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typeid Operator
C++ Specific —>
typeid( type-id )
typeid( expression )
The typeid operator allows the type of an object to be determined at run-time.
The result of a typeid expression is a const type_info&. The value is a reference to a type_info object that represents either the type-id or the type of the expression, depending on which form of typeid is used. See type_info Class for more information.
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Try:
CDialog dlg;
if (dlg.IsKindOf(RUNTIME_CLASS(CDialog)))
...
"Take only what you need and leave the land as you found it." - Native American Proverb
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Hello!
I have a strange problem.
There are a TestApplication and a DLL.
DLL exports one function:
__declspec ( dllexport ) void StartTest (HWND hWnd)<br />
{<br />
AFX_MANAGE_STATE(AfxGetStaticModuleState());<br />
<br />
CWnd *pParent = CWnd::FromHandle (hWnd);<br />
g_pDialog1 = new CDialog1 ( pParent );<br />
g_pDialog1->Create ( IDD_DIALOG_1, pParent );<br />
g_pDialog1->ShowWindow ( SW_SHOW );<br />
}
There is only one ListCtrl on the dialog. And when a user doubleclicks on the ListCtrl, thete will be shonw a ExEditBox (inherited from CEditBox)
The TestApplication (Dialog based) calls StartTest:
StartTest ( this->m_hWnd );
The strange is, that when i press ENTER in the pop-up EditBox my TestApplication closes (i'm tring to catch WM_KEYDOWN in ExEditBox's PreTranslateMessage, but there are no messages and all messages are going to the TestApplication). Do you know why?
And it word exelent, if i'd make the same without DLL.
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Hi,
The problem is not in the dll. It is a CEdit standard behavior;
when the focus is in a editbox and enter key is pressed, the dialog will call CDialog::OnOk method and close itself. The overcome that, you do the following:
* Override CDialog::OnOk method. So, you have:
void CMyDialog::OnOk()
{
CDialog::OnOk(); // default behavior
}
* Remove the call of baseclass's OnOk so that you have a dummy CMyDialog::OnOk
method.
* Now, the problem is overcome.
But if you have a button with IDOK handle on the dialog box, you need to change its id (say IDC_OK) and create a handler for that IDC_OK. So, you can
put CDialog::OnOk call in that handler.
--
======
Arman
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I can't attach the project to this thread...
But my problem is not OnOK.
As i told above PreTranslateMessage of ExEdit does not receive any messages.
Sure i could get OnOK in main programm, then ignore it and send a user message to dll ( to child dialog ), so that the child dialog will hide this editbox. But i don't it is a good solution.
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Fester_1977 wrote: Sure i could get OnOK in main programm, then ignore it and send a user message to dll ( to child dialog ), so that the child dialog will hide this editbox. But i don't it is a good solution.
Just a suggestion, don’t know if it will work or not but try DoModal() instead of creating a modeless window.
DEBUGGING : Removing the needles from the haystack.
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How a text can be displayed in the language set in the Local.
anil
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You need to first retrieve the local language set on the machine, and also provide strings in your string table for each language you want your app, and then load the according strings from your string table.
~RaGE();
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Hi guys,
I need help.
Can you tell me how to know what are the ports that are currrently being occupied by a particular application.
I am writing an application which would tell the user what are the ports being occupied by an application.
Owner Drawn
--Nothing special
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whenever I set a breakpoint and excute debug, a message box pops up displaying the following message:
one or more breakpoints can not be set and have been disabled, excution will stop at the beginning of the program.
I tried placing breakpoint at different place, but the same error occured.
what is wrong? how can I fix it?
Thank you very much!!!
-------------------
I am learning C++ and English
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This can happen if you put the break point in a dll project and you're application is loading that dll dynamically.
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Check this[^]
Bye
Cool Ju 
Vote for Cool Ju
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thank you all very much, I find that it was because my project was compiled in release mode.
Thank you very much!!!
-------------------
I am learning C++ and English
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I use a software (coreftp) which can read unix file permissions (such as drwxrwxrwx) by ftp connection.
but I don't know how to do that myself, please help.
thx
includeh10
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Hello.
If I remember it right, the operating system at the ftp server returns a "dir" listing in it's native format.
A Unix FTP-server will (normally) return a ll-listing as a response on a FTP LIST-command.
Just find the correct positions in the returned ll-strings, and you will get the file permissions.
(As far as I remember, that's the only reason why you have to set what host type you are communicating with. The ftp client program has to know where to find the different pieces of information in the returned directory listing).
This isn't the sample you wanted, but if you find a source code of a FTP-client, then you will know where to look. 
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 This seems a little strange. I created a CPen object using
LOGBRUSH logbrush;
logbrush.lbStyle = BS_SOLID;
logbrush.lbColor = RGB(0, 0, 0);
myPen.CreatePen(PS_SOLID | PS_GEOMETRIC, 1, &logbrush);
pDC->SelectObject(&myPen);
I have also tried it without the LOGBRUSH structure, but in either case, if I use a pen width of 1 I get a very fine line when I draw an arc(). If I use a pen width of 2 I get a line width of more than 1/16th of an inch (far more than 2 pixels). Any Ideas on why this is and, more importantly, how to change the pen width so it is more than 1 pixel but far less than 1/16th of an inch?
Buck
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Hi,
I am trying to put BSTR variable in buffer, using sprintf however it is showing only first charactor.Can you please let me know how to store it in buffer.I am trying
fun (BSRT name,...)
sprint(buff,L"Name =%s", name);
Thanks
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itkid wrote: ...however it is showing only first charactor.
What is it? How are you verifying this?
This works fine for me:
void main( void )
{
BSTR name(_T("David"));
TCHAR buff[32];
_stprintf(buff, _T("%s"), name);
}
"Take only what you need and leave the land as you found it." - Native American Proverb
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DavidCrow wrote: BSTR name(_T("David"));
This is dodgy. A BSTR is not just a wide string - It has a length prefixed before the first character (before where the pointer points). Code like this means that this length prefix is not initialized. This is a serious error and bloody hard to track down. Here are a few examples which show some of the problems:
BSTR name(L"David");
UINT Len = SysStringLen(name);
SysFreeString(name);
Steve
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That will happen if you try to treat a wide (UNICODE/BSTR) string as an narrow (ANSI) string.
If using the ANSI version of sprintf(...), %s means ANSI string and %S (uppercase 'S') means UNICODE string. For the UNICODE version, the meaning of the format specifiers is reversed.
Additionally, if you pass a wide version of a string as the format specification to the (ANSI version of) sprintf(...), only the first character will be formatted into the buffer ('N' in your example above).
Peace!
-=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Tip for new SUV drivers: Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)
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itkid wrote: I am trying to put BSTR variable in buffer, using sprintf however it is showing only first charactor.Can you please let me know how to store it in buffer.I am trying
fun (BSRT name,...)
sprint(buff,L"Name =%s", name);
What about this
CString str;
str.Format("Name =%s", name);
BSTR buff= str.AllocSysString()
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
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Hello. I'm looking to display some html in a dialog/PropertyPage. Ideally I would like to be able to just send an html string to ClassX and have that displayed as it would in a browser in my PropertyPage.
I've looked into HtmlView, but it appears that it requires using an actual html file (url or local) to be specified. I would rather not have to create a temporary html file if I can get away with it.
Any thoughts, link, or comments on this would be greatly appreciated.
Thanks.
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CodeGoose wrote: I've looked into HtmlView, but it appears that it requires using an actual html file (url or local) to be specified. I would rather not have to create a temporary html file if I can get away with it.
Any thoughts, link, or comments on this would be greatly appreciated.
Try WebBrowser control...it's in Registered ActiveX directory
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
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