 8:24 AM

Setting up a WindowsAPI project

Tiberiu117-May-10 21:06

Tiberiu11

7-May-10 21:06

I have a problem setting up OpenGL in a C++ program using Win32. I have a main window that has buttons and checkboxes to control different parameters. After that I want to have two windows that will draw OpenGL code. The two child windows do not reside inside the main window, they are floating, WS_OVERLAPPEDWINDOW style(but I can make it any other style, it just has to work).

I am unsure how to properly create the two child windows and where to place the drawing code. I also do not know where to place the message loop for both of them.

Basically I press a button inside the main config window and my first window would show. If I press it again, then it should destry that window. Is there an example of something similar on the internet? Can someone help me? Thanks.

Re: Setting up a WindowsAPI project

Software_Developer8-May-10 20:48

Software_Developer

8-May-10 20:48

This thread has all the details
http://www.codeproject.com/Messages/3427974/Re-Second-Window-in-Win32.aspx

LRESULT CALLBACK childWndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK parentWndProc(HWND, UINT, WPARAM, LPARAM);


int WINAPI WinMain ()
{
  
    while (GetMessage (&messages, NULL, 0, 0))
    {
        TranslateMessage(&messages);
        DispatchMessage(&messages);
    }
    return messages.wParam;
}

 
/*  This function is called by the Windows function DispatchMessage()  */
LRESULT CALLBACK parentWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    
    switch (message)                  /* handle the messages */
    {
      ... 
    }
    return 0;
}

/*  This function is called by the Windows function DispatchMessage()  */
LRESULT CALLBACK childWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)                  /* handle the messages */
    {
      ...         
    }
    return 0;
}

Re: Setting up a WindowsAPI project

Tiberiu118-May-10 21:23

Tiberiu11

8-May-10 21:23

Thank you for your help, it is working well. However, I have a question. Where should I place the drawing code for the child window? I understand the procedure if I want to create another child window, i will call it child2. If I do create it, then where should I place the OpenGL code for it? I am not interested in drawing in the parent window, just inside the child window. Thank you again.

Re: in the child window's message pump

Software_Developer9-May-10 8:47

Software_Developer

9-May-10 8:47

Gamedev has a great article on this topic.
http://www.gamedev.net/reference/articles/article540.asp[^]

Create a function say PaintOpenGL() , put all the OpenGL stuff in that function.
place PaintOpenGL() in the child window's message pump at case WM_PAINT .

case WM_PAINT:
	PaintOpenGL();
break;

Need Help : My CHttpFile::SendRequest() , timeouts when sending data to google translator

m_code7-May-10 20:24

m_code

7-May-10 20:24

I want to use google translator aapi through an application I wrote the following code but CHttpFile::SendRequest() method always time out I could n't found what's my problem. Can any one help me?

CString szTranReq(L"/translate_a/t?client=t&sl=en&tl=tr");
	
CString szText(L"text=Hello");

CString szServer(L"www.google.com");

DWORD inetPort = 80;




CInternetSession inetSession(::AfxGetAppName(), 1, PRE_CONFIG_INTERNET_ACCESS, NULL, NULL, NULL);

inetSession.SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, 1000 * 3);
inetSession.SetOption(INTERNET_OPTION_CONNECT_BACKOFF, 1000);
inetSession.SetOption(INTERNET_OPTION_CONNECT_RETRIES, 1);

CHttpConnection* pInetHttpConnection = inetSession.GetHttpConnection(szServer, inetPort, NULL, NULL); 


CHttpFile* pHttpFile = pInetHttpConnection->OpenRequest(
	CHttpConnection::HTTP_VERB_POST,
	szTranReq, NULL, 1, NULL, NULL,
	INTERNET_FLAG_EXISTING_CONNECT | INTERNET_FLAG_DONT_CACHE);



pHttpFile->AddRequestHeaders(L"Host: www.google.com\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);
pHttpFile->AddRequestHeaders(L"User-Agent: Mozilla/5.0\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);
pHttpFile->AddRequestHeaders(L"Accept-Encoding: deflate\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);
pHttpFile->AddRequestHeaders(L"content-length: 10\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);
pHttpFile->AddRequestHeaders(L"Connection: Close\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);

pHttpFile->SendRequest();

SendRequest() Method always timeout.

Re: Need Help : My CHttpFile::SendRequest() , timeouts when sending data to google translator

Randor 9-May-10 10:22

Randor

9-May-10 10:22

Hi,

m_code wrote:
pHttpFile->AddRequestHeaders(L"content-length: 10\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);

You have hard-coded a content-length of 10 bytes but I do not see where you write these bytes. The server is timing out because it is waiting for those bytes...

Best Wishes,
-David Delaune

Re: Need Help : My CHttpFile::SendRequest() , timeouts when sending data to google translator

m_code10-May-10 18:52

m_code

10-May-10 18:52

Thanks You were right.
That solved. But Again the following returns" http status 400" which means bad request any idea why this happens:

CString szTranReq(L"/translate_a/t?client=t&sl=en&tl=tr");
	
CString szText(L"text=Hello");

CString szServer(L"www.google.com");

DWORD inetPort = 80;




CInternetSession inetSession(::AfxGetAppName(), 1, PRE_CONFIG_INTERNET_ACCESS, NULL, NULL, NULL);

inetSession.SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, 1000 * 3);
inetSession.SetOption(INTERNET_OPTION_CONNECT_BACKOFF, 1000);
inetSession.SetOption(INTERNET_OPTION_CONNECT_RETRIES, 1);

CHttpConnection* pInetHttpConnection = inetSession.GetHttpConnection(szServer, inetPort, NULL, NULL); 


CHttpFile* pHttpFile = pInetHttpConnection->OpenRequest(
	CHttpConnection::HTTP_VERB_POST,
	szTranReq, NULL, 1, NULL, NULL,
	INTERNET_FLAG_EXISTING_CONNECT | INTERNET_FLAG_DONT_CACHE);



pHttpFile->AddRequestHeaders(L"Host: www.google.com\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);
pHttpFile->AddRequestHeaders(L"User-Agent: Mozilla/5.0\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);
pHttpFile->AddRequestHeaders(L"Accept-Encoding: deflate\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);
pHttpFile->AddRequestHeaders(L"content-length: 10\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);
pHttpFile->AddRequestHeaders(L"Connection: Close\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);

pHttpFile->SendRequestEx(szText.GetLength()/*,HSR_INITIATE,1*/);
pHttpFile->WriteString(szText);
pHttpFile->EndRequest();

DWORD dwRet;
pHttpFile->QueryInfoStatusCode(dwRet);//always: dwRet is 400

Re: Need Help : My CHttpFile::SendRequest() , timeouts when sending data to google translator

Randor 11-May-10 16:40

Randor

11-May-10 16:40

Hi,

Several issues...

1.) I am fairly certain that you should not be using HTTP_VERB_POST. Change that to CHttpConnection::HTTP_VERB_GET

The URL in your code does not seem to require a POST what you need to do is perform a GET request.

http://www.google.com/translate_a/t?client=t&sl=en&tl=tr&text=Hello[^]

If you click the URL above... what you have done is a GET request. We can pass all form data in the URL.

2.) You should remove the following line:

pHttpFile->AddRequestHeaders(L"Accept-Encoding: deflate\r\n", HTTP_ADDREQ_FLAG_ADD_IF_NEW);

This instructs the server to send you data compressed with the DEFLATE [^]algorithm.

3.) Since we are no longer doing a HTTP_VERB_POST then you do not need the Content-Length header.

4.) You will need to add this header:

<br />
"Content-Type: application/x-www-form-urlencoded"

There may be more errors but I do not see them for now. Fix these errors and tell me the result.

Best Wishes,
-David Delaune

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