Re: Application Type - DLL (Pt. 2) - C / C++ / MFC Discussion Boards

Re: Overriding Base Class Members

Stuart Dootson10-Mar-09 7:59

Stuart Dootson

10-Mar-09 7:59

ForNow wrote:
Is the only way to override members of a Base Class (and get to thier private members)

You can't get to a base class's private members from a derived class through overridden methods, whether they're virtual or not. A derived class can see public and protected members of its base class(es).

And you should also question why you're wanting to get at the base class's private members - either the base class is designed wrong or you're going the wrong way about things.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Overriding Base Class Members

ForNow10-Mar-09 12:34

ForNow

10-Mar-09 12:34

I am refering to the following Article wwww.codeproject.com/KB/threads/extended_thread.aspx

The Author is refering to A Contructer of CWinThread which is not documented in MSDN instead is in the thrdcore.h

In the artice he intilizes private memebers of CWinThead namely m_pThreadParams

m_pThreadParams = this;

class CWinThread : public CCmdTarget {
public:
CWinThread();
CWinThread(AFX_THREADPROC pfnThreadProc, LPVOID pParam); <---- Constructer

BOOL CreateThread(DWORD dwCreateFlags = 0, UINT nStackSize = 0,
LPSECURITY_ATTRIBUTES lpSecurityAttrs = NULL);

virtual BOOL InitInstance();
virtual int Run();
virtual BOOL PreTranslateMessage(MSG* pMsg);
virtual BOOL PumpMessage(); // low level message pump
virtual BOOL OnIdle(LONG lCount); //return TRUE if more idle processing
virtual BOOL IsIdleMessage(MSG* pMsg); //checks for special messages

private:
LPVOID m_pThreadParams; //generic parameters passed to starting function
AFX_THREADPROC m_pfnThreadProc;
HANDLE m_hThread; // this thread's HANDLE
}

Re: Overriding Base Class Members

Stuart Dootson10-Mar-09 12:48

Stuart Dootson

10-Mar-09 12:48

ForNow wrote:
The Author is refering to A Contructer of CWinThread which is not documented in MSDN instead is in the thrdcore.h

In the artice he intilizes private memebers of CWinThead namely m_pThreadParams

m_pThreadParams = this;

Well, see, here's the thing - m_pThreadParams is public (yes, PUBLIC) in the MFC I've got.

Have you got some counterfeit MFC or something?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Overriding Base Class Members

ForNow10-Mar-09 13:06

ForNow

10-Mar-09 13:06

I picked up the layout from a PPT presentation by Konstantin Bukin entitled more threads guess there is a lot of errorous documentation out there

Re: Overriding Base Class Members

Stuart Dootson10-Mar-09 13:28

Stuart Dootson

10-Mar-09 13:28

ForNow wrote:
I picked up the layout from a PPT presentation .. guess there is a lot of errorous documentation

Yeah, the code tends to be the most authoritative source.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Overriding Base Class Members

CPallini10-Mar-09 10:16

CPallini

10-Mar-09 10:16

It's the time to read some good C++ book.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Application Type - DLL (Pt. 2)

su_penguin10-Mar-09 5:58

su_penguin

10-Mar-09 5:58

Ok, so I've followed these steps to the T: http://www.microsoft.com/express/2005/platformsdk/default.aspx

I'm able to see the option to create the DLL, but after I start a new project and compile it, the project is unable to find the 'windows.h' file(s).

Am I not pointing the IDE to the right location?

Here's what I have for my VCProjectEngine.Dll.Express.Config file. The "Larrow" and "Rarrow" are the left and right braces around the XML tags:

Larrow ?xml version="1.0" encoding="utf-8"? Rarrow
Larrow VCPlatformConfigurationFile
Version="8.00"
Rarrow
Larrow Platform
Name="VCProjectEngine.dll"
Identifier="Win32"
Rarrow
Larrow Directories
Include="$(VCInstallDir)include;$(VCInstallDir)PlatformSDK\include;$(FrameworkSDKDir)include;$C:\Program Files\Microsoft SDKs\Windows\v6.1\Include"
Library="$(VCInstallDir)lib;$(VCInstallDir)PlatformSDK\lib;$(FrameworkSDKDir)lib;$(VSInstallDir);$(VSInstallDir)lib;$C:\Program Files\Microsoft SDKs\Windows\v6.1\Lib"
Path="$(VCInstallDir)bin;$(VCInstallDir)PlatformSDK\bin;$(VSInstallDir)Common7\Tools\bin;$(VSInstallDir)Common7\tools;$(VSInstallDir)Common7\ide;$(ProgramFiles)\HTML Help Workshop;$(FrameworkSDKDir)bin;$(FrameworkDir)$(FrameworkVersion);$(VSInstallDir);$(PATH);$C:\Program Files\Microsoft SDKs\Windows\v6.1\Bin"
Reference="$(FrameworkDir)$(FrameworkVersion)"
Source="$(VCInstallDir)crt\src"
/Rarrow
Larrow /Platform Rarrow
Larrow /VCPlatformConfigurationFile Rarrow

Anything wrong here? Maybe another step not being followed correctly?

Thanks

Re: Application Type - DLL (Pt. 2)

Stuart Dootson10-Mar-09 6:25

Stuart Dootson

10-Mar-09 6:25

windows.h will be in the Windows SDK include folder, which is the "$C:\Program Files\Microsoft SDKs\Windows\v6.1\Include" part of the include path.

Is the $ sign really in that bit of the include path, 'cause it looks wrong to me. If that solves your problem, then you'll also want to remove the $ signs in the equivalent parts of the Library and Path environment variables.

Also - does that folder (C:\Program Files\Microsoft SDKs\Windows\v6.1\Include) actually exist?

BTW - my install of VS2005 has $(VCInstallDir)PlatformSDK\include - I guess you've installed a new Platfrom SDK version and asked it to integrate with Visual Studio?

Re: Application Type - DLL (Pt. 2)

su_penguin10-Mar-09 6:33

su_penguin

10-Mar-09 6:33

Cool! I've removed the dollar signs.

Thank You!

WS_EX_CONTROLPARENT and freeze

BadJerry10-Mar-09 5:34

BadJerry

10-Mar-09 5:34

Hello all,

I have a derived CWnd control which I use as a container. I want the user to tab between child controls therefore I am setting the WS_EX_CONTROLPARENT. If I do that set, the application freezes as soon as the application loses focus... any idea why?

Thanks in advance!

Jerry

Re: WS_EX_CONTROLPARENT and freeze

BadJerry10-Mar-09 5:44

BadJerry

10-Mar-09 5:44

Found it!

For future reference: http://support.microsoft.com/kb/149501[^]

Configuration properites of IIS.

mmayur10-Mar-09 4:32

mmayur

10-Mar-09 4:32

Hi,

Any API's in C++ or VC++ that will help me to fetch the configuration properties of the IIS. I'm looking for fetching the Root path and the Virtual directory path information.

Regards,

Mayur M

Re: Configuration properites of IIS.

led mike10-Mar-09 4:42

led mike

10-Mar-09 4:42

mayur8u wrote:
the configuration properties of the IIS

"the IIS"? Really? There's only one installation of IIS in the entire universe? I'm pretty sure I have more than one right here in my own office, let me check... yes indeed I have two right here. Well given that reality I suppose we need some slightly more specific information from you in order to help. For the moment we will pretend that you not already realizing this, is a sign that you are attempting something beyond your current knowledge base. But hey, that never stops any of the hundreds of others we see copy/pasting their way around the internet.

Re: Configuration properites of IIS.

Iain Clarke, Warrior Programmer10-Mar-09 5:49

Iain Clarke, Warrior Programmer

10-Mar-09 5:49

Having a rough day, Mike?

Rose | [Rose]

and / or

Iain.

Codeproject MVP for C++, I can't believe it's for my lounge posts...

Re: Configuration properites of IIS.

led mike10-Mar-09 7:18

led mike

10-Mar-09 7:18

Hey a rose beer, I never had one yet! Big Grin | :-D

I'll have to get me one[^] now. Wink | ;)

Problem with CString

Abhijit Jana10-Mar-09 4:15

Abhijit Jana

10-Mar-09 4:15

Hi Guys,
I need some helps,

I have a variable ver of Cstring Type
CString ver;
how would I print this ? and I want to compare it with a string with wchar_t*, its some think like
wchar_t* ver2;
can any body please suggest me how to do this. May be this is a silly question but I don't have much idea on CPP. Frown | :(

cheers,
Abhijit
CodeProject MVP

Re: Problem with CString

David Crow10-Mar-09 4:20

David Crow

10-Mar-09 4:20

Abhijit Jana wrote:
I have a variable ver of Cstring Type
CString ver;
how would I print this ?

cout << ver;

Abhijit Jana wrote:
and I want to compare it with a string with wchar_t*, its some think like
wchar_t* ver2;

Have you tried:

if (ver == ver2)
    ...

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: Problem with CString

Abhijit Jana10-Mar-09 5:55

Abhijit Jana

10-Mar-09 5:55

David, Thanks for response. I found the problem. This C++ Exe is used to call my .net web service from client machine. So it was quite difficult to debug. But finally I have found the problem, it was with some return value. and solved . Wink | ;)

Again thanks.

cheers,
Abhijit
CodeProject MVP

Re: Problem with CString

safemj11-Mar-09 0:15

safemj

11-Mar-09 0:15

CString defined lots of constructors such as CString(LPCWSTR lpsz) & CString(LPCWSTR lpch, int nLength);

CString ver;
wchar_t* ver2;
...
CString ver3(ver2);
if(ver==ver3){
...
}else{
...
}

Custom listcontrol

toolsrnd10-Mar-09 4:14

toolsrnd

10-Mar-09 4:14

May i know how can i create a custom list control........

Re: Custom listcontrol

Code-o-mat10-Mar-09 4:24

Code-o-mat

10-Mar-09 4:24

You should ask a bit more precisely...give some more details about what you want to do.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Custom listcontrol

David Crow10-Mar-09 4:25

David Crow

10-Mar-09 4:25

Are you referring to the LVS_OWNERDRAWFIXED style?

Re: Custom listcontrol

Hamid_RT10-Mar-09 5:02

Hamid_RT

10-Mar-09 5:02

Yes [^].

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Implementing queues along with threads

kr_ash10-Mar-09 3:21

kr_ash

10-Mar-09 3:21

Hi all,
my requirement is there is a function which creates one thread and passes the data for further processing which looks like
void MyFunc(char *data)
{
CreateThread(NULL,0,build_data,(void *)data,0,NULL);
}
Now i want to modify the above code.
I want to introduce a queue class and want to create two threads so that 1st thread can invoke a function which writes the data to the queue and the 2nd thread reads the data from the queue. Please introduce mutex if required. Can you tell me how to implement the above in VC++.
Please help me on the above. Thanks

Re: Implementing queues along with threads

David Crow10-Mar-09 3:59

David Crow

10-Mar-09 3:59

kr_ash wrote:
...1st thread can invoke a function which writes the data to the queue and the 2nd thread reads the data from the queue.

This sounds a bit like the producer/consumer problem.

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