Auto completion not works? - ATL / WTL / STL Discussion Boards

bryces26-Nov-03 20:05

26-Nov-03 20:05

Hi All,

I was wondering if anyone has done any development in WTL with the CCheckListBox? I have a ListBox but want to give the functionality (and feedback to user) that they have selected multiple items.

I have tried using the macro's described in MSDN but have had no luck.

ListView_SetExtendedListViewStyle(this->m_ipCheckList.m_hWnd, LVS_EX_CHECKBOXES);

When I mean no luck, I mean that the above call has no effect on my ListBox (no check box appears next to it).

Any thoughts on what I would have to do to get something like the above going?

thanks
Bryce

Re: CCheckListBox and CListBoxImpl

coge26-Nov-03 22:13

coge

26-Nov-03 22:13

A listbox and listview
are two different controls. Your code will work for a list view
as long as its in report mode but will not for a listbox.
This works in some code I'm currently using for a ListView.

ClistViewControl m_listView
m_listView.Attach( GetDlgItem( IDC_LIST_STATION_DATA) );

m_listView.SetExtendedListViewStyle( LVS_EX_CHECKBOXES | LVS_EX_FULLROWSELECT);

Correct me if I am wrong but the CCheckListBox is a mfc construct not
wtl. The following url explains how to use it
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmfc98/html/_mfc_cchecklistbox.asp

Hope this helps

Re: CCheckListBox and CListBoxImpl

bryces26-Nov-03 22:36

bryces

26-Nov-03 22:36

Hi,

Thanks for your reply.

I thought there may have been another version of the CheckListBox for WTL... oh well...

How have you defined what your ClistViewControl object is?

The supplied code will not compile as there is no definition of ClistViewControl.

I tried to convert it to CListViewControlImpl m_ListView;

with below in stdafx.h

<br />
class CListViewControlImpl : public CWindowImpl<CListViewControlImpl, ClistViewControl><br />
    { DECLARE_EMPTY_MSG_MAP(); };<br />

Can you please supply your definition on your ClistViewControl.

Thanks
Bryce

Re: CCheckListBox and CListBoxImpl

coge26-Nov-03 23:49

coge

26-Nov-03 23:49

Hi, Im using WTL version 7. In order to use the control wrapper
just add
#include <atlctrls.h> to your stdafx.h.

then you can declare CListViewCtrl m_listView;
and use it accordingly

If your still having problems i can send you a sample app.

Hope this helps Smile | :)

edit:
whoops the <> were lost in html.

Re: CCheckListBox and CListBoxImpl

bryces27-Nov-03 1:27

bryces

27-Nov-03 1:27

Thanks for your help.

I can get it to compile now!

I did change it a little bit so that DDX can work.

in stdafx.h define like below

<br />
class CListViewCtrlImpl : public CWindowImpl<CListViewCtrlImpl, CListViewCtrl><br />
    { DECLARE_EMPTY_MSG_MAP(); };<br />

then in your class you use CListViewCtrlImpl instead of CListViewCtrl.

What method did you use to add elements to the List?

I simple demo app would be handy. please send thanks

cheers
Bryce

Re: CCheckListBox and CListBoxImpl

coge27-Nov-03 9:59

coge

27-Nov-03 9:59

I sent you a sample app with adding of elements. Let
me know if this is what you needed.

Thanks,
Clay

Re: CCheckListBox and CListBoxImpl

Michael Dunn27-Nov-03 7:19

Michael Dunn

27-Nov-03 7:19

A list box and list view control are different things. The list view has checkbox support built-in. If you want checks in a list box, you'll need to write it yourself (CCheckListBox is an MFC class, I suppose you could take that code and port it to WTL).
WTL has CCheckListViewCtrl that wraps a list view with checkboxes. Look in atlctrlx.h for its definition.

--Mike--
Ericahist | CP SearchBar v2.0.2 | Homepage | RightClick-Encrypt | 1ClickPicGrabber
There is a saying in statistics that a million monkeys pounding on typewriters would eventually create a work of Shakespeare. Thanks to the Internet, we now know that this is not true.

Auto completion not works?

M.Khadem25-Nov-03 22:50

M.Khadem

25-Nov-03 22:50

hi please guide me in my problem.
when I use then generated code in VC6 in a WTL program,
Paint event is like this:

<br />
OnPaint(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)<br />
{<br />
CPaintDC dc(m_hWnd);<br />
<br />
    return 0;<br />
}<br />

but when i use dc. IDE dosen't show me AutoComplation Pop-up.
I need to know the reason.

oh, i know some ways to solve:
we can use something like this
CPaintDC dc=CPaintDC(m_hWnd);

but why the IDE have troble with first one? Blush | :O

STL deque problem

Bash21-Nov-03 3:12

Bash

21-Nov-03 3:12

Hi,

I'm novice in STL C++ librari, so my question will be very easy.

I have a structure, for example:

typedef struct _mystruct
{
char name[256];
bool sex;
int age;
} mystruct, *pmystruct;

I can define a class based on queue STL template:

typedef queue<mystruct, list<mystruct=""> > MEMBERS_QUEUE; // This works perfectly

But I want also define a class based on deque:

typedef deque<mystruct, list<mystruct=""> > MEMBERS_DEQUE; // This doesn't work.

I suspect that I must define allocator for mystruct... What should I do to construct own class based on deque and mystruct?

Yours sincerely,
Alex Bash

Re: STL deque problem

Roger Stewart21-Nov-03 7:03

Roger Stewart

21-Nov-03 7:03

Did you forget to include the deque header file?

#include <queue>
#include <deque>

using namespace std ;
...
// Using queue with deque
typedef deque<mystruct> MEMBERS_DEQUE;
typedef queue<mystruct> MEMBERS_QUEUE;

Roger Stewart
"I Owe, I Owe, it's off to work I go..."

STL set.h Performance Analysis

BrianReeve20-Nov-03 15:35

BrianReeve

20-Nov-03 15:35

I am looking how to measure the performance of the set.h file in the Standard Template Library. This is for a homework assignment. We are required to modify the set.h file with global integer variables to do the following:

I need to know how to count the number of compares and data moves that take place when loading N number of strings into a set or multiset. I tried to open up the set.h and increment counters in a few places, but I have no idea which functions do what. The set.h file is very confusing to me.

Any help is appreciated.

Re: STL set.h Performance Analysis

Stefan Pedersen20-Nov-03 15:52

Stefan Pedersen

20-Nov-03 15:52

Why not use the contained object instead?
Just overload constructors and the relevant operators.

And if the paths that I have followed/have tread against the flow/there is no need for sorrow
I am coming home
Return, Crüxshadows

Re: STL set.h Performance Analysis

Andreas Saurwein20-Nov-03 15:58

Andreas Saurwein

20-Nov-03 15:58

As they always say "kids, dont try this at home".

Or better, dont try this with the set which shipped with VC6.

Take the STLport (stlport.org[^]), its much more readable and is still a compatible implementation.

Finally moved to Brazil

Re: STL set.h Performance Analysis

BrianReeve21-Nov-03 9:38

BrianReeve

21-Nov-03 9:38

I wasn't modifying the original set.h file. I made a copy an placed it in my project file. I simply linked to it absolutely.

Thanks for the other resource tho! Is there a set.h (or similar header file) included in that implimentation?

If it is more readable, it will definitely help.

Thanks,

Brian

Re: STL set.h Performance Analysis

Andreas Saurwein21-Nov-03 11:20

Andreas Saurwein

21-Nov-03 11:20

BrianReeve wrote:
I wasn't modifying the original set.h file

Actually I was referring to trying to understand not to modifying the file.

BrianReeve wrote:
Is there a set.h (or similar header file) included in that implimentation?

You bet there is: <set>

Finally moved to Brazil

Re: STL set.h Performance Analysis

Joaquín M López Muñoz22-Nov-03 8:18

Joaquín M López Muñoz

22-Nov-03 8:18

You can get these estimates without modifying the source code of std::set. In order to count copying and compare operations, enrich the class you're using as element in the set like follows:

class element_set
{
public:
  static unsigned no_of_copying_ops;
  static unsigned no_of_compare_ops;
 
  element_set(const element_set& x)
  {
    ++unsigned no_of_copying_ops;
    ...
  }

  bool operator<(const element_set& x)const
  {
    ++no_of_compare_ops;
    ...
  }

  ...
};
 

unsigned element_set::no_of_copying_ops=0;
unsigned element_set::no_of_compare_ops=0;

Hope this helps, good luck.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Return value from ATL method to JavaScript variable

SlavaFromUkraine20-Nov-03 1:50

SlavaFromUkraine

20-Nov-03 1:50

Hello

I have an ATL object which I call in my JavaScript block on the page. I can pass values to methods of object by I don't know how to modify values.

I need to modify Number variable and String from the method:

This is a method of my object:

STDMETHODIMP CRsaSign::Test(int* pLen,BSTR* pStr)
{
*pLen = 1;
return S_OK;
}
[id(28), helpstring("method Test")] HRESULT Test([in,out]int* pLen,[out]BSTR* pStr);

Here is my script block:

function GenerateKey()
{
var Signature = new String(128);
var SignatureLen = new Number(54321);
objSign.Test(SignatureLen,Signature);
alert(SignatureLen);
}

In debugger I can see value *pLen = 54321 but after
I assign it 1 I see message box with previous 54321.

Maybe someone knows where to read about it or an answer Smile | :)

Thanks

Vladislav

Re: Return value from ATL method to JavaScript variable

Stefan Pedersen20-Nov-03 15:54

Stefan Pedersen

20-Nov-03 15:54

Javascript doesn't support [in, out] parameters.
If you are unable to use [retval] you are out of luck...

And if the paths that I have followed/have tread against the flow/there is no need for sorrow
I am coming home
Return, Crüxshadows

Re: Return value from ATL method to JavaScript variable

SlavaFromUkraine20-Nov-03 19:53

SlavaFromUkraine

20-Nov-03 19:53

Hi
Thanks for answer.
I used retval - it works.

Slava

Derive or include member var?

GDavy19-Nov-03 20:23

GDavy

19-Nov-03 20:23

Hi guys,

Ok this is the dilemma I^m facing right now:
I`ve got this template class in which I want to have a static member variable which is shared by all objects of that class no matter what the template parameters were. So I figured I need to create a dummy class with that static parameter and use that.
The way in which to use that now is the question there are 2 options (as far as I can see).
1) I derive the template class from that dummy class
2) I put a member var of that dummy class in the template class.
eg:
class CDummy
{
static int m_nAnInteger;
};
//option nr 1
template<class TParam> class CATemplate: public TParam, public CDummy
{
...
};
//option nr 2
template<class TParam> class CATemplate: public TParam
{
CDummy theDummyObj;
...
};

In the one case I can refer to m_nAnInteger dircty in the other I have to refer to it through the object. In the one case I am dealing with multiple inheretance however and in the other not. So if anybody can tell me which would be the best solution feel free.

Greetz,
Davy

Re: Derive or include member var?

berndg19-Nov-03 22:15

berndg

19-Nov-03 22:15

I'm not normally a great friend of the is_a vs. has_a terminology, but here I find it works and provides good guideance:

Is CATemplate a CDummy? No, it has a CDummy. Thus, composition (your option nr 2) is the answer.

Bernd

Toolbar for IE

okinawascubadiver19-Nov-03 13:49

okinawascubadiver

19-Nov-03 13:49

I am trying to figure out a way to create a simple toolbar for IE, or MOZILLA or both..

All I am looking for is to hyperlink to 2 different websites. I am trying to get 2 Main headings for each site, and a drop down list under each for different pages on that site, can anyone help, I am a 26 y/o NEWBEE to programming.

I am hoping to get it too look like this:

Main Topics as if this was the toolbar and drop down menus

CSRA Light Flyers Trenton Flyers
Home Home
Pictures News
News Pictures

Thanks!!

Eric Marenyi

ATL7.0 and Error Handling

arun140519-Nov-03 5:28

arun1405

19-Nov-03 5:28

Hi All,

Does anyone has any idea if ATL7.0 has introduced some better ways of handling errors in COM components ?

Regards,
ARun.

Message Reflection In WTL

Sunil122119-Nov-03 3:38

Sunil1221

19-Nov-03 3:38

How do we use REFLECTED_COMMAND_CODE_HANDLER_EX(code, func) to reflect messages in WTL. A sample for the same will be greatly appreciated. Thanks in advance for the help

Re: Message Reflection In WTL

Michael Dunn27-Nov-03 7:22

Michael Dunn

27-Nov-03 7:22

WTL for MFC Programmers, Part IV - Dialogs and Controls[^] where I cover WTL's message map enhancements.

--Mike--
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