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termal wrote: BSTR bstr = _T("text");
This is a serious coding error. For a start a BSTR is length prefixed. This means that the length of the BSTR is stored before the pointer. Your string is not. Secondly BSTRs are always Unicode; use L"your string" not _T. Finally, in most instances, a specific allocater is assumed. Your code should look like this:
BSTR bstr = SysAllocString(L"text");
To free the string use SysFreeString.
No offence, but this is basic COM; I recommend doing some serious reading as creating software lacking these fundamentals will end in tears
Steve
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Hello,
thank you for explanation how to use BSTR!
with best regards!
termal
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There are classes such as ATL's CComBSTR and _bstr_t (not part of ATL) which make working with BSTRs easier and safer.
Steve
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I know I'm being a bit anal, but if you are going to _T and TCHAR, then you need to write you app to build in both ANSI and UNICODE. Your code gives the impression that it might build in ANSI but it in fact will not work.
To make your code work in both ansi and UNICODE
TCHAR tChar[255];
_stprintf(tChar,_T("%ls"),(LPCWSTR)bstrName);
// then print
Tim Smith
I'm going to patent thought. I have yet to see any prior art.
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HI,
I want to lunch the local area connection dialog of window thru my VC++ application. How can i achieve that?
Thanx in advance.....
birajendu
CyberG India
Delhi
India
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what do you mean by launch
Arise Awake Stop Not Till ur Goal is Reached.
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lunch. In these parts, that's the meal we eat mid-day.
"If you can dodge a wrench, you can dodge a ball."
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hi all.
I have dialog and Editbox on it.
Now I wont to retrive text from Edit box and I use
<br />
wchar_t ch[255]=L"\0"; <br />
CString ErrorStr("ERROR!!!"); <br />
<br />
m_Edit.GetLine(0,ch);
<br />
if((ch[0] != '.')&&(ch[0] != '*')) <br />
{<br />
<br />
MessageBox(ErrorStr);<br />
<br />
return;<br />
}<br />
but I get diferent type simbols,
Can help?
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just make a control variable of the edit box and use getwindowtext or u can create a cstring variable and use updatedate(trure) and the cstring variable will have the data
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david bagaturia wrote: m_Edit.GetLine(0,ch); // Editbox
use
m_Edit.GetWindowText( ch, 255 );
nave
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How do write WHERE clause in my SELECT query it is giving me error like "data type mismatch in expression syntax"
My Q is "SELECT subcat_id,subcat_name FROM temp_subcat WHERE cat_id = 'get_cat'"
where get_cat is long int variable and cat_id field of DB is also long Integer type.
I thing writing 'get_cat' is not sufficient and i should use some other syntax like '".get_cat."' in PHP i used to write, but again its not working and i am not sure, plz help me out with this simple problem. asfdsf
San
San
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I am not sure, but how about trying get_cat without single quotes like:
"SELECT subcat_id,subcat_name FROM temp_subcat WHERE cat_id = get_cat"<br />
Best Regards,
Suman
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Yes that is good approach, thanks, in fact i tried it
"SELECT subcat_id,subcat_name FROM temp_subcat WHERE cat_id = get_cat"
and the response from program changed than before but it is throwing exception now like --> "Too few parameters, Expected 1"
From this it seems SQL parser is not counting the get_cat parameter, not sure
Thanks again, but plz check if we could figure out this Exception now
San
San
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How do write WHERE clause in my SELECT query it is giving me error like "data type mismatch in expression syntax"
My Q is "SELECT subcat_id,subcat_name FROM temp_subcat WHERE cat_id = 'get_cat'"
where get_cat is long int variable and cat_id field of DB is also long Integer type.
I thing writing 'get_cat' is not sufficient and i should use some other syntax like '".get_cat."' in PHP i used to write, but again its not working and i am not sure, plz help me out with this simple problem.
San
San
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i want to use single dialog for all tabs in tab control.but the value of controls on dialog is vary for each tabs.how to do this.
or
How to create a dyanmic dialog with controls.
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u can make the visible property false where you dont require and visible true where u want that perticular control
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how to add dynamic dialog to tab control.
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now i got material for create a dynamic dialog.In that material dynamic dialog is created when button is clicked.i want to do this with tab .how to do this.
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http://www.codeproject.com/buttonctrl/cxskinbutton.asp
in this code how can one call the button clicked function on pressing enter
vimarsh
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Did you ask of writter this article?
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First, when you need to post a question, put a relevant title.
Also, it would be nice to explain the problem more in detail. I had to read your answer here[^] to see what the problem was. The better you describe what the problem is, the more chances you'll get to have an answer.
By the way, the problem has nothing to do with the skin button, the problem would be the same with a standard button.
To avoid that the dialog closes when you press enter, see here[^].
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