C / C++ / MFC

1-Mar-05 8:07

I am retriving a string from a SQL database. At the end of the string I need to add a hex 00 and a hex 04. No matter what I do I cannot seem to get the hex 00 and hex 04 tagged to the end.

I've tried do this with a byte array, a char array, CString.format. Nothing.
Here is my most recent code:

<br />
			CString mySQLData = (char*)(_bstr_t)pRecordset->Fields->GetItem("MDC1_DATA_TEXT")->Value;<br />
<br />
			char* myStringMsg = new char[strlen(mySQLData)];<br />
			strcpy(myStringMsg, mySQLData);<br />
			myStringMsg[strlen(mySQLData)] = 0x00;<br />
			myStringMsg[strlen(mySQLData)+1] = 0x04;<br />
<br />
			iSent = m_sConnectSocket.Send(myStringMsg, strlen(myStringMsg));<br />

Could someone please give me some insight into solving this problem.
Thanks

Tom Wright
tawright915@yahoo.com

peterchen1-Mar-05 8:57

peterchen

1-Mar-05 8:57

Two problems:

char* myStringMsg = new char[strlen(mySQLData)];

buffer allocated to small (use strlen(mySQLData)+2)

Send(myStringMsg, strlen(myStringMsg));

strlen assumes myStringMsg is zero-terminated, therefore, the additional characters are mot sent.
use strlen(mySQLData)+2

(The second point holds true for strlen(mySQLData), the length returned "stops" at the first (char)0 encountered.

Pandoras Gift #44: Hope. The one that keeps you on suffering.
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Tom Wright1-Mar-05 11:10

1-Mar-05 11:10

Nope. Still not passing the 0x00 and 0x04. Is there some other way to do it? In my older application I had a char 30000 large, and moved the string into it. But because it was a C-ISAM database that I was getting the string from, it did not strip out the 0x00 and 0x04 and I just passed the char value to the send function.

Since it seems as though SQLserver does strip the 0x00 and 0x04, I've got to try and put it in myself.

thanks for the help

Tom Wright
tawright915@yahoo.com

peterchen1-Mar-05 11:37

peterchen

1-Mar-05 11:37

Could it be that the appendix is written (now), but isn't read from the database?
How is the column defined, and how do you read it?

Pandoras Gift #44: Hope. The one that keeps you on suffering.
boost your code || Fold With Us! || sighist | doxygen

Tom Wright1-Mar-05 12:07

1-Mar-05 12:07

the column is a text. I read it like this:

<br />
	try<br />
	{<br />
		pCommand.CreateInstance(__uuidof(Command));<br />
		pCommand->ActiveConnection = m_pConnection;<br />
		pCommand->CommandText = _bstr_t("SELECT TOP 1 MDC1_DATA_TEXT FROM MDC1 WHERE (MDC1_I_O = 'O')");<br />
		pRecordset.CreateInstance(__uuidof(Recordset));<br />
		pRecordset->CursorLocation = adUseClient;<br />
		pRecordset->Open((IDispatch*) pCommand, <br />
			vtMissing,<br />
			adOpenStatic,<br />
			adLockBatchOptimistic,<br />
			adCmdUnknown);<br />
		_variant_t MDC1_DATA_TEXT;<br />
<br />
		while (!pRecordset->adoEOF)<br />
		{<br />
			CString mySQLData = (char*)(_bstr_t)pRecordset->Fields->GetItem("MDC1_DATA_TEXT")->Value;<br />

Tom Wright
tawright915@yahoo.com

peterchen1-Mar-05 18:37

peterchen

1-Mar-05 18:37

I guess you have to change the column type to binary/BLOB.

Pandoras Gift #44: Hope. The one that keeps you on suffering.
boost your code || Fold With Us! || sighist | doxygen

Tom Wright1-Mar-05 12:08

1-Mar-05 12:08

forgot to mention that when I look at this field through enterprise manager it's missing the 0x00 and 0x04.

Tom Wright
tawright915@yahoo.com

Custom icon for an app

Alton Williams1-Mar-05 7:07

Alton Williams

1-Mar-05 7:07

HI all,
When creating an MFC (SDI / MDI). How do I get the app (EXE file) to display an icon of my choice in the directory area, instead of the annoying default IDR_MAINFRAME? Also, the with associated document, should I decided to serialise them.

Your guruship is most welcome.
Alton

Blake Miller1-Mar-05 7:19

Blake Miller

1-Mar-05 7:19

Edit the two default icons presented in the Resources tab.
There should already be one for the EXE and another for the document.
If you want them to be different for some reason, then add additional icons to the resources and track down where they are loaded and assigned. Override those functions to return the icons of your choosing loaded from the resources.

Alton Williams1-Mar-05 7:31

Alton Williams

1-Mar-05 7:31

Tried that, It works for the frame when app is up and running.
I've also rename say IDI_ICON1 to IDR_MAINFRAME and puts up a stubborn resistance.

Thanks, Blake anyway.
Alton

Michael Dunn1-Mar-05 7:36

Michael Dunn

1-Mar-05 7:36

Explorer shows the icon with the lowest resource ID, so create a new icon and give it ID 1 (or anything lower than IDR_MAINFRAME).

--Mike--
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Setting checkbox state in OnInitDialog?

David Crow1-Mar-05 9:07

David Crow

1-Mar-05 9:07

The easiest way to do this is to simply replace the two .ico files.

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1-Mar-05 6:59

How do you set a checkbox to checked on program startup?
IDC_CHECK SetCheck(IDC_CHECK) doesn't seem to work. Do I need a handle to the checkbox???

THX

Blake Miller1-Mar-05 7:23

Blake Miller

1-Mar-05 7:23

Yes, or else use this:

HWND hWndControl = GetDlgItem(this->m_hWnd, IDC_CHECK);<br />
SendMessage(hWndControl, IDC_CHECK, BM_SETCHECK, wParam, BST_CHECKED, 0);

Member 16972731-Mar-05 7:33

Member 1697273

1-Mar-05 7:33

Blaine,
Thank you for taking the time to answer this simple question. When I tried to implement your suggestion I got this ...

4030R TestingDlg.cpp
C:\CCViews\ggerber_view\cmd_proc\4030R Hemi Test\4030R TestingDlg.cpp(123) : error C2664: 'void __thiscall CWnd::GetDlgItem(int,struct HWND__ ** ) const' : cannot convert parameter 1 from 'struct HWND__ *' to 'int'
This conversion requires a reinterpret_cast, a C-style cast or function-style cast
C:\CCViews\ggerber_view\cmd_proc\4030R Hemi Test\4030R TestingDlg.cpp(124) : error C2065: 'wParam' : undeclared identifier
Error executing cl.exe.

Here is my OnInitDialog Function Code ...

BOOL C4030RDlg::OnInitDialog()
{
CDialog::OnInitDialog();

// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, true); // Set big icon
SetIcon(m_hIcon, false); // Set small icon

// TODO: Add extra initialization here
hDlgWnd = GetSafeHwnd();

THREADINFO* ptp = new THREADINFO;
ptp->hWnd = hDlgWnd;
g_pThread = AfxBeginThread(ThreadPanelRead, ptp, THREAD_PRIORITY_NORMAL, 0, CREATE_SUSPENDED);

// Creates a 12-point-Courier-font
m_Font.CreatePointFont(120, _T("Arial Bold"));

// Set Font without a member variable
GetDlgItem(IDC_EDIT_L5)->SetFont(&m_Font);
GetDlgItem(IDC_EDIT_L4)->SetFont(&m_Font);
GetDlgItem(IDC_EDIT_L3)->SetFont(&m_Font);
GetDlgItem(IDC_EDIT_L2)->SetFont(&m_Font);
GetDlgItem(IDC_EDIT_L1)->SetFont(&m_Font);

GetDlgItem(IDC_EDIT_R5)->SetFont(&m_Font);
GetDlgItem(IDC_EDIT_R4)->SetFont(&m_Font);
GetDlgItem(IDC_EDIT_R3)->SetFont(&m_Font);
GetDlgItem(IDC_EDIT_R2)->SetFont(&m_Font);
GetDlgItem(IDC_EDIT_R1)->SetFont(&m_Font);

GetDlgItem(IDC_STATUS)->SetFont(&m_Font);
GetDlgItem(IDC_TRIG_MODE)->SetFont(&m_Font);

HWND hWndControl = GetDlgItem(this->m_hWnd, IDC_CHECK1);
SendMessage(hWndControl, IDC_CHECK1, BM_SETCHECK, wParam, BST_CHECKED, 0);

g_bContAquire = false;
g_nTriggerSource = UNKNOWN_TRIGGER;

return true; // return true unless you set the focus to a control
}

I hope this helps and again thanks for helping out a newbie ...

Greg

Blake Miller1-Mar-05 7:41

Blake Miller

1-Mar-05 7:41

I forgot that GetDlgItem is also a member function of CDialog.
Same goes for SendMessage.

Okay, so give it global scope - notice two semi-colon in front of function names.
Sorry Sigh | :sigh:

HWND hWndControl = ::GetDlgItem(this->m_hWnd, IDC_CHECK1);<br />
::SendMessage(hWndControl, IDC_CHECK1, BM_SETCHECK, BST_CHECKED, 0);

See also other responses, which might be preferable in your situation, since most of the rest of your code is MFC.

Also, the m_hWnd of a dialog is valid during the OnInitDialog, certainly after the base class has been called, so you can probably reduce to this:

THREADINFO* ptp = new THREADINFO;<br />
ptp->hWnd = m_hWnd;<br />
g_pThread = AfxBeginThread(ThreadPanelRead, ptp, THREAD_PRIORITY_NORMAL, 0, CREATE_SUSPENDED);

Ravi Bhavnani1-Mar-05 7:27

Ravi Bhavnani

1-Mar-05 7:27

m_myCheckBox.SetCheck (BST_CHECKED);  // recommended
CheckDlgButton (IDC_MY_CHECKBOX, BST_CHECKED);  // not recommended

/ravi

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