Re: Handling two or more instances of an application using VC++ 6.0 - C / C++ / MFC Discussion Boards

David Crow10-Sep-04 4:30

10-Sep-04 4:30

How often will items be added to this file? If the frequency is low, you might consider using the OS's event log. For moderate to high frequency, a database would be more suitable for the task.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Logging application

Anonymous11-Sep-04 8:18

Anonymous

11-Sep-04 8:18

My log viewer must manage the entries and I might have it on Windows 98 or ME so can not use the event viewer or an NT service. You say a database but that would mean depending on a further MS product and using an Access or SQL database wouldnt it? I have written my own database already as my log entries are objects that use CArchive to save themselves to a file. I have a COM component now that I can write entries to and it saves them in the file it manages. But now I want to have access to the log file from my log viewer and still allow other applications to write to it. Is this now a COM question? Must the COM object be multi-threaded or pooled?

Adding controls (static, edit, ..) to Tree control

Murlai10-Sep-04 2:16

Murlai

10-Sep-04 2:16

I am creating the contorls dynamically in win32 application. Can we add the windows controls like static, button, edit, check box, etc.. to TREE control?

String Matching

sweep12310-Sep-04 2:03

sweep123

10-Sep-04 2:03

Are they any classes or methods within CString to match for a character string;

e.g. I have an array of CString names[1000]; and would like to filter them using a string "xyz". The "xyz" sequence can be anywhere in the item; i.e.

CString names[1000] = {<br />
"qwerty qasdt",<br />
"zxcvbnmkh",<br />
"qwerty xyz123",

// mathc found here

etc.
};

I could write my own routine, but whats the point (could introduce errors) if one exists.

Re: String Matching

Arsalan Malik10-Sep-04 2:09

Arsalan Malik

10-Sep-04 2:09

Use int CString::Find(LPCTSTR pstr, int nStart)const Cool | :cool:

Arsalan Malik

Re: String Matching

sweep12310-Sep-04 4:05

sweep123

10-Sep-04 4:05

Thanks, I think this is waht I was looking for.

Handling two or more instances of an application using VC++ 6.0

Neeranjan10-Sep-04 1:43

Neeranjan

10-Sep-04 1:43

Hi,

I have an application in VC++ 6.0 which generates a tree from the database files.
This application allows to open more than one instaces.

First I start the first instance of this application and opens a database file which generates the tree.(Now the data is present in the memory variables. When I save the project the data is stored in the Workspace).
Now I start the second instance of same application and open the same database file (which I opened in first instance of this application). But I want to restrict this second instance of application to open the same data files(which is already opened in the first instance). Because this will pose danger to the data.

Plz any ideas/samples/project send it to me.
I will be very greatfull for your help and support.

Thanks & Regards,
Neeraj

Re: Handling two or more instances of an application using VC++ 6.0

Arsalan Malik10-Sep-04 2:04

Arsalan Malik

10-Sep-04 2:04

You need to open your database as exclusive. This will restrict any other application (including second instance of same application) to open the database.

Another suggestion is to make your application single instance, i.e. only one instance can be run. See following for details:
http://www.codeproject.com/threads/simplesingleinstanceapp.asp

Arsalan Malik

Re: Handling two or more instances of an application using VC++ 6.0

jmkhael10-Sep-04 5:04

jmkhael

10-Sep-04 5:04

Adding to the above answer, you can also communicate between the instances (Check the IPC Section) to filter the selection to just this database

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Porting From Vc++6.0 to Vc .net

Sivasankar A10-Sep-04 0:25

Sivasankar A

10-Sep-04 0:25

Hi,

I was trying recompile my VC++6.0 to VC++ .Net. When i try to load in VC++ .net it says an unspecified error. then i made a new solution. Added a new MFC extension DLL. and copied the source files. Then all the files got compiled. But it is giveing a linket warning and error as given below..

I feel these are just setting issue. Can some one help.

MSDN Help says include a definition of the _check_commonlanguageruntime_version OR link with nochkclr.obj.

i am new to .net. Can someone Help.

Cheers
Siva

==================================
PersistenceInterface.obj : warning LNK4217: locally defined symbol ??1CEDataTypeMap@@UAE@XZ (public: virtual __thiscall CEDataTypeMap::~CEDataTypeMap(void)) imported in function "protected: virtual __thiscall IEPersistent::~IEPersistent(void)" (??1IEPersistent@@MAE@XZ)
ErosDTs.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall CList::~CList(void)" (__imp_??1?$CList@PAVCEDataTypeMap@@PAV1@@@UAE@XZ) referenced in function "public: virtual __thiscall CEDataTypeMapList::~CEDataTypeMapList(void)" (??1CEDataTypeMapList@@UAE@XZ)
ErosDTs.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class CEDataTypeMap * & __thiscall CList::GetNext(struct __POSITION * &)" (__imp_?GetNext@?$CList@PAVCEDataTypeMap@@PAV1@@@QAEAAPAVCEDataTypeMap@@AAPAU__POSITION@@@Z) referenced in function "public: virtual __thiscall CEDataTypeMapList::~CEDataTypeMapList(void)" (??1CEDataTypeMapList@@UAE@XZ)
ErosDTs.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: struct __POSITION * __thiscall CList::GetHeadPosition(void)const " (__imp_?GetHeadPosition@?$CList@PAVCEDataTypeMap@@PAV1@@@QBEPAU__POSITION@@XZ) referenced in function "public: virtual __thiscall CEDataTypeMapList::~CEDataTypeMapList(void)" (??1CEDataTypeMapList@@UAE@XZ)
ErosDTs.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) const CEDataTypeMapList::`vftable'" (__imp_??_7CEDataTypeMapList@@6B@) referenced in function "public: virtual __thiscall CEDataTypeMapList::~CEDataTypeMapList(void)" (??1CEDataTypeMapList@@UAE@XZ)
ErosDTs.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall CMap > >,char const *,class CEDataType *,class CEDataType *>::~CMap > >,char const *,class CEDataType *,class CEDataType *>(void)" (__imp_??1?$CMap@V?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@PBDPAVCEDataType@@PAV3@@@UAE@XZ) referenced in function "public: virtual __thiscall CEDataTypeMap::~CEDataTypeMap(void)" (??1CEDataTypeMap@@UAE@XZ)
ErosDTs.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall CMap > >,char const *,class CEDataType *,class CEDataType *>::GetNextAssoc(struct __POSITION * &,class ATL::CStringT > > &,class CEDataType * &)const " (__imp_?GetNextAssoc@?$CMap@V?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@PBDPAVCEDataType@@PAV3@@@QBEXAAPAU__POSITION@@AAV?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@AAPAVCEDataType@@@Z) referenced in function "public: virtual __thiscall CEDataTypeMap::~CEDataTypeMap(void)" (??1CEDataTypeMap@@UAE@XZ)
ErosDTs.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: struct __POSITION * __thiscall CMap > >,char const *,class CEDataType *,class CEDataType *>::GetStartPosition(void)const " (__imp_?GetStartPosition@?$CMap@V?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@PBDPAVCEDataType@@PAV3@@@QBEPAU__POSITION@@XZ) referenced in function "public: virtual __thiscall CEDataTypeMap::~CEDataTypeMap(void)" (??1CEDataTypeMap@@UAE@XZ)
ErosDTs.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) const CEDataTypeMap::`vftable'" (__imp_??_7CEDataTypeMap@@6B@) referenced in function "public: virtual __thiscall CEDataTypeMap::~CEDataTypeMap(void)" (??1CEDataTypeMap@@UAE@XZ)
Message.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) const CEMessage::`vftable'" (__imp_??_7CEMessage@@6B@) referenced in function "public: __thiscall CEMessage::CEMessage(class ATL::CStringT > >,long,enum EMessageType)" (??0CEMessage@@QAE@V?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@JW4EMessageType@@@Z)
PersistenceInterface.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall CMap > >,char const *,class CEDataType *,class CEDataType *>::RemoveAll(void)" (__imp_?RemoveAll@?$CMap@V?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@PBDPAVCEDataType@@PAV3@@@QAEXXZ) referenced in function "protected: virtual __thiscall IEPersistent::~IEPersistent(void)" (??1IEPersistent@@MAE@XZ)
PersistenceInterface.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) const IEPersistent::`vftable'" (__imp_??_7IEPersistent@@6B@) referenced in function "protected: virtual __thiscall IEPersistent::~IEPersistent(void)" (??1IEPersistent@@MAE@XZ)
SearchType.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall CList::~CList(void)" (__imp_??1?$CList@PAVCESearchType@@PAV1@@@UAE@XZ) referenced in function __unwindfunclet$??0CESearchTypeList@@IAE@XZ$0
SearchType.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: struct __POSITION * __thiscall CList::AddTail(class CESearchType *)" (__imp_?AddTail@?$CList@PAVCESearchType@@PAV1@@@QAEPAU__POSITION@@PAVCESearchType@@@Z) referenced in function "protected: __thiscall CESearchTypeList::CESearchTypeList(void)" (??0CESearchTypeList@@IAE@XZ)
SearchType.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) protected: __thiscall CESearchType::CESearchType(void)" (__imp_??0CESearchType@@IAE@XZ) referenced in function "protected: __thiscall CESearchTypeList::CESearchTypeList(void)" (??0CESearchTypeList@@IAE@XZ)
SearchType.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) const CESearchTypeList::`vftable'" (__imp_??_7CESearchTypeList@@6B@) referenced in function "protected: __thiscall CESearchTypeList::CESearchTypeList(void)" (??0CESearchTypeList@@IAE@XZ)
SearchType.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall CList::CList(int)" (__imp_??0?$CList@PAVCESearchType@@PAV1@@@QAE@H@Z) referenced in function "protected: __thiscall CESearchTypeList::CESearchTypeList(void)" (??0CESearchTypeList@@IAE@XZ)
SearchType.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) protected: virtual __thiscall CESearchType::~CESearchType(void)" (__imp_??1CESearchType@@MAE@XZ) referenced in function "protected: virtual void * __thiscall CESearchType::`scalar deleting destructor'(unsigned int)" (??_GCESearchType@@MAEPAXI@Z)
SearchType.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall CList::RemoveAll(void)" (__imp_?RemoveAll@?$CList@PAVCESearchType@@PAV1@@@QAEXXZ) referenced in function "protected: virtual __thiscall CESearchTypeList::~CESearchTypeList(void)" (??1CESearchTypeList@@MAE@XZ)
SearchType.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class CESearchType * & __thiscall CList::GetNext(struct __POSITION * &)" (__imp_?GetNext@?$CList@PAVCESearchType@@PAV1@@@QAEAAPAVCESearchType@@AAPAU__POSITION@@@Z) referenced in function "protected: virtual __thiscall CESearchTypeList::~CESearchTypeList(void)" (??1CESearchTypeList@@MAE@XZ)
SearchType.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: struct __POSITION * __thiscall CList::GetHeadPosition(void)const " (__imp_?GetHeadPosition@?$CList@PAVCESearchType@@PAV1@@@QBEPAU__POSITION@@XZ) referenced in function "protected: virtual __thiscall CESearchTypeList::~CESearchTypeList(void)" (??1CESearchTypeList@@MAE@XZ)
Debug/ErosDTs.dll : fatal error LNK1120: 20 unresolved externals
===================================

SetImageList() don’t work (se my code)

anderslundsgard10-Sep-04 0:11

anderslundsgard

10-Sep-04 0:11

Look at this:

<br />
CImageList  *m_pimagelist = new CImageList();<br />
m_pimagelist->Create( 16, 16, ILC_COLOR8, 0, 4);<br />
	<br />
HICON icon = AfxGetApp()->LoadIcon( IDI_ICON1 );<br />
if( icon == NULL )<br />
; // This Doesn’t happen<br />
<br />
int ret = m_pimagelist->Add( icon );<br />
ret = m_pimagelist->Add( icon );<br />
ret = m_pimagelist->Add( icon );<br />
<br />
int count = m_pimagelist->GetImageCount();<br />
<br />
// count is now correctly == 3<br />
// So far so good<br />
	<br />
SetImageList( m_pimagelist, TVSIL_NORML );<br />
	<br />
CImageList *p = GetImageList(TVSIL_NORML);<br />
	<br />
if( p == NULL )<br />
; // THIS HAPPENS!!<br />

How come that “SetImageList( m_pimagelist, TVSIL_NORML )” Doesn’t work?

All suggestions are welcomed!!

_____________________________

...and justice for all

APe

Displaying the Image file on the View

Neelesh K J Jain9-Sep-04 23:32

Neelesh K J Jain

9-Sep-04 23:32

Hello Friends,
I couldn't able to display a bitmap file which is present at the location "c:\images\1.bmp" in the view whenever i execute my program. Please help regarding this matter.
thank you,
Bye friends

Re: Displaying the Image file on the View

Arsalan Malik10-Sep-04 0:07

Arsalan Malik

10-Sep-04 0:07

Visit this:
http://www.codeguru.com/Cpp/G-M/bitmap/displayingandsizing/article.php/c4905/ Cool | :cool:

Arsalan Malik

where to start ?

sreejith ss nair9-Sep-04 22:49

sreejith ss nair

9-Sep-04 22:49

hi,

My programming background is c,c++ and C#. Now i am little bit crazy abt VC++ and MFC. i don't know which book is too very good for beggners like me.

**************************
S r e e j i t h N a i r
**************************

Re: where to start ?

kriaz9-Sep-04 23:02

kriaz

9-Sep-04 23:02

I believe that for beginner VC++ 6 by sams publisher is best. later on shift to MSDN. (I know nothing about .NETness)

Showing Bitmap on the View

Neelesh K J Jain9-Sep-04 22:35

Neelesh K J Jain

9-Sep-04 22:35

Hello Friends,
I am here again with a new query.
I am doing a project where I have to display 2 bitmap images in a single row and the number of rows depends on the number of bitmap images present in the directory from where we display the bitmap images. the images should be displayed only on 120 x 120 like a thumbnail view in the windows explorer.

Bye bye
thank you

Re: Showing Bitmap on the View

lookforme_prash9-Sep-04 23:26

lookforme_prash

9-Sep-04 23:26

Hello
Get the number of bitmaps to show. Create those many butons with size 120 X 120 at runtime. Arrange them on screen by calculating client area. Load the bitmaps on buttons.

Regards,
Prashant

Re: Showing Bitmap on the View

Neelesh K J Jain9-Sep-04 23:46

Neelesh K J Jain

9-Sep-04 23:46

Hi Prashant,
Can u please explain with code and what are the type of buttons to be used.
Bye bye
Thank you

enumerating ALL clients in my domain

e-DJ9-Sep-04 21:20

e-DJ

9-Sep-04 21:20

Hi all,

I need a listbox, containing all clients attached to my domain. When using WNetOpenEnum, I only get the clients which are running right now. a switched off client does not show up.

I also need a list of users in my domain.
I need my program running un my DomainController, so it should be quite easy to have access to all data.
When using WNetOpenEnum, I can pass an argument GLOBALNET, but the results are somehow confusing. Documentation is quite poor on this subject.

The projects I found here, only show running clients.

Can anybody help?

e-DJ

Re: enumerating ALL clients in my domain

David Crow10-Sep-04 2:58

David Crow

10-Sep-04 2:58

You need to use NetUserEnum().

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: enumerating ALL clients in my domain

e-DJ12-Sep-04 20:47

e-DJ

12-Sep-04 20:47

Thanks,
looks like this is what I was searching for. I will try as soon as time permits

e-DJ

Send and receive data through port using MFC Dialog Based

anuchelvi9-Sep-04 20:59

anuchelvi

9-Sep-04 20:59

HI,
My module is to send and receive messages through the com port.
For that i've to set the com port using vcpp.
I've to use 2 dialog box , 1 for com port settings and another is to send and receive characters thro' 2 multi line edit boxes using 2 control buttons.
For port settings,i've to use combo box.
PLs help me.

mithila

Automation and Impersonation

lookforme_prash9-Sep-04 20:10

lookforme_prash

9-Sep-04 20:10

Hi My Client application is supposed to read files stored on server. My requirement is not to share server drives. So I created a hiden user on server and shared drives for it. When I launch my application on client machine I use CreateProcessWithLogonW and swith to the hidden user so that I can access the file on server. This works fine.
But I have given automation support for my application. When a third party application call createdispatch of my client application dispatch gets created but my application doesnt get desktop. Also the calling application cant get dispatch handle back.
If I stoppped locading profile through CreateProcessWithLogonW then everything works fine on XP but it gives problem on 2k.
What can be a solution for this problem.

Regards,
Prashant

Under standing before driving your own class

Zohaib Sibte Hassan9-Sep-04 20:02

Zohaib Sibte Hassan

9-Sep-04 20:02

What things are important to understand before driving a class form any object(CButton , CWnd etc) can some one provide me a detailed link Smile | :)

How do I Create a class with class wizard that derives from CObject?

Ian Bowler9-Sep-04 19:46

Ian Bowler

9-Sep-04 19:46

How do I create a new class that derives directly from CObject using Class Wizard? When I use Class Wizard to create a new class, CObject is not one of the available options in the Base Class list.

-Ian

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