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Re: maximum length of a CString object Kastellanos Nikos5-Jun-01 2:49 Kastellanos Nikos 5-Jun-01 2:49  There is no limitation. Actually there is but it's has to be somewhere up to 4G. - - - - - - - - - - - - - - - - - - Memory leaks is the price we pay \0 01234567890123456789012345678901234 Re: maximum length of a CString object Tomasz Sowinski5-Jun-01 2:55 Tomasz Sowinski 5-Jun-01 2:55  Actually, its 2GB, but I don't think it makes any difference. Tomasz Sowinski -- http://www.shooltz.com.pl Usenet 5-Jun-01 2:05 5-Jun-01 2:05  I'm writing a simple newsreader and I'm a bit surprised at how much work it needs . The NNTP protocol itself is simple enough; the tricky part is to parse and decode attachments. There seems to be tons of RFC's that deal with this (MIME, UU Encoding, base64, etc). Where is the best place to start reading? Are there any good C++ libs around? Thanks for suggestions Re: Usenet Anders Molin5-Jun-01 6:00 Anders Molin 5-Jun-01 6:00  For Base46 and Quoted Printable you could take a look at http://www.codeproject.com/string/ammimeutils.asp UUEncoded is a bit more tricky because there is no real standard for it. The only thing I have found describing it, is some Free BSD Header files - Anders Money talks, but all mine ever says is "Goodbye!" Re: Usenet 5-Jun-01 6:20 5-Jun-01 6:20  See Dundas Software They have Ultimate TCP/IP that has also NNTP , MIME and UUencode. I think they have C or C++ source code plus some COM CScrollView 5-Jun-01 0:32 5-Jun-01 0:32  I've got a problem with CScrollView: I initialise scrolling with SetScrollSizes(...) /*as it's written in every book*/, but afterwards when I scroll the text isn't scrolled properly: i mean, that the "old" text remains, the scrolled text is shown underneath the old (this concerns only the text which was visible at first), the text, which was output in the invisible part of the document, so to say, is not scrolled at all Re: CScrollView Tomasz Sowinski5-Jun-01 0:44 Tomasz Sowinski 5-Jun-01 0:44  You should post your OnDraw (and OnEraseBkgnd if you've overriden this function). Without that, it's rather hard to tell what's wrong. Tomasz Sowinski -- http://www.shooltz.com.pl Re: CScrollView 5-Jun-01 1:38 5-Jun-01 1:38  My OnDraw is this: void CFormulaEditorView::OnDraw(CDC* pDC) { CFormulaEditorDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); CFont font; LOGFONT lf; memset(&lf, 0, sizeof(LOGFONT)); lf.lfHeight = 20; lf.lfCharSet = 2; strcpy(lf.lfFaceName, "Times New Roman"); VERIFY(font.CreateFontIndirect(&lf)); CClientDC dc(this); CFont* def_font = dc.SelectObject(&font); UINT l = lf.lfHeight; for (int i=0; i<=pDoc->Formulas.GetUpperBound(); i++) { dc.TextOut(0, 110*i+110/2-l, pDoc->Formulas[i]); } ///////////////////////////////////////////////////// // Done with the font. Delete the font object. dc.SelectObject(def_font); font.DeleteObject(); } I suppose the problem is in for (int i=0; i<=pDoc->Formulas.GetUpperBound(); i++) { dc.TextOut(0, 110*i+110/2-l, pDoc->Formulas[i]); } that it redraws this text on every scrolling event, but where else can I write this?? Re: CScrollView Tomasz Sowinski5-Jun-01 1:48 Tomasz Sowinski 5-Jun-01 1:48  Do not use CClientDC created inside OnDraw - use pDC passed as parameter. Tomasz Sowinski -- http://www.shooltz.com.pl Re: CScrollView 5-Jun-01 4:25 5-Jun-01 4:25  thanks, i know ut's very simple (but i don't have enough experience with VC - actually <1 month) A problem with CScrollView 4-Jun-01 23:19 4-Jun-01 23:19  I'm using CScrollView in my App. I want to Show the scroll bar all the time, regardless it is scrollable or not. So I try to change cs in CScrollView::PreCreateWindow(...). But Whatever I do, it dosn't work. I hope someone could help me. Thanks a lot. Disconnected Recordset yamini4-Jun-01 18:38 yamini 4-Jun-01 18:38  Hi All, I have a problem with disconnected recordsets.I ahve a component.One if it's function will get all the Records in a Database.I am passing the Recordset pointer from the server to the Client.I am using disconnected recordsets for this. I can see that at the server side I am getting the Recordset pointer.But, I could not get this pointer on the client side. the function has the protoype STDMETHODIMP GetAllElements([out]IUnknown **ppRecordset); I could get the Recordset pointer at the server side, but could not pass it to client.I am using Client side cursor(adUseClient) and standard Marshaling. what could be the problem . Thanx in advance for the help. Regards, yamini How to use CToolBar and CStatusBar in Dialog-based application? 4-Jun-01 17:53 4-Jun-01 17:53  I want to use dialog-based frame, but I cannot make CToolBar and CStatusBar to be displayed on the dialog form? Please tell me how to do it. Re: How to use CToolBar and CStatusBar in Dialog-based application? Tomasz Sowinski5-Jun-01 0:32 Tomasz Sowinski 5-Jun-01 0:32  Check DLGCBR32 sample. It demonstrates adding a status bar and toolbar to dialog boxes. Tomasz Sowinski -- http://www.shooltz.com.pl Thanks 5-Jun-01 3:50 5-Jun-01 3:50  Thank you very much. How to make STL work in Vc++ 6.0 ? 4-Jun-01 16:51 4-Jun-01 16:51  STL is not working in my Vc ++ 6.0 .... Even for microsoft examples this compiler is returning errors ... Why ? Does anybody have any idea ? Is it corrected by patches ? Re: How to make STL work in Vc++ 6.0 ? Gerald Schwab4-Jun-01 17:02 Gerald Schwab 4-Jun-01 17:02  Works fine for me. I'm using SGI and Dinkumware in VC++ 6 SP5. Can you post some code? Re: How to make STL work in Vc++ 6.0 ? 4-Jun-01 20:52 4-Jun-01 20:52  Hmmm, if you would only tell *what kind* of errors, then somebody might actually be able to help you...;) Re: How to make STL work in Vc++ 6.0 ? 4-Jun-01 22:36 4-Jun-01 22:36  don't forget the /GX switch Re: How to make STL work in Vc++ 6.0 ? Mukkie5-Jun-01 6:44 Mukkie 5-Jun-01 6:44  What stl? Microsoft STL, Hewlett Packard STL,...? STL bug fixes for VC++ Jonathan Gilligan5-Jun-01 8:05 Jonathan Gilligan 5-Jun-01 8:05  There are many bugs in the version of STL that Microsoft ships. For instance, if you put more than 32,768 elements in a list and sort the list, some elements will disappear. Dinkumware has published some extensive patches at http://www.dinkumware.com/vc_fixes.html. Another patch that dinkumware does not include is that if you want to sort a list using your own sort predicate (not just greater<>()), you need to delete the line typedef greater<_Ty> _Pr3; in the header and then change the delcarations of sort() to template<class _Pr3> void merge(_Myt& _X, _Pr3 _Pr) and template<class _Pr3> void sort(_Pr3 _Pr) He was allying himself to science, for what was science but the absence of prejudice backed by the presence of money? --- Henry James, The Golden Bowl CComboBox::CompareItem C Weykopf4-Jun-01 10:40 C Weykopf 4-Jun-01 10:40  Hi, I have a Problem with an ownerdrawn combobox. I want a special sort order depending on the value in itemdata and the string. In the CompareItem Method i cant get the string. ItemID2 of the CompareItemstruct is always -1. ItemID1 is 0 or 1, the Itemdata1 is correct, not the Itemdata2. Where is my Problem Chris Re: CComboBox::CompareItem Tomasz Sowinski5-Jun-01 0:40 Tomasz Sowinski 5-Jun-01 0:40  From MSDN docs on COMPAREITEMSTRUCT: "itemID2: This member will be –1 if the item has not been inserted or when searching for a potential item in the list box or combo box." Tomasz Sowinski -- http://www.shooltz.com.pl Re: CComboBox::CompareItem C Weykopf5-Jun-01 3:29 C Weykopf 5-Jun-01 3:29  Yes, I know the docs. It happens after i called the AddString and SetItemData functions (I hope the function names are correct). chris Re: CComboBox::CompareItem Tomasz Sowinski5-Jun-01 4:04 Tomasz Sowinski 5-Jun-01 4:04  When you call AddString on owner-draw combobox with CBS_SORT and no CBS_HASSTRINGS, its index must be determined. WM_COMPAREITEM is sent to combobox parent, and MFC forwards it to your CompareItem method. This happens *before* item is actually added to the list, so -1 in itemDataX represents the item being inserted. Tomasz Sowinski -- http://www.shooltz.com.pl

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