C / C++ / MFC

14-Sep-09 23:49

VVVimal wrote:
Is this a good approach
t1==t2

Depends on your needs (i.e. be specific!).
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]

Re: SYSTEMTIME

Randor 15-Sep-09 1:36

Randor

15-Sep-09 1:36

VVVimal wrote:
Is this a good approach

No, that will not even compile. I would recommend converting to FILETIME structure with the SystemTimeToFileTime Function[^] and then to ULARGE_INTEGER Union[^] and compare the QuadPart.

Best Wishes,
-David Delaune

Showing Error [modified]

Game-point14-Sep-09 22:42

Game-point

14-Sep-09 22:42

    CImage image;
image.Load (_T(read.tif"));
   //x1 = 8108, y1 =68 , x2 = 8116,y2 = 82
CRect rect(x1,y1,x2,y2);
CDC *pDC=CDC::FromHandle(image.GetDC());
pDC->Draw3dRect(rect,RGB(255, 0, 0), RGB(0, 255, 0));
image.Save(_T("D:/2009ga.jpg"));

when i try to draw the rectangle in image ...
showing error msg like Expression : m_hDC == 0..but not drwing the rectangle in image..why Confused | :confused:

~~~~~~~~~~~~~Raju~~~~~~~~~~~~~

modified on Tuesday, September 15, 2009 4:49 AM

Re: Showing Error

CPallini14-Sep-09 22:59

14-Sep-09 22:59

Why don't you have a look at the SimpleImage [^] sample code?
Alternatively: why don't you use a debugger?
Smile | :)

Re: Showing Error

Game-point14-Sep-09 23:20

Game-point

14-Sep-09 23:20

thanks ..i hope it ll help me ...

how to debugger in Visual studio ..already i am working in C# .net ....i think its same procedure ...?

~~~~~~~~~~~~~Raju~~~~~~~~~~~~~

Re: Showing Error

CPallini14-Sep-09 23:43

dynamically create controls on dialog box

14-Sep-09 23:43

The following code snippet (inside the OnPaint handler) works on my system:

CPaintDC dc(this); // device context for painting
CImage img;
img.Load(_T("foo.jpg"));
CDC * pdc = CDC::FromHandle( img.GetDC() );
CRect rc(0,0,100,100);
pdc->Draw3dRect(&rc, RGB(0,255,0), RGB(255,0,0));
dc.BitBlt(0,0, 400, 400, pdc, 0, 0, SRCCOPY);
img.ReleaseDC();

(Consider it as it si, just a silly example: for instance reloading the image at every OnPaint call is foolish).

sunnyram14-Sep-09 22:12

sunnyram

14-Sep-09 22:12

I want to dynamically create the controls on dialog box.

this dialog box may contain multiple list controls, check boxes, radio buttons, drop down boxes etc.

number of each controls depend on the some condition.

so can we do this if yes, how do i do this?

how do i handle the events related to the controls?

sunnyram

CPallini14-Sep-09 22:39

14-Sep-09 22:39

sunnyram wrote:
so can we do this if yes, how do i do this?

Yes, of course. You've to use, for instance, CreateWindowEx [^] function.

sunnyram wrote:
how do i handle the events related to the controls?

MSDN has a lot of examples about, see, for instance, the Using Buttons [^] topic.
Smile | :)

sunnyram16-Sep-09 22:37

sunnyram

16-Sep-09 22:37

Thanks, i will try suggested thing.

sunnyram

David Crow15-Sep-09 2:54

David Crow

15-Sep-09 2:54

If it's only a handful, why not create them all at design time, and then show/hide them accordingly (ie, some condition)? Much, much easier than creating them at runtime.

"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

Ativirus-Firewall is blocking a needed global hook!

sunnyram16-Sep-09 22:39

sunnyram

16-Sep-09 22:39

As it is a requirement we can not do this.

sunnyram

Russell^'14-Sep-09 22:09

Russell^'

14-Sep-09 22:09

My program crashes on a client's pc (with XP) on this 3 lines (on any other pc it correcly runs):

m_pMainWnd->ShowWindow(SW_SHOWMAXIMIZED);        //Wanted a maximed window
m_pMainWnd->SetForegroundWindow();               //Set this window on the top of the others
m_pMainWnd->UpdateWindow();

They are default instruction in the initialization function (InitInstance) of a MFC program.

My antivirus (COMODO) tells a warning on UpdateWindow because when run trys to install a global hook on "atioglxx.dll" (It looks a dll from my ATI video board). If I do not permit this the program stops, else runs perfectly.

I'm quite sure that some setting of the antivirus of the client is locking this function! Or that his video-board isn't so compatible with this function.

Why this hook? Is it important? can I avoid this to let the program run on every pc?

Any other solution?

Of course there is the easy way (but not the real solution) to tell to the user to disable the antivirus (I think it is Norton)

Thanks

Russell

Re: Ativirus-Firewall is blocking a needed global hook!

David Crow15-Sep-09 2:56

David Crow

15-Sep-09 2:56

Russell' wrote:
Is it important? can I avoid this to let the program run on every pc?

Have you tried?

pRecordset GetItem

MsmVc14-Sep-09 21:38

MsmVc

14-Sep-09 21:38

Hi All
I am try to get values from Mysql database.I am using pRecordset class for get data from Mysql.But it's generate error while the data type is Decimal.

strContent = (char *) (_bstr_t) pRecordset->Fields->GetItem((_bstr_t)"Price")->Value;
Table is 

create table test(A TINYINT(100), B SMALLINT(100), C MEDIUMINT(100), D INT(100), E BIGINT(100), F FLOAT(100,10),
 G DOUBLE(100,10), H DECIMAL(65,20));

insert into test(A,B,C,D,E,F,G,H)values(65,645,365,31311,87655498,46546547.650909090,475735375734573.0000,5323423424.00004343434300000);

Re: pRecordset GetItem

MsmVc14-Sep-09 22:28

MsmVc

14-Sep-09 22:28

Error is
IDispatch error #3105
Plz help me

Re: pRecordset GetItem

David Crow15-Sep-09 3:01

David Crow

15-Sep-09 3:01

Have you tried:

A)

create table test(A TINYINT(100), B SMALLINT(100), C MEDIUMINT(100), D INT(100), E BIGINT(100), F FLOAT(100,10), G DOUBLE(100,10), H DOUBLE(65,20));
insert into test(A,B,C,D,E,F,G,H)values(65,645,365,31311,87655498,46546547.650909090,475735375734573.0000,5323423424.00004343434300000);

B)

create table test(A TINYINT(100), B SMALLINT(100), C MEDIUMINT(100), D INT(100), E BIGINT(100), F FLOAT(100,10), G DOUBLE(100,10), H DECIMAL(65,20));
insert into test(A,B,C,D,E,F,G,H)values(65,645,365,31311,87655498,46546547.650909090,475735375734573.0000,5.5);

Basics C++

john563214-Sep-09 21:09

john5632

14-Sep-09 21:09

Hi Experts,

When I declare a Object of the class, How it store into memory i.e which memory segment it used?

Richard MacCutchan14-Sep-09 21:32

Richard MacCutchan

14-Sep-09 21:32

MPTP wrote:
which memory segment it used?

I presume you are trying to distinguish whether it is stored on the heap or the stack. If you create an object via new() then it goes to the heap. If it is a local variable it goes on the stack.

CPallini14-Sep-09 21:37

14-Sep-09 21:37

MPTP wrote:
memory segment

Do you want to know if an instance of a class is stack or heap allocated?
Smile | :)

_AnsHUMAN_ 14-Sep-09 21:50

_AnsHUMAN_

14-Sep-09 21:50

If you have created the object like. Myclass m;
the object is stored on the stack
if you have done-- Myclass* m = new Myclass();
the memory is allocated from the heap.

You need to google first, if you have "It's urgent please" mentioned in your question.
Wink | ;-)

_AnShUmAn_

KarstenK14-Sep-09 21:54

KarstenK

14-Sep-09 21:54

the runtime takes care which memory is used. Every time a object is created some memory will be used. You can get the information about that getting the address of of the object.

In C++ you 3 ways to create objects

Sample code:

void sampleFunc()
{
   Object obj1;//Stacke with automatic destruction

   Object *addrObj = &obj1;//getting the address of memory

   //do not
   //delete addrObj;//Bug

   Object *pObj = new Object();//Heap and manuell destrucion needed!!!

   delete pObj;// to avoid memory leak;
}

Press F1 for help or google it.
Greetings from Germany