Re: Subclassing - ATL / WTL / STL Discussion Boards

Re: how to realize input/output of file?

freehawk23-Dec-03 13:38

freehawk

23-Dec-03 13:38

Thank you very much for your reply.

I need it and will try it.

Freehawk

how to send a broadcast message?

freehawk21-Dec-03 17:33

freehawk

21-Dec-03 17:33

I want to send a broadcast message, and then a lot of windows can receive and re-display datas which is stored in same memory. How to do? Thanks.

Re: how to send a broadcast message?

Abhishek Srivastava21-Dec-03 19:17

Abhishek Srivastava

21-Dec-03 19:17

Hi mr hawk,

use this SendMessage(HWND_BROADCAST,yourMsg, yourwParam , yourlParam);

but this message should be a registered window message. coz this message should be unique so that every window can process it.

you can use RegisterWindowMessage API to create your own unique message.

Smile | :)

Regards.

Abhishek Srivastava
Software Engg (VC++)
India ,Noida
Mobile no 9891492921 Smile | :)

Re: how to send a broadcast message?

freehawk21-Dec-03 21:38

freehawk

21-Dec-03 21:38

Thanks for your reply.
It is useful to me and I will try it.

Freehawk.

Re: OLE DB problem

Steve S21-Dec-03 22:39

Steve S

21-Dec-03 22:39

Are you using the ATL DBCLI templates?
If so, are you also calling Update() after calling SetData() ?

Steve S

Re: OLE DB problem

Steve S22-Dec-03 22:56

Steve S

22-Dec-03 22:56

If it's a wizard-generated one, then the odds are good that you don't need to call SetData(), just change the member data and call Update.

SetData is normally used in situations where you don't have automatic accessor population, if I remember rightly.

Steve S

Subclassing

GeraldoLuiz20-Dec-03 9:42

GeraldoLuiz

20-Dec-03 9:42

I want to subclass some combobox controls on a dialog to handle WM_KEYDOWN msg (to delete contents using DEL key).
1. I`m using CContainedWindow. I use the function:
OnKeyDown(TCHAR nChar, UINT nRepCnt, UINT nFlags) with MSG_WM_KEYDOWN in ALT_MSG_MAP(1).
For one control, it's ok (works fine), but what if I want to subclass more than one and redirect all WM_KEYDOWN msgs to the same function ? How can I tell what control is receiving the message ? The m_hWnd member points to my dialog wnd.
2. I also tried the DDX way, using DDX_CONTROL and defining:
class CCombo: public CWindowImpl<ccombo, ccombobox="">
and defining my controls of this class, but the compiler gives me an error saying that SubclassWindow is not a member of CComboBoxT<class atl::cwindow="">
How can I do it using #1 and what am I doing wrong with #2 ?
Thanks.

Re: Subclassing

Jörgen Sigvardsson30-Dec-03 6:54

Jörgen Sigvardsson

30-Dec-03 6:54

1) See CWindowImpl::GetCurrentMessage(). You'll find the recipient HWND in the MSG-struct, i.e. GetCurrentMessage()->hwnd.

2) That's because CComboBoxT doesn't derive from CWindowImpl which is the template which implements SubclassWindow. CComboBoxT is just a wrapper for an already existing window class, thus it isn't supposed to subclass another class. I never use DDX-stuff, so I wouldn't know how to deal with it. :shrug:

--
Watcha' gonna do, when Hulkamania runs wild on you!?

Bitmap image in IE toolbar... :)

Vermithrax19-Dec-03 14:36

Vermithrax

19-Dec-03 14:36

Alright, I've managed to get buttons and all that working just fine, but I can't figure out how to get just a bitmap in the toolbar... In the google toolbar, for example, they have that lovely google logo over a button... I'd like that, but without the button. Smile | :)

I've even gone so far as to make a button, and make it TB_INDEFINITE (or whatever it is, I'm not looking at my code), but I don't want it greyed out like that. I want it full color, but not clickable at all. I mean, I can have a button, but I don't want it to "click". Any thoughts, anyone?

ATL Server without the WEB.

rkb19-Dec-03 7:58

rkb

19-Dec-03 7:58

I would like to use the substitution capabilities in the ATL server without the output going to the Web. All of the examples that I see have something like: m_HttpResponse << "Hello"; in the handler. I would like to be able to take the output of the handler and use it to build a single string that has all of the sustituitions made. Something like SRF in and HTML out. I have seen CLStencil and that gets me part way but I don't know how to code the handlers so the output is directed to a stream not the WEB.

Thank you.

Kevin Burton
rkevinburton@charter.net

DHTML IE toolband and ActiveX on it

soniko19-Dec-03 4:32

soniko

19-Dec-03 4:32

How can I catch the focus in my ATL control which is put in HTML text in DHTML based IE toolband?

Thread termination in ATL COM

Richard John17-Dec-03 6:12

Richard John

17-Dec-03 6:12

I'm using an free-threaded in-proc DLL server (written in ATL 7.0) which creates a separate thread for asynchronous I/O. If I terminate the separate thread by an interface command (using a terminate event to signal the thread's WaitForMultipleObjects loop), everything works as expected - the thread terminates, and any subsequent GetExitCodeThread call shows the proper exit code.

However, if I wait for COM to call DllMain with DLL_PROCESS_DETACH and then try to terminate the thread, I find that the tread exits, but a subsequent GetExitCodeThread call will return STILL_ACTIVE, and a WaitForSingleObject(hMyThread, INFINITE) call will hang up forever. It seems as though once the
DLL_PROCESS_DETACH is called, the kernel can no longer see that the thread has exited.

Is this correct behavior? If so, why? I was expecting the kernel could always see the thread's exit.

Thanks for any help,
Richard

Re: Thread termination in ATL COM

Tim Smith17-Dec-03 8:49

Tim Smith

17-Dec-03 8:49

Look at the second question:

http://www.microsoft.com/msj/archive/S202B.aspx[^]

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

Re: Thread termination in ATL COM

Richard John17-Dec-03 10:40

Richard John

17-Dec-03 10:40

Thanks, Tim - that answers it!

- Richard

Is WTL UI updating broken on Pocket PC?

Johann Gerell15-Dec-03 13:12

Johann Gerell

15-Dec-03 13:12

Hi!

I have a CFrameWindowImpl-based main frame on Pocket PC 2003 and the newly released WTL. I can not get menu state updating to work using the update ui feature of WTL. I believe the relevant parts of the class definition are these:

class CMainFrame :
  public CFrameWindowImpl<CMainFrame>,
  public CUpdateUI<CMainFrame>,
  public CIdleHandler,
  public CMessageFilter
{
public:
  DECLARE_FRAME_WND_CLASS(APP_MAINFRAME_CLASS, IDR_MAINFRAME);

  BEGIN_UPDATE_UI_MAP(CMainFrame)
    UPDATE_ELEMENT(IDM_HIDE_WEEKEND, UPDUI_MENUPOPUP)
  END_UPDATE_UI_MAP()

  BEGIN_MSG_MAP(CMainFrame)
    ...
    CHAIN_MSG_MAP(CUpdateUI<CMainFrame>)
    CHAIN_MSG_MAP(CFrameWindowImpl<CMainFrame>)
  END_MSG_MAP()
...
};

In CMainFrame::OnCreate() I then do

...
//
// Register object for message filtering and idle updates.
//
CMessageLoop* pLoop = _Module.GetMessageLoop();
ASSERT(pLoop);
pLoop->AddMessageFilter(this);
pLoop->AddIdleHandler(this);

UISetCheck(IDM_HIDE_WEEKEND, true, TRUE);
...

which, unfortunately, doesn't check the menu item.

Any ideas what might be goin on here? Did I miss something?

I can see with UIGetState() that UISetCheck() sort of works, since the state includes the checked bits, but the menu item is not updated! No check mark is drawn!

I can set check marks using raw API, but hey, WTL is supposed to do this for me! So, please...

Thanks for _any_ pointers!

/Johann Gerell

--
Human beings, who are almost unique in having the ability
to learn from the experience of others, are also remarkable
for their apparent disinclination to do so. (Douglas Adams)

Re: Is WTL UI updating broken on Pocket PC?

Jörgen Sigvardsson16-Dec-03 8:44

Jörgen Sigvardsson

16-Dec-03 8:44

Funny you mention this. I was baffled today when I noticed that I couldn't disable menu entries using CUpdateUI<>

Maybe there's a bug in the new WTL release. Frown | :(

[edit]I'm not using WTL on a Pocket PC[/edit]

--
In the land of the blind, be king![^]

Re: Is WTL UI updating broken on Pocket PC?

Johann Gerell16-Dec-03 22:52

Johann Gerell

16-Dec-03 22:52

Seems as a bug in atlframe.h:

The CUpdateUIBase message map entry for WM_INITMENUPOPUP and its message handler are #ifdef-d off for Windows CE. Remove these #ifdefs and menu ui updating works.

Note: AtlIsOldWindows() needs to be modified to take Windows CE version numbering into account, or a debug break will occur there in debug builds after the #ifdef removal.

--
Human beings, who are almost unique in having the ability
to learn from the experience of others, are also remarkable
for their apparent disinclination to do so. (Douglas Adams)

std::string question

User 988515-Dec-03 5:32

User 9885

15-Dec-03 5:32

Given a string "Tests", using MFC CString, I can do:

str.Replace("est", "ask");

and "Tests" will become "Tasks.

What is the recommended method to do this with STL std::string?

Thomas

My article on a reference-counted smart pointer that supports polymorphic objects and raw pointers

modified 29-Aug-18 21:01pm.

Re: std::string question

John M. Drescher15-Dec-03 5:51

John M. Drescher

15-Dec-03 5:51

Use this: http://www.codeproject.com/string/stdstring.asp[^]

John

Re: std::string question

Igor Vigdorchik18-Dec-03 12:35

Igor Vigdorchik

18-Dec-03 12:35

You should use basic_string::replace(). MSDN has a sample on how to use it.

Re: std::string question

Kosenko Kolya19-Dec-03 0:49

Kosenko Kolya

19-Dec-03 0:49

// Copyright(c) 2002 by Kolya Kosenko

void replace_string(string &str, const char *search, const char *repl_value)
{
string::size_type size = char_traits<char>().length(search);
string::size_type repl_value_size = char_traits<char>().length(repl_value);
string::size_type replace_pos = 0;
if(size) {
do {
replace_pos = str.find(search, replace_pos);
if(replace_pos == string::npos) break;
str.replace(replace_pos, size, repl_value);
replace_pos += repl_value_size;
}while(true);
}
}

The button did not work.Please help me

freehawk12-Dec-03 22:59

freehawk

12-Dec-03 22:59

I did some docking windows and add some buttons in them. But after when I clicked the button , nothing happened. why?

the is message loop.

DECLARE_WND_CLASS(_T("CSearchDockingWindow"))
BEGIN_MSG_MAP(thisClass)
MESSAGE_HANDLER(WM_CREATE, OnCreate)
MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBkgnd)
MESSAGE_HANDLER(WM_SIZE, OnSize)
MESSAGE_HANDLER(WM_DESTROY, OnDestroy)
COMMAND_ID_HANDLER(ID_SEARCH_PLACE_BTN, OnPlaceBtn)
COMMAND_ID_HANDLER(ID_SEARCH_ATTRIBUTE_BTN, OnAttributeBtn)
COMMAND_ID_HANDLER(ID_SEARCH_START_BTN, OnSearchStartBtn)
COMMAND_ID_HANDLER(ID_SEARCH_STOP_BTN, OnSearchStopBtn)
CHAIN_MSG_MAP(baseClass)
END_MSG_MAP()

LRESULT OnAttributeBtn(WORD /*wNotifyCode*/, WORD wID, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
CSearchAttributeDlg dlg;

dlg.DoModal();

return 0;
}

Please help me, Thank you .

Re: The button did not work.Please help me

Igor Vigdorchik18-Dec-03 16:36

Igor Vigdorchik

18-Dec-03 16:36

Check out my article http://www.codeproject.com/wtl/stickynotes.asp[^]
You'll find a code that handles button clicks there.
One note though: do not forget to subclass a button and attach it to a CButton object.

Good luck.

Re: The button did not work.Please help me

freehawk18-Dec-03 16:51

freehawk

18-Dec-03 16:51

Thank you very much, I finished it. Now it run good.

Freehawk

How to add a MFC dialog in a WTL project?

freehawk12-Dec-03 21:25

freehawk

12-Dec-03 21:25

I want to call a MFC dialog from the docking window in a WTL project, but it can not be compiled. the message is :
error C2504: 'CDialog' : is not defined.

how to solute it?
Thank you

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