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Glad could be a help!
Papa
Murex co.
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I did post a few weeks ago about a LNK2005 error with VC7 (no error on VC6 with same code)
and did not get any satisfying anwer. Now I am able to tell you more on the subject, which
seems to be a mixed template / dll export problem.
Let's say I have a MFC project with one EXE (crystal.exe) and one DLL (dutils.dll).
In the DLL, I have one class derived from CString (over simplified for the demonstration) :
////////////////////////////////////////////////////
// DCString.h
#ifdef DUTILS_IMPL
#define CLASS_DUTILS __declspec(dllexport)
#else
#define CLASS_DUTILS __declspec(dllimport)
#endif
class CLASS_DUTILS DCString : public CString
{
public:
DCString();
CString ToUpper();
};
/////////////////////////////////////////////////////
(NB : CString in a MFC7 project is now template-derived and defined as :
CStringT<TCHAR, StrTraitMFC<TCHAR, ChTraitsCRT<TCHAR>>>)
Now somewhere in my application EXE (here in DCAcquisitionHolder.cpp), if I include this file :
#include "DCString.h"
-->  I get this error (multiple times , roughly once / DCString function) :
DUtilsd.lib(DUtilsd.dll) : error LNK2005:
"public: __thiscall ATL::CStringT<char,class StrTraitMFC<char,class ATL::ChTraitsCRT<char> > >::
CStringT<char,class StrTraitMFC<char,class ATL::ChTraitsCRT<char> > >
(class ATL::CStringT<char,class StrTraitMFC<char,class ATL::ChTraitsCRT<char> > > const &)"
(??0?$CStringT@DV?$StrTraitMFC@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@QAE@ABV01@@Z)
already defined in DCAcquisitionHolder.obj
--> if I declare my DCString class like this :
///////////////////////////
class DCString public CString // no __declspec(dllexport) or __declspec(dllimport)
{
(...)
}
///////////////////////////
Of course I have an error like this (class is not exported) :
DCAnalysis.obj : error LNK2019: unresolved external symbol
"public: class ATL::CStringT<char,class StrTraitMFC<char,class ATL::ChTraitsCRT<char> > >
__thiscall DCString::ToUpper(void)" (... etc...)
Do you have any idea how I could combine a correct export of the class with no double definition ?
Many many thanks for your help.
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Hi,
In my application, I want to load an old version vc++ project file in workspace, but i cannot load it---- "workspace 0".
Did you know where can i get proper settings of VC++6.0 for successfully load an old project file with *.dsp, *.dsw and some *.cpp *.h files.
Thanks in advance!
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In fact, I want to use TerminateProcess() to terminate a running program from another program. But I don't know how to get the HANDLE which must be provided as the parameters. Who call tell me how to do this or provide me some other solution. Thanks in advance.
Kidd
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What about reading:
http://www.codeproject.com/threads/asyncprocnotify.asp
A better way i guess!
Papa
Murex Co.
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Yes, it is a better way. But the process handle has to be got by calling CreateProcess() or ShellExecuteEx(). If I begin a process A from windows and then begin a process B from windows instead of using the above functions to spawn process B from process A. How can I get the process B handle from process A to stop process B. Should windows keeps all the process handles have launched? Thanks
Kidd
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Hi all
i'm writing a visual c++ isapi and trying to stress it with concurrency execution
my question is why if i insert for example a line with Sleep(5000) in isapi code
the number of concurrency users is always <= 10 ? Actually if i try with 11 or more requests
to IIS i have too many users error (403.9).
I know (probably dont know..) that IIS has a potential of about 500 contemporary requests before
this kind of error. I tried with win2000 professional and server edition.
thanx in advance for any help
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By using escapecomm function we can set DTR but it the goes off after the insruction execute. Is there any other method to set it permanantly on and checking DSR other than using loop.
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U can, u have to set the DCB. In order to stop looping u have to wait for event notification, then go check the serial by getmodemstatus
A usefull class:
http://www.codeproject.com/system/cserialport.asp
Papa
Murex Co.
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Also you have to open your serial port in overlapped mode.
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Hi!
I need to know the structure of the library (.lib), and to understand when and how it is created. Can somebody point me to the right direction. The "LIB Reference" of MSDN is too less than enough.
Thanks in advance.
Regards,
Gennady
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*.lib files are library files that may contain functions and or classes. A static lib is one which can be linked with an executable such that the exe is appended with the entire library. For dynamic libs, the lib files only contain the definitions and some meta information. When the exe is run, the exe will load the required dll that corresponds to the lib file and call the functions.
Nish
Author of the romantic comedy
Summer Love and Some more Cricket [New Win]
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Hi, Nish!
I know what it is the .lib in common. This "some meta"  is exactly of my interest. For example: how the call to the DLL exported functions implemented in the export lib? Is ordinal used here, may I manage this and how?
Sure there is a lot of info concerning this issue. I don't want to annoy the community with online questionnaire, so I've asked for references.
Thank you anyway.
Regarads,
Gennady
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Try searching MSDN for DumpCOFFLibFile. It's inside an article written by Matt Pietrek and should at least give you a starting point.
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please answer me at this wenpage if you know,
i need to use that programming in windows 98 now,
past, i try but cannot compile windows 2000 code in this
O/S.
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Win2K API calls that were not present in 98 WILL NOT work on Win 98! Don't even attempt it. If you want to create an app that runs on 98/NT/2K etc. use only those calls that are valid on a Windows 98 machine!
Nish
Author of the romantic comedy
Summer Love and Some more Cricket [New Win]
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You must elimate the errors.;)
Don´t call these functions under win98 -> change the code: if( !bwin98 )
Another way it to load the dll dynamic and if it doesen´t you can´t do that. 
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I am working on a project.The problem is that I want to make a control which connects to the database and shows the contents as a display in moving form i.e a moving text display.I am not surte whether to use a CStatic class.If yes how to display a moving text in it.If not what to do??
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How about a simple window redrawing the text with the help
of a timer ??
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The project I am trying to make is in ATL.More over the effect should of a moving banner.
The data to be displayed will be coming from the database and constantly changing.
How do I redraw the text?? There is no WM_PAINT in ATL
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As above,
is there any thing i need to follow in order for it to work?
Sometime it works sometime it does'nt.
Thanxs
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Get Visual Assist from www.wholetomato.com. It fixes and enhances it.
Christian
I am completely intolerant of stupidity. Stupidity is, of course, anything that doesn't conform to my way of thinking. - Jamie Hale - 29/05/2002
Half the reason people switch away from VB is to find out what actually goes on.. and then like me they find out that they weren't quite as good as they thought - they've been nannied. - Alex, 13 June 2002
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Thanxs. it's really a good addon for visual c++.
Thanxs again!
P.S. I think i'm getting spoilt by Visual Assist
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Hi,
I have the problem with the ListControl printing. I can print out the contents of the ListControl but I "can not print" the Header Column titles. I can read the them and print as text, but the Font, size, tab and spacing are too hard for matching with the ListControl contents (because the ListControl frame can be position differently and print out (Client) also different method! Here is my print out the ListControl program
==========================================================================
void CNewDlg::OnBntPrint()
{
CPrintDialog dlg (FALSE);
RECT rc;
DIBSECTION ds;
if (dlg.DoModal() == IDOK)
{
HDC hdc = dlg.GetPrinterDC();
CDC dc;
SaveDC(hdc);
DOCINFO docinfo;
memset(&docinfo, 0, sizeof(docinfo));
docinfo.cbSize = sizeof(docinfo);
docinfo.lpszDocName = _T("CDC::StartDoc() Code Fragment");
dc.Attach(hdc);
if (dc.StartDoc(&docinfo) < 0)
{
MessageBox(_T("Printer wouldn't initalize"));
}
else
{
if (dc.StartPage() < 0)
{
MessageBox(_T("Could not start page"));
dc.AbortDoc();
}
else // ***> actually do some printing
{
int oldMapMode = dc.SetMapMode(MM_ISOTROPIC);
CSize ptOldWinOrg = dc.SetWindowOrg(-30, -30);
CSize ptOldWinExt = dc.SetWindowExt(1, 1);
CSize ptOldViewportExt = dc.SetViewportExt(4, 4);
m_report.Print(&dc, PRF_OWNED);
m_report.Print(&dc, PRF_CHILDREN);
m_report.Print(&dc, PRF_NONCLIENT);
m_report.Print(&dc, PRF_CHECKVISIBLE);
m_report.Print(&dc, PRF_CLIENT); // print the ListControl contents!
}
dc.EndPage();
dc.EndDoc();
RestoreDC(hdc,0);
}
}
}
==============================================================================
Is there any way to print the Header Column titles? Did I miss some thing here?
Thanks for all advices,
ThanhChau
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