C / C++ / MFC

prasad_som10-Sep-06 22:39

10-Sep-06 22:39

tasleem143 wrote:
(HCRET)GetProcAddress(hDLL, "DllUnRegisterServer");
if(lpfnDllUnRegisterServer == NULL)
{//shows this message.

this means that function is not present in your dll. Is it?

Prasad
Notifier using ATL

_tasleem11-Sep-06 0:16

_tasleem

11-Sep-06 0:16

(HCRET)GetProcAddress(hDLL, "DllUnregisterServer");
if(lpfnDllUnRegisterServer == NULL)
{//shows this message.
i had tried this and worked fine,replaced the capital 'R' with 'r' and worked thanks for ur time.

Tasleem Arif

Paul M Watt11-Sep-06 6:23

Paul M Watt

11-Sep-06 6:23

The unregister functions name is this: DllUnregisterServer, with a lowercase R in unregister.

You typed it like this:

DllUnRegisterServer with a capital R.

Good luck

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Socket Programming - no event raised

_tasleem12-Sep-06 18:48

_tasleem

12-Sep-06 18:48

thanks it did work 4 me.

Tasleem Arif

Ranjan Shrestha10-Sep-06 19:14

Ranjan Shrestha

10-Sep-06 19:14

I am not receiving 'OnReceive' event on receiving data from the network. It seems the library didn't get the frame. I saw the frame on the protocol analyzer but did not get any 'OnReceive' event on the socket. I even checked with synchronous socket (CSocket) but could not receive a single byte. This problem however doesn't always appear. Sometimes it is working and sometimes it is not. What might be the reason for such random behaviour ?

Re: Socket Programming - no event raised

Moak4-Oct-06 4:57

Moak

4-Oct-06 4:57

suprising behavour.

CSizingControlBar

rcao10-Sep-06 19:00

rcao

10-Sep-06 19:00

when i use CSizingControlBar,i make the bar floating.
i find the size of bar is same when the bar from dock to floating state.
i want change the size,but i don't know how to do?

Re: CSizingControlBar

rcao10-Sep-06 20:47

rcao

10-Sep-06 20:47

i find how to do that.
when init,modify the size.

Problem overriding operator new [modified]

JKallen10-Sep-06 15:46

JKallen

10-Sep-06 15:46

I am over-riding operator new []. I am getting the following error....
c:\Visual Studio Projects\JLib\main.cpp(149): error C2661: 'Object<T>::operator new[]' : no overloaded function takes 3 arguments

The following code results in the above comilation error.

Object<double>* objects;
objects = new Object<double>[5]; // <- error occurrs here
delete [] objects;

If anyone knows what is going on I would very much appreciate an explanation.

Here is the relevant declarations and definitions...

#pragma once
#include <new>

using namespace std;

template <typename T> class Object{
public:
//CONSTRUCTORS ETC ETC ETC

void* operator new[](size_t size) throw(bad_alloc);
void* operator new[](size_t size,const nothrow_t&) throw();
void operator delete[](void* ptr) throw();
void operator delete[](void* ptr,const nothrow_t&) throw();

//OTHER STUF

};

template <typename T> void* Object<T>::operator new[](size_t size) throw(bad_alloc){
Object<T>* data = 0;
if ( (data = ::operator new[](size){
//ommitted for brevity
}
return data;
}

template <typename T> void* Object<T>::operator new[](size_t size,const nothrow_t&) throw(){
Object<T>* data = 0;
if ( (data = ::operator new[](size,const nothrow_t&)) ){
//ommitted for brevity
}
return data;
}

template <typename T> void Object<T>::operator delete[](void* ptr) throw(){
::operator delete [] (ptr);
ptr = 0;
}

template <typename T> void Object<T>::operator delete[](void* ptr,const nothrow_t&) throw(){
::operator delete [] (ptr,const nothrow_t&);
ptr = 0;
}

Rinu_Raj10-Sep-06 17:55

Rinu_Raj

10-Sep-06 17:55

You may use
void* operator new(size_t size) throw(bad_alloc);
instead
void* operator new[](size_t size) throw(bad_alloc);
wer ever it is used so ....

RinuRaj

JKallen10-Sep-06 18:33

JKallen

10-Sep-06 18:33

I need to define an implementatino of the [] version because the instances of Object<t> have data regarding adjacent instantiations when created via new [] . At least logically they do, so it makes sense to set those relationships in the new construction.

Re: Problem overriding operator new [modified]

Rinu_Raj10-Sep-06 18:37

Rinu_Raj

10-Sep-06 18:37

You may check this link ,

http://www.relisoft.com/book/tech/9new.html

This may help you

RinuRaj

prasad_som10-Sep-06 22:56

10-Sep-06 22:56

Can you help reproducing this error ?
I tried this way.

template <typename T> class A
{
public:
	void* operator new[](size_t t) throw();
};
template <typename T>void* A<T>::operator new[](size_t t) throw()
	{
		return NULL;//just doing nothing
	}

int main(int argc, char* argv[])
{

	A<double>* objects;
    objects = new A<double> [5];      delete [] objects;
	return 0;
}

But no error occurs.

-- modified at 1:38 Tuesday 12th September, 2006

Prasad
Notifier using ATL

JKallen11-Sep-06 6:55

JKallen

11-Sep-06 6:55

The only difference between your use of the new operator and mine (using your class) is...

Your version:

A* objects;
objects = new A [5];
delete [] objects;
return 0;

My version:

A<double>* objects;
objects = new A<double> [5];
delete [] objects;
return 0;

I dont understand how your code can work without the template type being defined.

prasad_som11-Sep-06 19:48

11-Sep-06 19:48

JKallen wrote:
Your version:

A* objects;
objects = new A [5];
delete [] objects;
return 0;

Actually, I added < and > there,but suppressed due to html formatting(In all other places I used "andlt and andgt" . I modified it now.
And its working fine. Am I missing something?

Prasad
Notifier using ATL

PropertyPages and data

Mark F.10-Sep-06 14:43

Mark F.

10-Sep-06 14:43

Platform: WinXP, Visual Studio 6

I have a wizard that I created with a propertysheet and 3 propertypages. All have about a half-dozen controls for gathering data. The problem is I don't know how to store the data variables from one page to the next so that at the last page I can use it other than writing it to a file when next button fires.

Thanks!

"Complexity breeds problems. Keep it simple." - Mark

benben10-Sep-06 17:45

benben

10-Sep-06 17:45

How about storing the data to the global variables? Smile | :)

Benben

Renjith Ramachandran10-Sep-06 18:12

Renjith Ramachandran

10-Sep-06 18:12

keep your data in a structure/class, and pass the reference to the each pages. in case of any validation, do it in corresponding page. gotcha? Smile | :)

['Loka Samastha Sukhino Bhavanthu' - May all beings be happy and free]

prasad_som10-Sep-06 23:35

10-Sep-06 23:35

Mark F. wrote:
The problem is I don't know how to store the data variables from one page to the next so that at the last page I can use it other than writing it to a file when next button fires.

Use variables for storing each control value, in respective propertypage class.Validate its values when user press next button.
In last page, you can use this code.

CPropertySheet *pSheet=GetParent();
CPropertPage* pPage1=pSheet->GetPage(1);
pPage1->Aceess variables;//access values
CPropertPage* pPage2=pSheet->GetPage(2);
pPage2->Aceess variables;//access values

Prasad
Notifier using ATL

David Crow11-Sep-06 3:59

David Crow

11-Sep-06 3:59

The common link between all of the pages is the sheet. Store the data there.

"Talent without discipline is like an octopus on roller skates. There's plenty of movement, but you never know if it's going to be forward, backwards, or sideways." - H. Jackson Brown, Jr.

"Judge not by the eye but by the heart." - Native American Proverb

Mark F.14-Sep-06 12:02

Mark F.

14-Sep-06 12:02

Thanks to all. I worked it out!

"Complexity breeds problems. Keep it simple." - Mark