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again if it is the recordset and specialy the MoveNext part you could do the following:
make sure you don't collect record by record. Normaly a movenext requests only the next item from the server meaning just on record per fetch(data receivig)
you can retrieve multilple records in a single fetch.
Check the following Fetching Records in Bulk[^] for more details.
codito ergo sum
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how ? please help me with an example !
Bravoone
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Please help me because i dont understand how can i implement this !?
Bravoone
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How can i do this with my code ?
void CDatabase_Note::DoBulkFieldExchange( CFieldExchange* pFX )
{
// call the Bulk RFX functions
// for field data members
pFX->SetFieldType( CFieldExchange::outputColumn );
RFX_Text_Bulk( pFX, _T( "[debit]" ), &m_debit, &m_credit, 30 );
}
i have a error cannot convert from CString to char
please someoane help me ?!!!!
Bravoone
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Its a suggestion if we suppose that you have 1000 records in your database and now you want to read their you can break their to 1000/5=200 and then create 5 thread in each thread you insert a loop for read of database in last thread on the loop you use from while (!pPlan->IsEOF() )i think its good than to use a loop for read 1000 records on runtime
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hi i want to unregister the COM dll through code i had registered it through code and it works fine.
Tasleem Arif
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Load your DLL that you want to unregister, and call the "DllUnregisterServer" function of that DLL. Alternatively, you should be calling "DllRegisterServer" to register your COM dlls.
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!
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HINSTANCE hDLL = LoadLibrary("C:\\BhoNew.dll");<br />
if(hDLL == NULL)<br />
{<br />
AfxMessageBox("DLL can not be loaded..\r\nReason could ");<br />
}<br />
<br />
typedef HRESULT (CALLBACK *HCRET)(void);<br />
HCRET lpfnDllUnRegisterServer;<br />
lpfnDllUnRegisterServer = <br />
(HCRET)GetProcAddress(hDLL, "DllUnRegisterServer");<br />
if(lpfnDllUnRegisterServer == NULL)<br />
{
AfxMessageBox("DLL Entrypoint for function DLLUnRegisterServer could) ;<br />
}
but it gives the messabox above.
i had used this code to register it.
HINSTANCE hDLL = LoadLibrary("C:\\BhoNew.dll");<br />
if(hDLL == NULL)<br />
{<br />
AfxMessageBox("DLL can not be loaded..\r\nReason could ");<br />
}<br />
typedef HRESULT (CALLBACK *HCRET)(void);<br />
HCRET lpfnDllRegisterServer;<br />
lpfnDllRegisterServer = <br />
(HCRET)GetProcAddress(hDLL, "DllRegisterServer");<br />
if(lpfnDllRegisterServer == NULL)<br />
{<br />
AfxMessageBox("DLL Entrypoint for function DLLRegisterServer could not be found..");<br />
}
and it registeed that and worked but problem with unregistering,
Tasleem Arif
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tasleem143 wrote: (HCRET)GetProcAddress(hDLL, "DllUnRegisterServer");
if(lpfnDllUnRegisterServer == NULL)
{//shows this message.
this means that function is not present in your dll. Is it?
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(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
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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!
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thanks it did work 4 me.
Tasleem Arif
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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 ?
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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?
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i find how to do that.
when init,modify the size.
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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;
}
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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
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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.
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You may check this link ,
http://www.relisoft.com/book/tech/9new.html
This may help you
RinuRaj
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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;
}
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
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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.
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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?
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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
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How about storing the data to the global variables?
Benben
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