C / C++ / MFC Discussion Boards

Re: Stupid question answered thousand times

moliate11-Dec-01 2:09

11-Dec-01 2:09

There are some different approaches. Do you want to add the controls to the browser (BHO) or to the document (ActiveX)? An article on BHO:s can be found here:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwebgen/html/bho.asp

If you want the controls in the document, try an ActiveX Document Server.

/moliate

'Pushing' a thread...

Mr.Freeze10-Dec-01 22:38

Mr.Freeze

10-Dec-01 22:38

Hi,

I'm wondering if it is possible to 'push' a thread to execute more often when another thread is waiting for some data from the first one?

The concret case is the following: My application created a secondary thread for displaying data. The main thread modifies that data and to avoid displaying wrong data I use flags.
When the secondary thread is busy, the first one waits until the security flag is reset. Depending on the compiler options the results are different: for 'standard optimization' there is no problem, but for 'speed optimized' the main thread waits forever because somehow the secondary thread doesn't continue... ??
Can someone help ??

Thanks Smile | :)

Re: 'Pushing' a thread...

Krouer10-Dec-01 22:45

Krouer

10-Dec-01 22:45

You can increase the thread priority SetThreadPriority in MSDN

Re: 'Pushing' a thread...

Nish Nishant11-Dec-01 0:38

Nish Nishant

11-Dec-01 0:38

Set the priority to THREAD_PRIORITY_HIGHEST or even THREAD_PRIORITY_TIME_CRITICAL, do your stuff and then put it back to THREAD_PRIORITY_NORMAL

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Re: 'Pushing' a thread...

markkuk11-Dec-01 0:52

markkuk

11-Dec-01 0:52

Have you declared the flag variable as volatile? If you didn't, the compiler doesn't know it may be changed in another thread, and can optimize away checks for its value.

Re: 'Pushing' a thread...

Michael Dunn11-Dec-01 8:22

Michael Dunn

11-Dec-01 8:22

When you say a "flag" do you mean a bool variable? If so, then that is the wrong way to synchronize threads. Use a critical section instead. See InitializeCriticalSection() and related APIs.

--Mike--
http://home.inreach.com/mdunn/
Help! Help! I'm being repressed!!
Heart | [heart]

your

with

and

Sonork - 100.10414 AcidHelm

Re: 'Pushing' a thread...

Mr.Freeze11-Dec-01 13:35

Mr.Freeze

11-Dec-01 13:35

Thanks for all your replies.
It's right, I forgot to specify the flag as 'volatile'. Without this even when increasing the other thread's priority it wouldn't have worked.
But I didn't use a critical section... I'll try to implement it in future Smile | :)

cheers

Marc

looking for panacea....how invoke method of Server in a Container

Ahmad9910-Dec-01 22:24

Ahmad99

10-Dec-01 22:24

About Server Application
.........................
The server is a full server with automation support.
Server Applcation name is "TestServer"

About Container Application
Container Application name is "CONTAIN"

I am embedding server application in container by using following code

CCONTAINCntrItem* pCntrItem;
CCONTAINDoc* pDoc = GetDocument();
pCntrItem= new CCONTAINCntrItem(pDoc);
CLSID clsid;
CLSIDFromProgID(L"TestServer.document",&clsid);
pCntrItem->CreateNewItem(clsid);
pCntrItem->DoVerb(OLEIVERB_SHOW, this);

It works well.

Now What is the problem?
----------------
i want to provide some information to the "TestServer" before embedding. so how i provide this information from "CONTAIN" to "TestServer".
One way is that "TestServer" should have a method like SendData(CString strData), but how i invoke this method in "CONTAIN".

Crystal Reports

imrancs_qau10-Dec-01 21:50

imrancs_qau

10-Dec-01 21:50

How can I generate reports in vc++ like we can in vb.Can you tell me any other way or way of using crystal repors in my application.Please give me an example.
Thanks

imran

how to Run Visual c++ program in another computer that haven't visual c++?

nemati10-Dec-01 21:23

nemati

10-Dec-01 21:23

I Write a Visual C++ Program and I Want Run This Program in Other Computer That Haven't Visual C++(Don't Install Visual C++)a I Have a Problem.How to Run This Program..
Or
I Want Visual C++ 6 Runtime Library
Or
Another Way to Help Me.
thanks for your help
Confused | :confused:

Re: how to Run Visual c++ program in another computer that haven't visual c++?

Sito Dekker10-Dec-01 22:49

Sito Dekker

10-Dec-01 22:49

Copy msvcrt.dll (or msvcrtd.dll for a debug build) to \winnt\system32 (or similar).

Re: how to Run Visual c++ program in another computer that haven't visual c++?

Joaquín M López Muñoz10-Dec-01 23:12

Joaquín M López Muñoz

10-Dec-01 23:12

Select the static version of the runtime library: Project->Settings->C/C++ sheet->Category: Code Generation->Use run-time library: Multithreaded or Debug Multithreaded, depending on the configuration you're changing the settings for.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: how to Run Visual c++ program in another computer that haven't visual c++?

Nish Nishant11-Dec-01 0:40

Nish Nishant

11-Dec-01 0:40

Use Dependency Walker to find out the required DLLs

or link MFC statically

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

how to Visual c++ program in another computer that haven't visual c++?

nemati10-Dec-01 21:22

nemati

10-Dec-01 21:22

Re: how to Visual c++ program in another computer that haven't visual c++?

Krouer10-Dec-01 22:43

Krouer

10-Dec-01 22:43

When you compile a project, you get an exe or a dll or a lib file.

Exe file can run on every windows platform, that's the application extension.
Dll file can be run also if you install a application using it.
Lib file must be link into an exe or a dll before usage.

Re: how to Visual c++ program in another computer that haven't visual c++?

moliate11-Dec-01 2:18

moliate

11-Dec-01 2:18

If the problem is that you get some error-messages about missing modules, you just need to locate the .dll:s missing and copy them to the new computer (like you do with the VB runtime).

/moliate

Re: how to Visual c++ program in another computer that haven't visual c++?

Carlos Antollini11-Dec-01 3:05

Carlos Antollini

11-Dec-01 3:05

Use the depends app, that application will say you the depends of your application, the dll that you need. You need to take care because some dll are in the operating system, and other can be in a old version....

Best Regards.

Carlos Antollini.
Sonork ID 100.10529 cantollini

Stack Overflow Problem

haris10-Dec-01 21:19

haris

10-Dec-01 21:19

I am developing a media player,but due to a stack overflow during runtime my whole application crashes...how to tackle this problem. Please help me??? Confused | :confused:

harish
software engineer

Re: Stack Overflow Problem

Krouer10-Dec-01 22:56

Krouer

10-Dec-01 22:56

Use the heap instead of the stack. Did you have a fonction using a array define on the stack like:

void myfunction(tatata)
{
DWORD data[1024]; // 1024*4 bytes allocated on the stack
DWORD *pdata = new DWORD[1024]; // 1024*4 bytes allocated on the heap

....
}

Does that help?

Re: Stack Overflow Problem

Alvaro Mendez11-Dec-01 5:55

Alvaro Mendez

11-Dec-01 5:55

Use the debugger.

Run your program inside the debugger and before it gets to the stack overflow, open the Debug/Exceptions box and look for the "Stack Overflow" exception. Click on the "Stop always" radio button and then OK. Continue running. When the stack overflow occurs, the program will stop at the point where it's happening. That should give you a clue as to why it's happening and you can then fix it.

Good luck,
Alvaro

Problem with Popup Window ( Open in new window...OnNewWindow2 function )

10-Dec-01 21:01

Hi there,

I'm working on webbrowser kind of application. I have a problem in open in new window part. I want to open the new link in the new frame of my mdi application. that part is done but i face the problem with popup windows. for that i need the exact dimention(height+width) of the popup window which is set in the script.

is there any way to get the exact size of the popup window?? i can get the height and widht usign get_Height and get_Width function of iwebbrowser2 interface but it doesnt give me the exact dimention all the times. in lot of popup windows it gives the wrong size.

if anybody knows the soln. pls help me out.

thanx in advance,
Paras Shah

Urgent! Problem with MSWord component!

tuyle10-Dec-01 20:49

tuyle

10-Dec-01 20:49

I use MSWord component in my project. I create a new MSWord document with name such as "d:\temp\mydoc1.doc" from template (example mytempate.dot). This template contain a macro to insert a text into document.

It runs OK even there are some MSWord applications (instances) currently open unless "mydoc1.doc"

Please see these codes:

int ret = NO_ERR;
CString strMacroName;
CStringList argList;

strMacroName = _T("LC_WriteText");
argList.AddHead("This is a text");

ret = CallMacro(strMacroName,&argList);

........

int CExportMSWord::CallMacro(CString& strMacroName, CStringList* pArgList)
{
int bRetVal = NO_ERR;
HRESULT hr = S_OK;
ASSERT(m_pWrdDoc != NULL && m_pWrdDoc->m_lpDispatch != NULL);

OLECHAR FAR* strMacro = strMacroName.AllocSysString();
DISPID dispid;

// Error occurs here
hr = m_pWrdDoc->m_lpDispatch->GetIDsOfNames(IID_NULL, &strMacro, 1, LOCALE_SYSTEM_DEFAULT, &dispid);
SysFreeString(strMacro);
if (FAILED(hr))
bRetVal = UNABLE_CALL_MACRO;

//Some codes....

}

Now I create a new document (mydoc2.doc) from template.dot. Initialize MSWord OK! Create new document OK.

When there is a document which was created from mytemplate.dot (mydoc1.doc) currently open, after executing CallMacro, hr = DISP_E_UNKNOWNNAME!

But if I close "mydoc1.doc", execute again, CallMacro runs OK (hr = S_OK).

Could you tell me what problem and how to fix it??

Thanks in advance
Tuy Le

Re: Urgent! Problem with MSWord component!

Youknowme10-Dec-01 23:26

Youknowme

10-Dec-01 23:26

Hi,

I'm running on a project, which reuse MS Office component, too
In fact, I still don't understand your problem, but I let you know some issues I have faced Smile | :)

1. The Worf instance you automated will be the same with another instance user run after your application started up, and supprise, it will be visible on screen !!!
2. In fact, Office applications is buggy when you manipulate them via automation, one of the most nasty bug I've faced is it conflict with NAV 2k

Tien,

MFC DLL : linking error with message map

10-Dec-01 19:40

Hello,

I have a problem with DLL that I can't solve. I'm working on a quite important projects, with a lot of interfaces sharing several controls.
I want to make a DLL, Project_IHM.dll, containing common parts of the interface with a CGeneric_Dlg class, inherited from CDialog_Dlg in it.
This class is exported trhough the AFX_EXT_CLASS macro.
Then, in another DLL, I create classes inheriting from CGeneric_Dlg. Everything works perfectly, except the message map. If I use
BEGIN_MESSAGE_MAP(CMyDialog_Dlg, CGeneric_Dlg),
I got the following error
unresolved external symbol "protected: static struct AFX_MSGMAP const CGeoConcept_Dlg::messageMap" (?messageMap@CGeoConcept_Dlg@@1UAFX_MSGMAP@@B)
The only way I have found is to use
BEGIN_MESSAGE_MAP(CMyDialog_Dlg, CDialog_Dlg),
and add in the message map all the message that currently exists in CGeneric_Dlg.
It works, but it is not very nice.

How can I properly export the message map of my DLL?

Stephane David
CGx
Head of aeronautical department

Re: MFC DLL : linking error with message map

Steen Krogsgaard10-Dec-01 22:10

Steen Krogsgaard

10-Dec-01 22:10

If I understand your problem correct you have one MFC extension dll from which you export CGeneric_Dlg, and another MFC extension dll where you uose CGeneric_Dlg, right? If so, this will give you problems with AFX_EXT_CLASS. It will be evaluated to __declspec(dllexport) in both dlls, also the one where you want to import CGeneric_Dlg.

The standard solution is to use your own macro, like EXPORT_CGENERIC_DLG. Define it this way:

#if defined _COMPILING_PROJECT_IHM_DLL
#define EXPORT_CGENERIC_DLG __declspec(dllexport)
#else
#define EXPORT_CGENERIC_DLG __declspec(dllimport)
#endif

class EXPORT_CGENERIC_DLG CGeneric_Dlg : public CDialog_Dlg
{
// bla bla bla
}

Put _COMPILING_PROJECT_IMH_DLL as a defined symbol in the project settings of your Project_IMH.dll project, and *dont* put it in the dll that uses CGeneric_Dlg and you should be safe home!

Cheers
Steen.

"To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music"

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