|
What is in query?
Maybe some field name is equal to a reserved word added in new version?
Pavel
Sonork 100.15206
|
|
|
|
|
Thanks Varel!
this query is
CString query;
query.Format(_T("SELECT * FROM %s WHERE (%s='%s') AND (%s='%s')"), table, key, value1, field, value2);
// table:"client", key:"ID", value1:"some name", field:"Pass", values"some
// password"
Is there anything wrong with the field names?
Thanks a lot!
|
|
|
|
|
I would try:
SELECT * FROM [%s] WHERE ([%s]='%s') AND ([%s]='%s')
Doesn't some of the values contain an ' character (apostrof)?
Pavel
Sonork 100.15206
|
|
|
|
|
How do I get the Handle of a Bitmap image which is created in bitmap resource editor.
|
|
|
|
|
CBitmap bBitmap;
bBitmap.LoadBitmap(RESOURCE_ID);
HBITMAP hBitHandle = (HBITMAP)bBitmap;
Bear in mind when the CBitmap goes out of scope the handle will be invalid;
You may need to make the CBitmap a member Variable
|
|
|
|
|
First you have to load the bitmap using the LoadBitmap function. This function needs the instance of the app and an LPCTSTR string identifing the resource.
HBITMAP hbm;
hbm = LoadBitmap(hInstance, MAKEINTRESOURCE(IDB_REDCHICKEN));
...
DeleteObject(hbm);
Don't forget to release the bitmap handle using DeleteObject.
-Dominik
|
|
|
|
|
Try this, I haven't checked it but somthing along these lines should do it
char szFilePath[_MAX_PATH + 1];
char szDir[_MAX_DIR + 1];
char szDrive[_MAX_DRIVE + 1];
CString szFile;
::GetModuleFileName(NULL, szFilePath, MAX_PATH);
::_splitpath(szFilePath, szDrive, szDir, NULL, NULL);
szFile = szDrive + szDir + ""MyFile.txt"
|
|
|
|
|
Hi,
In a dialog based application, I have two classes such as
class A
{
do some calculation with a thread;
}
class B : public CDialog
{
here a have a static control, to show some text or numberical
information with the varible CSting m_show;
}
My problem is how to show the text info (class A) in the main dialog (class B) when the thread is started?
Thanks in advance!
chen
|
|
|
|
|
I did something like this a few months ago. B was my main Dialog, so I just used AfxGetMainWnd in A to retrieve a Cwnd* which I casted on the B class, just as you do with the thread parameter. The result of the operation was that I had a pointer on the B class inside A, and I synchronized the whole with Critical_section, in order not to show in B data being changed simultaneously in A. 
A naive question : is it not possible to put your A data in a struct, and post it through a user message to B (I have really no idea if this is possible or not  )?
~RaGE();
|
|
|
|
|
Hi RaGE,
Thank you very much for your reply!
I want to try the first method, but would you please say that in more detail or give me an simple example project?
Best Regards,
chen
|
|
|
|
|
Declare
CRITICAL_SECTION m_cs;
int *m_myData;
as member variables in B.
In OnInitDialog of B :
InitializeCriticalSection(&m_cs);
So, in the thread A :
CWnd* pWnd=AfxGetMainWnd();
CMainDlg *pMainDlg=(CMainDlg*)pWnd;
... do some stuff ...
EnterCriticalSection(&pMainDlg->m_cs);
pMainDlg->m_myData[8]=22;
LeaveCriticalSection(&pMainDlg->m_cs);
And in the "show" section of B:
EnterCriticalSection(m_cs);
LeaveCriticalSection(m_cs);
So that's the start. You may have member variables in B which simply copies member variables of A just for display purposes. Of course, this is not a _good_ way to do multithreading, but i think that it is simple enough, and it works if the updating of data in the thread is not too time-critical.
If this doesn't work, you're going to use CEvent's ...
~RaGE();
|
|
|
|
|
If all you need to do is transfer a numeric value, use InterlockedExchange() which allows you to set a LONG as an atomic operation. (See help for explanation of Interlocked calls--if you do multithreading you should understand these.)
|
|
|
|
|
dianazheng wrote:
// Get the current time
CTime curTime = CTime::GetCurrentTime();
//Get the current date
CTime curDate = CTime::GetCurrentTime();
What is the point of this ? Both these objects are the same.
dianazheng wrote:
//Display the current date
m_sDate = curDate.Format("%b / %d / %y");
// Display the current time
m_sTime = curDate.Format("%H:%M:%S");
MSDN does not document these methods, have you tried using GetMonth/GetYear/GetDay instead ?
Christian
No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002
C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002
Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002
|
|
|
|
|
Christian Graus wrote:
// Display the current time
m_sTime = curDate.Format("%H:%M:%S");
MSDN does not document these methods, have you tried using GetMonth/GetYear/GetDay instead ?
Actually, I have this one in my MSDN, so I guess that's why dianzheng wrote that "it works for time". Anyway, Chris is right, GetMonth/Year/Day is the best way to do it.
~RaGE();
|
|
|
|
|
i have try the get month get day and get year but it still can't work that why i change it to tis way. Using this way i can get the time but i coulsn't get the date..
pls help....thanks
|
|
|
|
|
dianazheng wrote:
i have try the get month get day and get year
...  ... What's wrong ? Could you post your code again ? I'll give it a try inbetween.
~RaGE();
|
|
|
|
|
Ok, this runs perfectly :
COleDateTime dTime;
dTime = COleDateTime::GetCurrentTime();
int d=dTime.GetDay();
int m=dTime.GetMonth();
int y=dTime.GetYear();
m_sDate.Format("%i / %i / %i",d,m,y);
~RaGE();
|
|
|
|
|
Really thanks for your help,i can display the date and time directly from the computer but now i have face with another problem hope you can help me also...Thanks
I have this two error
C:\Program Files\Microsoft Visual Studio\VC98\MFC\SRC\DLGDATA.CPP(170) : error C2065: '_countof' : undeclared identifier
C:\Program Files\Microsoft Visual Studio\VC98\MFC\SRC\DLGDATA.CPP(181) : error C2065: 'AfxSetWindowText' : undeclared identifier
which i really don't know what are they but they come from the function below...Hope you can help...
AFX_STATIC void AFX_CDECL _Afx_DDX_TextWithFormat(CDataExchange* pDX, int nIDC,
LPCTSTR lpszFormat, UINT nIDPrompt, ...)
// only supports windows output formats - no floating point
{
va_list pData;
va_start(pData, nIDPrompt);
HWND hWndCtrl = pDX->PrepareEditCtrl(nIDC);
TCHAR szT[32];
if (pDX->m_bSaveAndValidate)
{
// the following works for %d, %u, %ld, %lu
::GetWindowText(hWndCtrl, szT, _countof(szT));
if (!_AfxSimpleScanf(szT, lpszFormat, pData))
{
AfxMessageBox(nIDPrompt);
pDX->Fail(); // throws exception
}
}
else
{
wvsprintf(szT, lpszFormat, pData);
// does not support floating point numbers - see dlgfloat.cpp
AfxSetWindowText(hWndCtrl, szT);
}
va_end(pData);
}
|
|
|
|
|
I have a CStatic element on my dialog.
I use the following code to show different bitmaps:
<br />
myStatic.SetBitmap(::LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_BITMAP1)) );<br />
...<br />
myStatic.SetBitmap(::LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_BITMAP2)) );<br />
...<br />
myStatic.SetBitmap(::LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_BITMAP3)) );<br />
One question: Must I call DeleteObject(...) when changing the bitmap or at the end of the dialog or does the CStatic this automaticly?
Daniel 
---------------------------
Never change a running system!
|
|
|
|
|
I'd say the fact that SetBitmap returns the previous bitmap means you need to delete them 
Christian
No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002
C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002
Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002
|
|
|
|
|
Thanks Christian!
One question: When do you sleep? 
When I take a look on the CP forums, there is no question you don't post an answer! 
Daniel
---------------------------
Never change a running system!
|
|
|
|
|
What's sleep ? I have young children.
Christian
No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002
C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002
Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002
|
|
|
|
|
You must free it...
<br />
HBITMAP hOld = myStatic.SetBitmap(::LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_BITMAP1)) );<br />
<br />
if (hOld)<br />
{<br />
DeleteObject(hOld);<br />
}<br />
Hope this helps...
|
|
|
|
|
Thanks!
Daniel
---------------------------
Never change a running system!
|
|
|
|
|
Hello Folks,
I Have a problem of painting the border window that appears when a tool-bar is in floating state.
How can i achieve this ?. I tried by creating an object of CTOOLBAR derived class.,so there's no need of subclassing.
And in the MainFrame Class ,i processed the wm_paint message where i checked the myToolBarobj.isfloating() ..and performed the futher operation. .its working ... but what if i need to trap the paint message or I need to change the Wndproc ?
Pl help if any solution of any kind is availabe.
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
