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Re: Lock std::ifstream? Todd Smith30-Oct-01 5:50 Todd Smith 30-Oct-01 5:50  There's a 3rd parameter to open which defaults to filebuf::openprot. Search for that definition in the ifstream header or your docs. It's defined as the share/prot mode. Todd Smith Re: Lock std::ifstream? Derek Price30-Oct-01 5:54 Derek Price 30-Oct-01 5:54  I think I realized that there's more to this on our side as well. The file is already closed when the other program opens it up, so I need to do some file locking to prevent this. Thanks for the reply. The help files for STL that ships with VC++ is horrendous and needs a face lift. Just displaying a cryptic class doesn't count as help in my book! Derek Starting with DLLs LukeV30-Oct-01 4:23 LukeV 30-Oct-01 4:23  Hi, perharps it's me just not searching deep enough, but I can't seem to find basic instructions to make and use a DLL. Where should I start? Thanks! Re: Starting with DLLs AJ12330-Oct-01 9:36 AJ123 30-Oct-01 9:36  I had exactly the same problem when starting out. Check out : http://www.codeguru.com/dll/index.shtml There are different types, the main issues are whether you require to build upon MFC objects, or are dealing with C++, as opposed to simply calling a C function. The other question is whether you want to link at runtime. The simplest way to get started is probably to create a function declared as follow, in a WIN32 DLL App Wizzard Project: extern "C" __declspec(dllexport) long test(char *szTestParam) Then to use the DLL in another project, you must adjust the project settings to link to the lib file for the project (in the library text box). And declare extern "C" __declspec(import) long test(char *szTestParam; Your then free to use the function. Simple as that, (Well! Once you get stuck into it, it's straight forward!) Have Fun Hope I've Helped Rich What does it mean when TRUE is assigned to a function? 30-Oct-01 4:10 30-Oct-01 4:10  //function BOOL& EvaluatingEditChecks() { CRreFrameWnd* pRreFrameWnd = ::RreGetMainWnd(); ASSERT (pRreFrameWnd); return pRreFrameWnd->m_bEvaluatingEditChecks; } //calling code ::EvaluatingEditChecks() = TRUE; int nEvalState = pEditCheck->m_pExprRoot->Evaluate(pRreDlgEntry); ::EvaluatingEditChecks() = FALSE; Can you explain what assigning true and then false to a fuction means? thanks Re: What does it mean when TRUE is assigned to a function? 30-Oct-01 4:19 30-Oct-01 4:19  It is equivalent of the following //calling code // ::EvaluatingEditChecks() = TRUE; CRreFrameWnd* pRreFrameWnd = ::RreGetMainWnd(); ASSERT (pRreFrameWnd); pRreFrameWnd->m_bEvaluatingEditChecks = TRUE; int nEvalState = pEditCheck->m_pExprRoot->Evaluate(pRreDlgEntry); //::EvaluatingEditChecks() = FALSE; CRreFrameWnd* pRreFrameWnd = ::RreGetMainWnd(); ASSERT (pRreFrameWnd); pRreFrameWnd->m_bEvaluatingEditChecks = FALSE; Re: What does it mean when TRUE is assigned to a function? Todd Smith30-Oct-01 5:57 Todd Smith 30-Oct-01 5:57  The function returns a reference to a variable. So setting the function to true is actually setting the variable it returns to true. They do it that way becasue it makes generating code from wizards etc. easier. I wouldn't make a practice of that code technique in normal code. Todd Smith MSChart control giorgos30-Oct-01 3:48 giorgos 30-Oct-01 3:48  hi all, i have an MSChart control in my application. the values are calculated dynamically after some user input, i have one row (group of data) and several columns. i use a barchart type. i want to change the color of a specific column if its value exceeds a limit. how do i manipulate the color drawing of a column ? the answer should lie somewhere in the CVc..classes but i m lost there.. any help ? my error(?) code : CVcPlot aplot = m_pChart->GetPlot(); CVcSeriesCollection aSerCol = aplot.GetSeriesCollection(); CVcSeries aSeries = aSerCol.GetItem(1); // i have 1 series only CVcStatLine aStatLine = aSeries.GetStatLine(); CVcColor aColor = aStatLine.GetVtColor(); aColor.Set(120, 120, 120); and saw no change in the color of the bar.. tia, giorgos Storing a Buffer in a CString Monica30-Oct-01 3:26 Monica 30-Oct-01 3:26  I´m trying to store a buffer received from a server in a CString. The buffer contains data of users connected to server. Everything works fine until i connect 4 users and refresh. Then an assertion occurs in this line: csRcv.GetBufferSetLenght(nRecvlenght); Any Idea??? I´m very on this..... HELP PLZ! Re: Storing a Buffer in a CString Nish Nishant30-Oct-01 4:30 Nish Nishant 30-Oct-01 4:30  Thats a very dangerous function to use. Are you sure, you need to use it. Are you calling ReleaseBuffer anywhere before this line? Have you called GetBuffer? and what about the value of nRecvlength? Nish Placing Controls in a WINDOW 30-Oct-01 3:24 30-Oct-01 3:24  Hi, About 8 years ago I used to develop in C++. That was back in the DOS days when Borland Turbo C++ was king. I mention this so you won't laugh when I tell you that for the past number of years I’ve been writing code in VB. Recently, though, I installed the VC++ and have started to use it for a few DLLs. But now I’m wondering where to begin with developing a GUI in VC++? I went thought the scribble example in MSDN, so I know about Documents, Frames, and Views. But how do you use real controls in a window. Everything I see about controls seems to talk about placing controls in a dialog box. I’m not interested in creating a dialog-based app. I want an MDI app with child windows but I don’t know how to add controls to a child window. Could someone give me a few pointers? Maybe a web page that explains this. Thanks! Carl Re: Placing Controls in a WINDOW Nish Nishant30-Oct-01 4:27 Nish Nishant 30-Oct-01 4:27  Derive your view from CFormView Or manually create your controls using CreateWindow,CreateWindowEx Nish Re: Placing Controls in a WINDOW Michael P Butler30-Oct-01 4:27 Michael P Butler 30-Oct-01 4:27  MFC has a special view type called CFormView, this is basically a dialog inside a view. Search http:\\msdn.microsoft.com for more info. Michael Re: Placing Controls in a WINDOW 30-Oct-01 7:15 30-Oct-01 7:15  Thanks guys, CFormView was the key. Carl Need Graphics for your Project? 30-Oct-01 2:39 30-Oct-01 2:39  Don't you hate it when you work hard on your project, only to find your client isn't so impressed just because of what it looks like on the outside? If you need help with graphics and user interface layout, Z Web Graphics can help. We specialize in working with developer's to give your project the image it deserves. We know how hard you work behind the scenes, and we will help you reflect that on the surface. All you have to do is email us at info@zwebgraphics.com, or fill out our customer profile form located on our website at www.zwebgraphics.com. It all can be done via email, by you telling us a little bit about you and your project, then we can begin designing mock up layouts, and sending you graphics via email. It is all very easy, and very inexpensive. Contact us at info@zwebgraphics.com or visit our website at www.zwebgraphics.com for more information. Z Web Graphics a programmer's best friend Re: Need Graphics for your Project? Anders Molin30-Oct-01 2:45 Anders Molin 30-Oct-01 2:45  You know, I'll bet Chris would be pleased to sell you some space, here on CodeProject, for your add... Just keep it out of the forums! - Anders Money talks, but all mine ever says is "Goodbye!" Re: Need Graphics for your Project? Christian Graus30-Oct-01 11:07 Christian Graus 30-Oct-01 11:07  I would join in Anders in urging everyone not to consider doing business with people who have no idea of Netiquette and think they can get a free ad out of the forums instead of placing an ad on the site where it belongs. Christian After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001 Re: Need Graphics for your Project? Tomasz Sowinski30-Oct-01 11:35 Tomasz Sowinski 30-Oct-01 11:35  Najmul? Is that you? Or maybe you're Roger? Tomasz Sowinski -- http://www.shooltz.com Capturing a key press on a CDialog 30-Oct-01 2:25 30-Oct-01 2:25  I have created a simple dialog and want to capture when a user presses a key, I have tried handeling the WM_KEYDOWN and WM_KEYUP events but they don't seem to get called! any ideas?? andy solman Re: Capturing a key press on a CDialog Eugene Pustovoyt30-Oct-01 2:34 Eugene Pustovoyt 30-Oct-01 2:34  You're must capture its in the PreTranslateMessage function! Best regards, Eugene Pustovoyt Re: Capturing a key press on a CDialog Simon Walton30-Oct-01 2:41 Simon Walton 30-Oct-01 2:41  Your problem is that keystrokes in dialog boxes are handled differently to other window types. Create accelerators for each key you wish to process, override PreTranslateMessage, and call TranslateAccelerator for the messages instead. --- Simon decided that his 'ironlung' nickname sounded kinda stupid, so he decided to use his real name CTreeCtrl doubt RickyC30-Oct-01 2:15 RickyC 30-Oct-01 2:15  Hy everybody!! I'm new in Visual C++, and have a litle question... Does anybody knows how can I deselect an item in a CTreeCtrl? thanks all for the attention cheers from brazil!!! Re: CTreeCtrl doubt Nish Nishant30-Oct-01 4:37 Nish Nishant 30-Oct-01 4:37  Send the TVM_SELECTITEM message and set lParam to NULL. That will deselect all selected items. Nish Sending email James Spibey30-Oct-01 1:58 James Spibey 30-Oct-01 1:58  Hi, I want to send an email using C++. I have seen PJ Naughters MAPI encapsualtion class which I think will do what I want. The thing is that I need to use a dial up connection so this means I need to open the connection, send the email and then close the connection. So, how to manage the opening and closing of the connection? Cheers James Spibey Well cover me in honey and throw me to the lesbians! Re: Sending email Anders Molin30-Oct-01 2:46 Anders Molin 30-Oct-01 2:46  You need to take a look at RAS. (Remote Access Service). There's a couple of articles here on CodeProject that shows how to do that. Just search for RAS... - Anders Money talks, but all mine ever says is "Goodbye!"

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