Re: Adding vectors - ATL / WTL / STL Discussion Boards

Re: Looking for Freelance ATL Programmers

toxcct7-Mar-06 22:11

toxcct

7-Mar-06 22:11

you've got a job advertsisement ?

post it here[^]...
Cool | :cool:

Using VC7.1 compiler under VC6 IDE.... woes.... :S

kevingpo6-Mar-06 23:52

kevingpo

6-Mar-06 23:52

Has anyone tried compiling a VC6 MFC application using the VC7.1 compiler?

I followed this simple article on making VC6 to use the VC7.1 compiler.
http://pixwiki.bafsoft.com/wiki/index.php/Using_the_Optimizing_VC7_Compiler_with_the_VC6_IDE

Then all the errors I've been getting have been from the actual C:\Program
Files\Microsoft Visual Studio\VC98\MFC\Include\ folder (loads of template
syntax errors).

Surely Microsoft must've made a portability/conversion for VC6 MFC to be
used under VC7.1?

Re: Using VC7.1 compiler under VC6 IDE.... woes.... :S

Stuart Dootson7-Mar-06 20:38

Stuart Dootson

7-Mar-06 20:38

Doesn't surprise me - templates is the area where VC7.1 scores highest over VC6, in that it's nearly completely compliant with the C++ Standard, rather than being a not great attempt to be compliant with a draft standard (which was all that was around when VC6 was developed).

Let me guess - have you had to add/remove lots of 'typename' keywords? That's probably the biggest difference - VC6 will assume that dependent names are types, which isn't standard compliant. So, in this example from afxtempl.h (I compiled it with VC8)

<code>template<class TYPE, class ARG_TYPE>
CList<TYPE, ARG_TYPE>::CNode*
CList<TYPE, ARG_TYPE>::NewNode(CList::CNode* pPrev, CList::CNode* pNext)
{
   ... some more code ...
</code>

VC6 will assume CList<TYPE, ARG_TYPE>::CNode is a type, but VC7.1+ won't...because it might not be. You need to put typename CList<TYPE, ARG_TYPE>::CNode to tell the compiler that you are making a guarantee that it's a type.

Anyway - I'd suggest that you're out of luck - you should be OK compiling console and simple Win32 programs, but MFC and ATL programs require a match between compiler and library. That's the portability between VC6 and VC7.1 - you recompile you MFC programs with thea correct compiler/library match.

Adding vectors

Anil_vvs5-Mar-06 18:21

Anil_vvs

5-Mar-06 18:21

Hi All,

Can anyone tell me if there is an easy way to add 2 vectors?

Thanks and Regards,
Anil

Re: Adding vectors

toxcct5-Mar-06 22:07

toxcct

5-Mar-06 22:07

std::vector<myType> v1;
std::vector<myType> v2;
 
for (std::vector<myType>::iterator
     iter  = v2.begin();
     iter != v2.end();
     iter++) {
    v1.push_back(*iter);
}

Re: Adding vectors

Anil_vvs5-Mar-06 22:13

Anil_vvs

5-Mar-06 22:13

Thanx a Lot!!

Re: Adding vectors

Stephen Hewitt5-Mar-06 23:29

Stephen Hewitt

5-Mar-06 23:29

Or without an explicit loop:

std::vector<myType> v1;
std::vector<myType> v2;
 
std::copy(v2.begin(), v2.end(), std::back_inserter(v1));

This code assumes:

#include <vector>
#include <algorithm>
#include <iterator>

Steve

Re: Adding vectors

Stephen Hewitt5-Mar-06 22:40

Stephen Hewitt

5-Mar-06 22:40

If you mean make a third vector by summing two other vectors? If yes this code will do it:

vector<int> v1, v2, vout;
// Other code here...
ASSERT(v2.size()>=v1.size());
transform(v1.begin(), v1.end(), v2.begin(), back_inserter(vout), plus());

This code assums the following:

#include <vector>
#include <algorithm>
#include <iterator>
#include <functional>
using namespace std;

Steve

RGBQUAD

davidhart1-Mar-06 5:38

davidhart

1-Mar-06 5:38

Are the pixels in the RGBQUAD array stored from top left to bottom right of the image. I am trying to test sections of an image for color and I need to know how the pixels are stored.

For example:

bi->bmiColors[0].rgbBlue is the top left pixel and bi->bmiColors[lastindexvalue].rgbBlue is the bottom right pixel

Is that correct?

Re: RGBQUAD

John R. Shaw4-Mar-06 16:09

John R. Shaw

4-Mar-06 16:09

Yes that is where those pixels would be stored, provided the array was loaded properly. But working with images is usualy more complicated than that, it depends on the format of the image and who is filling the array.

INTP
Every thing is relative...

Re: RGBQUAD

C^hris L^osinger7-Mar-06 10:00

C^hris L^osinger

7-Mar-06 10:00

davidhart wrote:
I need to know how the pixels are stored.

how do you know they are stored as RGBQUADs ?

Cleek | Image Toolkits | Thumbnail maker

Strange ActiveX behaviour

Monty²1-Mar-06 2:58

Monty²

1-Mar-06 2:58

i have an activex control.

when i place it on a webpage like this

<OBJECT id="myObj" codebase="myObj.CAB#version=1,0,5,0" classid="clsid:57F..." border="0" height="514" width="655">

and in Javascript i write a func

myObj.OnSave(); //Note OnSave is not an event

it works perfectly, OnSave function is called successfully

but if i embed the same control on either VB or VC the OnSave function is not in the exported list at all
Not even in the object browser WTF | :WTF:

so i tried

CString szStr("OnSave"); 

IDispatch *pObj;
pUnk->QueryInterface(IID_IDispatch,(void**)&pObj);

DISPID FuncID; 
OLECHAR FAR* szMember = szStr.AllocSysString(); 

HRESULT hr = pObj->GetIDsOfNames(IID_NULL,&szMember,1,LOCALE_SYSTEM_DEFAULT,&FuncID); 
::SysFreeString(szMember);

this also return DISP_E_UNKNOWNNAME

i am stumped the control is same then why this kind of stuff

can anyone shed more light on this

The control is not written by me and i cannot contact the guy who did wrote it

please help

C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg

HWND of an ActiveX control

Monty²28-Feb-06 23:39

Monty²

28-Feb-06 23:39

i have a (Video Player like) activex control that is embedded on an IE window which in turn is embedded on my CDialog is there any way by which i can get the HWND of the activeX control.
i can get the IHTMLElement for the <object> tag in HTML but is there any way which can give me the HWND of the player

C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg

Re: HWND of an ActiveX control

Stephen Hewitt1-Mar-06 11:53

Stephen Hewitt

1-Mar-06 11:53

It may not have a window if it's a windowless control. If it has a window today it may not "tomorrow" if you upgrade the component and the implementers decide to optimize it by making it a windowless control. In general groveling around with the HWNDs of an ActiveX controls is asking for trouble. What are you trying to do? Perhaps there is a way to do it without side stepping the ActiveX control framework - This would be preferable.

That said if it's got a window you can use the IOleWindow::GetWindow method to get its handle. The first step is to use IE's interfaces to get the IHTMLObjectElement interface of the object tag then you call the IHTMLObjectElement::get_object method to get the IDispatch interface of the control itself. You call QueryInterface on this for IOleWindow and then call the IOleWindow::GetWindow the get the HWND.

Good luck.

Steve

Re: HWND of an ActiveX control [Edited]

Monty²1-Mar-06 20:47

Monty²

1-Mar-06 20:47

QueryInterface fails for IOleWindow Sigh | :sigh:

used get_object to get the IDispatch called a few functions of the control as well so this is the right IDispatch but it doesn't return IOleWindow

But this control is a windowed one i can see it if i use Spy++

This control is behaving very strangly as i mentioned in the other post (on top of this one)

maybe i should use WM_CREATE hook (don't really want to do that)

any suggestions

i Queried for IOleInPlaceObject instead and it succeeded and i call
GetWindow to get the window handle
thanks for all the help

-- modified at 2:59 Thursday 2nd March, 2006

Re: HWND of an ActiveX control [Edited]

Stephen Hewitt1-Mar-06 21:43

Stephen Hewitt

1-Mar-06 21:43

Try QIing for IOleInPlaceObject in place of IOleWindow.

Steve

undefined class 'ATL_NO_VTABLE

saravana pandy28-Feb-06 21:57

saravana pandy

28-Feb-06 21:57

Hai,
I am a newbie to ATL COM.I have developed my ATL Server(dll server).When i try to access the server from a client i get error
" 'CsampleATL' uses undefined class 'ATL_NO_VTABLE' "
Pls help me to fix this.Any help appreciated.

Saravana Kumar

Re: undefined class 'ATL_NO_VTABLE

User 2155972-Mar-06 19:38

User 215597

2-Mar-06 19:38

Can you post the code snippet for the way you are accessing your server?

Have a great day ahead!
Regards,
Sohail Kadiwala
(My Blog - http://blogs.wdevs.com/sohail/[^])

modified 21-Apr-21 21:01pm.

about WTL Attach some window.

FlyWithYou28-Feb-06 17:03

FlyWithYou

28-Feb-06 17:03

pWnd = new CMyWnd;
pWnd->Attach(hWnd);
pWnd->SetWindowText("dddd"); // it's ok.

but not handled WM_LBUTTONDOWN message? why?

-------------------------------------

class CMyWnd :<br />
 public CWindowImpl<CMyWnd><br />
{<br />
public:<br />
	BEGIN_MSG_MAP(CMyWnd)<br />
		MESSAGE_HANDLER(WM_LBUTTONDOWN, OnLButtonDown)<br />
	END_MSG_MAP()<br />
<br />
	LRESULT OnLButtonDown(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)<br />
	{<br />
		MessageBox("");<br />
		return 0;<br />
	}<br />
};

----------------------------------
how can handle the exist window some message ,like Attach(), but it will use Detach(), i want use some function like MFC's CWnd::FromHandle(), only use it can Attach the window.

where use Detach() is good?

Re: about WTL Attach some window.

Steve Echols28-Feb-06 19:29

Steve Echols

28-Feb-06 19:29

Have you tried pWnd->SubclassWindow(hWnd) instead of Attach?

delete this;
* poof! *

Re: about WTL Attach some window.

FlyWithYou28-Feb-06 20:25

FlyWithYou

28-Feb-06 20:25

1.SubclassWindow() not need UnSubclassWindow()?

2.can SubclassWindow() and Attach() Attach other process windows?

3. pWnd = new CMyWnd;

can in CMyWnd delete itself? like MFC

void CMyDlg::PostNcDestroy() <br />
{<br />
	// TODO: Add your specialized code here and/or call the base class<br />
	delete this;<br />
}

Re: about WTL Attach some window.

Steve Echols28-Feb-06 20:53

Steve Echols

28-Feb-06 20:53

I've only worked with SubclassWindow in the same process, so can't answer to that, other than to say give it a go and see what happens Smile | :)

delete this;
* poof! *

Re: about WTL Attach some window.

Jörgen Sigvardsson28-Feb-06 21:36

Jörgen Sigvardsson

28-Feb-06 21:36

FlyWithYou wrote:
2.can SubclassWindow() and Attach() Attach other process windows?

No. I don't see how you could call the original window procedure, nor do I see how the other process can call the subclassed window procedure.

how hook the one proces(or thread) all the windows?

HOW WHAT26-Feb-06 20:31

HOW WHAT

26-Feb-06 20:31

wtl or atl had some about this function?

how to notify COM class in another class

brygid26-Feb-06 19:03

brygid

26-Feb-06 19:03

I had an simple object by using ATL Object wizard and a generic class CTCPSocket.
The com object name is CTest and interface is ITest. This class had a interface Add and a connection point Fire_notify.
And CSocket had two methods add_in and notify.

The code as following:
//CTest class
CTest:Add(long port)
{
CTCPSocket sk;
sk.add_in(port);
}
CTest:OnNotify()
{
Fire_notify();
}

//CTCPSocket class
CTCPSocket:add_in(long port)
{
//create a socket and listening
}
CTCPSocket:notify()
{
//created a tcp connectiong?
//when created a socket accept,pass the event to CTest:OnNotify()
}

when the client call the CTest->Add method, CTCPSocket will create a socket and listening, but the problem is: when there is a tcp connection event,how to pass the event to CTest:OnNotify() from CTCPSocket:notify()?

Thanks

Brygid
www.ecq.name

brygid
www.ecq.name

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