ATL / WTL / STL

Re: How to get timer id from onTimer() in WTL

7-Jan-09 23:56

Thanks, I've read the article and I must say it's a little ambiguous.
Why couldn't I just leave it as is (including atlmisc.h) is it wrong?
Everything is compiling ok?!

Stuart Dootson8-Jan-09 0:30

Not getting events in ATL

8-Jan-09 0:30

You can - I'm just pointing out the options Smile | :)

I suspect that the WTL CString is no longer developed (I could be wrong), whereas the ATL/MFC CString is as mainstream as C++ gets in Microsoft development.

DrkAngr6-Jan-09 8:56

DrkAngr

6-Jan-09 8:56

Hey everyone I'm having trouble with receiving events in ATL. I have a control that isn't receiving certain events. For example I've created a message handler for WM_CREATE. I've tested this with the ActiveX Control Test Container and the message is never triggered. The same happens with WM_PAINT. However I get messages for WM_LBUTTONDOWN. Can anyone tell me if I'm missing something?

WTL Tab icon headache

Nicolai M2-Jan-09 12:41

Nicolai M

2-Jan-09 12:41

I'm trying to get the icons on a CTabCtrl in high resolution, but all I've managed to establish is, WTL GetPage doesn't return something usefull or I don't know how to use it.

I've got this:

...
CTabCtrl tab = GetTabControl();
int nPages = tab.GetItemCount();

for(int i = 0; i < nPages; ++i)
{
	???? HELP !!!! page = tab.GetPage(i);
	ctrlImageList.AddIcon(LoadIcon(NULL, page.pszIcon));
}

tab.SetImageList(ctrlImageList);
...

ctrlImageList is created using ILC_COLOR32 | ILC_MASK

I'm only able to get the same stupid anoying hatefull error no matter what i try.

Please, i need help solving this

Re: WTL Tab icon headache

JaydeepB6-Jan-09 10:36

JaydeepB

6-Jan-09 10:36

Use TCITEM structure

tab.SetImageList(ctrlImageList);
TCITEM tabItem;
BOOL bSuccess = tab.GetItem(nTabIndex, &tabItem);
//update members related to icons
if(bSuccess)
{
tabItem.mask = ..;
tabItem.iImage = ..;
tab.SetItem(nTabIndex, &tabItem);
}

Re: WTL Tab icon headache

Nicolai M14-Jan-09 1:42

Nicolai M

14-Jan-09 1:42

Sorry the delay, I'm without connection at the moment.

I need to access the pszIcon in the m_psp, to load the icon into a CImageList. I've got a CTreeViewCtrl where I need the tab icons loaded into, and when i use ctrlTreeView.SetImageList(tab.GetImageList()), i only get 8 colors.

...
CTabCtrl tab = GetTabControl();
ctrlTreeView.SetImageList(tab.GetImageList());
...

I'm thinking in the lines of ctrlImageList.AddIcon(LoadIcon(NULL, m_psp.pszIcon)), but i don't know how to access the m_psp.

STL string::const_iterator problem converting code from VC6 to VS2008.

Neville Franks28-Dec-08 12:55

Neville Franks

28-Dec-08 12:55

The following code compiled fine on VC6, but won't on VS2008. The first param to regex_search() does not match any of the function signatures.

    string::const_iterator ssource_pos;
    const boost::match_flag_type mflags = boost::match_default | boost::match_not_dot_newline | boost::format_default;
    const boost::regex re( sre, boost::regex::perl | boost::regex::icase );
    boost::match_results<std::string::const_iterator xmlns:std="#unknown"> what;
    const bool bstat = boost::regex_search( ssource_pos, what, re, mflags );
</std::string::const_iterator>

In VC6 it must have been happy using:

bool regex_search(const basic_string<chart,>& s, 
                  match_results<<br mode="hold" />                      typename basic_string<chart,>::const_iterator, 
                      Allocator>& m, 
                  const basic_regex<chart,>& e, 
                  match_flag_type flags = match_default);

but in VS2008 I get:

1>s:\libs\saigcontrols\strlib\sgstr_parse.cpp(628) : error C2780: 'bool boost::regex_search(const std::basic_string<chart,st,sa> &,const boost::basic_regex<chart,traits> &,boost::regex_constants::match_flag_type)' : expects 3 arguments - 4 provided
1>        s:\libs\boost_1_33_1\boost\regex\v4\regex_search.hpp(152) : see declaration of 'boost::regex_search'
1>s:\libs\saigcontrols\strlib\sgstr_parse.cpp(628) : error C2780: 'bool boost::regex_search(const charT *,const boost::basic_regex<chart,traits> &,boost::regex_constants::match_flag_type)' : expects 3 arguments - 4 provided
1>        s:\libs\boost_1_33_1\boost\regex\v4\regex_search.hpp(144) : see declaration of 'boost::regex_search'
1>s:\libs\saigcontrols\strlib\sgstr_parse.cpp(628) : error C2782: 'bool boost::regex_search(BidiIterator,BidiIterator,const boost::basic_regex<chart,traits> &,boost::regex_constants::match_flag_type)' : template parameter 'BidiIterator' is ambiguous

I would have though using:

const bool bstat = boost::regex_search( *ssource_pos, what, re, mflags );

would resolve this but it doesn't.

Boost reference is here: http://www.boost.org/doc/libs/1_33_1/libs/regex/doc/regex_search.html[^]

I am not using the latest Boost release, yet.

Neville Franks, Author of Surfulater www.surfulater.com "Save what you Surf" and ED for Windows www.getsoft.com

Re: STL string::const_iterator problem converting code from VC6 to VS2008.

Andy Moore29-Dec-08 6:52

Andy Moore

29-Dec-08 6:52

Why not bool bstat = boost::regex_search(ssource_pos.begin(), ssource_pos.end(), what, re, mflags)?

Voici, la jeune femme est enceinte, elle va enfanter un fils et elle lui donnera le nom d'Emmanuel.

Re: STL string::const_iterator problem converting code from VC6 to VS2008.

Neville Franks29-Dec-08 9:52

Neville Franks

29-Dec-08 9:52

Andy Moore wrote:
Why not bool bstat = boost::regex_search(ssource_pos.begin(), ssource_pos.end(), what, re, mflags)?

That is what I finished up doing but I was/am interested in knowing how I could resolve the original issue. ie. get a std::string from a string::const_iterator.

Neville Franks, Author of Surfulater www.surfulater.com "Save what you Surf" and ED for Windows www.getsoft.com

Re: STL string::const_iterator problem converting code from VC6 to VS2008.

Stuart Dootson29-Dec-08 14:04

Re: STL string::const_iterator problem converting code from VC6 to VS2008.

29-Dec-08 14:04

Neville Franks wrote:
I was/am interested in knowing how I could resolve the original issue. ie. get a std::string from a string::const_iterator.

You can't. You can construct a copy of the string from an iterator pair, but technically, there's no way to deduce the string endpoints from a single iterator.

The reason it worked on VC6 is because VC6 std::string iterators were char pointers. Although (strictly), std::strings don't have to be stored as null-terminated strings, in practise they are, so a std::string could be constructed usng a single std::string iterator.

Neville Franks29-Dec-08 14:16

Neville Franks

29-Dec-08 14:16

Thanks Stuart, that's what I was looking for. Head scratching can stop now.

I've just started moving a big project from VC6 to VS2008 and was expecting various issues to confront me.

Neville Franks, Author of Surfulater www.surfulater.com "Save what you Surf" and ED for Windows www.getsoft.com

COM aggregation

KASR121-Dec-08 19:59

KASR1

21-Dec-08 19:59

I have aggregated IID_IInner and IID_IEnumVARIANT as follows

COM_INTERFACE_ENTRY_AGGREGATE(IID_IInner, m_pInnerUnk)
COM_INTERFACE_ENTRY_AGGREGATE(IID_IEnumVARIANT, m_pInnerUnk)

How do i call CoCreateInstance(...) in FinanConstruct() method?

Re: COM aggregation

Stuart Dootson22-Dec-08 0:49

Doubt in QueryInterface pointers

22-Dec-08 0:49

This page[^] gives an example.

KASR121-Dec-08 18:45

KASR1

21-Dec-08 18:45

//
IEP_SimpleObjPtr pEP_SimpleObj1;
pEP_SimpleObj1.CreateInstance(__uuidof(EP_SimpleObj));

IEP_SimpleObj1Ptr pEP_SimpleObj2;
pEP_SimpleObj1->QueryInterface(__uuidof(IEP_SimpleObj2), (void**) &pEP_SimpleObj2);

pEP_SimpleObj2->Release();
//

In the above code I have released pEP_SimpleObj2 pointer.
But still I can call methods using pEP_SimpleObj2 pointer. How?

Re: Doubt in QueryInterface pointers

Stuart Dootson22-Dec-08 0:46

Re: Doubt in QueryInterface pointers

22-Dec-08 0:46

As the object is also referenced by pEP_SimpleObj1, Releasing pEP_SimpleObj2 will probably only decrease the object's reference count to 1, so the object will still exist. If pEP_SimpleObj2 is just pointing within the object pointed at by pEP_SimpleObj1 (highly likely), then so long as the address held in pEP_SimpleObj2 hasn't changed, the pointer will still point at valid memory.

The point is that you cannot rely on this behaviour - it is NOT guaranteed. So don't do it.

Also - the whole point of managed pointers is that you don't need to bother with AddRef and Release - let the pointer objects do that for you in their constructors/destructors.

KASR122-Dec-08 0:51

KASR1

22-Dec-08 0:51

Yes we don't need to release managed pointers.
I tried to check how released pointers will work.
Its clear now. Thanks for your explanation.

cannot open include file 'atlres.h'

josip cagalj19-Dec-08 1:53

19-Dec-08 1:53

Hi to all. I'm trying to open some project wroted using WTL. When I try to rebuild it (using VS2008 on Win XP) I get the compile error as above. Now, "atlres.h" file is in directory which I added to my project settings properly and I don't know why error appears!?
The message states "cannot open.." which means it has no trouble locating it? but rather cant open it?
Please help!
Thanks in advance.

Stuart Dootson19-Dec-08 2:16

19-Dec-08 2:16

I think you need to add the WTL include directory to the include directory path for the resource compiler. Right-click on the project, select 'Properties', select Resources->General in the properties window and add the WTL include directory to Additional Include Directories.

josip cagalj19-Dec-08 2:35

19-Dec-08 2:35

Thanks for replaying to me. I already have directory path (D:\...\WTL80\include) included in Aditional Include Directories.
?

Stuart Dootson19-Dec-08 2:38

19-Dec-08 2:38

In the Additional Include Directories for the resource compiler? I'm NOT talking about the C++ compiler options...

josip cagalj19-Dec-08 2:42

19-Dec-08 2:42

In 'MyProgram' Property Pages under C/C++ General Additional Include Directories.

josip cagalj19-Dec-08 2:47

19-Dec-08 2:47

OK I got you.
Stop complaining about that.
Thanks big time!
Now I get:
"fatal error LNK1104: cannot open file 'C:/Program Files/Microsoft SDKs/Windows/v5.0/Lib/DnsAPI.Lib'" ?

Stuart Dootson19-Dec-08 3:05

19-Dec-08 3:05

That's a completely different matter - if you really need DNSAPI.lib, what I'd do is open a Command Prompt window, and execute the following commands:

CD /d "c:\Program Files"
dir /s/b dnsapi.lib

It might take a while to run, probably, but it'll likely find any DNSAPI.lib you have. On my machine, I get the following output:

C:\Program Files\Microsoft SDKs\Windows\v5.0\Lib\IA64\DnsAPI.Lib
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Lib\DnsAPI.Lib
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Lib\x64\DnsAPI.Lib
C:\Program Files\Microsoft SDKs\Windows\v6.1\Lib\DnsAPI.Lib
C:\Program Files\Microsoft SDKs\Windows\v6.1\Lib\IA64\DnsAPI.Lib
C:\Program Files\Microsoft SDKs\Windows\v6.1\Lib\x64\DnsAPI.Lib
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\PlatformSDK\Lib\DnsAPI.Lib
C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\Lib\DnsAPI.Lib
C:\Program Files\Microsoft Visual Studio 8\VC\PlatformSDK\Lib\AMD64\DnsAPI.Lib

You can see that (for some reason - I don't know why!) I only have Itanium libraries under C:\Program Files\Microsoft SDKs\Windows\v5.0.

josip cagalj19-Dec-08 3:13