C / C++ / MFC

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Re: Threads problem Ghazi H. Wadi15-Jan-01 4:08 Ghazi H. Wadi 15-Jan-01 4:08  Create and Initialize cretical section,create a bool bIsCanceled= FALSE then Create a thread function .e.g. MyTHreadCheck() (use begin thread it does not leak memory like CreatThread()). In the cancel button clicked function Enter Cretical section and change the the bIsCanceled flag. in MyTHreadCheck () loop for ever , inside this loop enter cretical section and check if bIsCanceled is TRUE , if so then close the port, exit cretical section and break Loop. Hope that will help Like some code ?? Regards G. Alfadhly <marquee> Elementary my dear Watson! elementary! change user in a MS ACCESS DB under MFC 15-Jan-01 1:17 15-Jan-01 1:17  good morning, i have a problem: i have written a programm which manages MS ACCESS databases. on my computer i am the administator and all is working fine. but by autheor peoples where the administrator doesnt have rights to read and write we have problems. now we think we create there a new user an give them the rights to read and write. now i would like to know how can i set a new user in MY MFC program ( the smae we will create on the computer form the other people) which isnt equal to administartor. that means i would like to set a different user from administrator in my MFC programm to read and write from MS ACCESS databaeses. i am working with DAO and under WIN NT thank you greetings Shared Singleton between EXE and DLL Jason Douglas15-Jan-01 1:10 Jason Douglas 15-Jan-01 1:10  I'm using a Singleton class for some debugging work, and I have a few DLL's supporting my application. My problem is that I have a separate instance of the Singleton for each DLL and the Application. I would like them to all use the same instance of this variable. Is there some shared memory trick or something that I can implement to get around this? Thanks, Jason Re: Shared Singleton between EXE and DLL Ghazi H. Wadi16-Jan-01 9:44 Ghazi H. Wadi 16-Jan-01 9:44  There is an article that will provide you with a work around for your problem. hope it will help you "HOWTO: Alternative Implementation of ATL Singleton" The singleton implementation in this article works around this problem by returning a marshaled pointer in IClassFactory::CreateInstance(). Famous Last Words: "TRUCK!!!" CDaoRecordset & Access2000 jerry0davis14-Jan-01 22:26 jerry0davis 14-Jan-01 22:26  I'm using a CDaoRecordset derived class to read a DAO Access database. The problem I have is reading Access2000 databases. VC6 does not seem to like Access2000 DAO databases. In order for it to read correctly I have to save the database as a "previous version" (Access97?). Any idea how I can read a DAO Access2000 database with VC6 please? Thanks Re: CDaoRecordset & Access2000 Anders Molin14-Jan-01 23:54 Anders Molin 14-Jan-01 23:54  Try downloading and installing the latest MDAC from MS. http://www.microsoft.com/data/ - Anders Re: CDaoRecordset & Access2000 jerry0davis15-Jan-01 2:54 jerry0davis 15-Jan-01 2:54  Thanks. I've downloaded it, and will test it soon. Re: CDaoRecordset & Access2000 jerry0davis17-Jan-01 1:35 jerry0davis 17-Jan-01 1:35  I've downloaded the MDAC stuff and I started by trying to open my Access2000 database. Simple I thought! All I want to do is open an .mdb file! The problem is I can't seem to work out what the correct connection string is. Microsoft's example is _bstr_t strCnn("Provider=sqloledb;Data Source=MyServer;" "Initial Catalog=pubs;User Id=sa;Password=;"); pConnection->Open(strCnn,"","",adConnectUnspecified); I assume my data source is "MS Access Database". What does initial catalog mean? Some other examples show a server being specified. Well I just want the open the file! It might not be on a server... Thanks for any help at all. Re: CDaoRecordset & Access2000 Anders Molin17-Jan-01 1:44 Anders Molin 17-Jan-01 1:44  Try this one: "DBQ=F:\dbpath\test.mdb;DefaultDir=F:\dbpath\;Driver={Microsoft Access Driver (*.mdb)};DriverId=281;FIL=MS Access;;MaxBufferSize=2048;MaxScanRows=8;PageTimeout=5;SafeTransactions=0;Threads=3;UID=admin;UserCommitSync=Yes;;" it should work. - Anders Re: CDaoRecordset & Access2000 jerry0davis17-Jan-01 2:39 jerry0davis 17-Jan-01 2:39  Fantastic, thanks, it works!!!!!!!!!!! Re: CDaoRecordset & Access2000 Anders Molin17-Jan-01 1:47 Anders Molin 17-Jan-01 1:47  Oops, I forgot... "initial catalog" is a database on a SQL Server... - Anders RichEditCtrl 14-Jan-01 18:51 14-Jan-01 18:51  Hi, I'm writing a simple chat app, and I'm using a RichEditCtrl as the display of the conversation. The problem I'm having is that I cannot seem to insert any text into the RichEdit. I've looked at the MFC help and it doesn't really mention anything about something as simple as inserting text. It does say use SetWindowText(), but that replaces whatever is in the control, which I don't want. The only other function that is related to my problem is the StreamIn(), but I cannot get that to work. I copy my message to pbBuff, but StreamIn() always returns as 0 chars read, or it will just keep on calling the callback function without ever stopping. I would appreciate any help on this, because I, surprisingly, cannot find information anywhere. Thanks. Sriram Re: RichEditCtrl 14-Jan-01 19:09 14-Jan-01 19:09  I figured out how to do it....I gotta say that Callback functions are a crappy way to insert text. Is it too hard to make a InsertText() function Microsoft?? Sriram Re: RichEditCtrl Erik Funkenbusch15-Jan-01 11:51 Erik Funkenbusch 15-Jan-01 11:51  In true programmer fashion, you'd rather blame your tools than yourself. There *IS* an InsertText function. It's called ReplaceSel() (or rather EM_REPLACESEL). If you read the docs, it says "If there is no current selection, the replacement text is inserted at the current location of the caret. " Re: RichEditCtrl 16-Jan-01 9:51 16-Jan-01 9:51  How intuitive is a ReplaceSel() function compared to InsertSel()?? Give me a break. I, as a user, should not need to scour through the entire documentation to do something so inherent to RichEdit boxes. This is what I have to do to insert text at the end of the current text in the control: int len = GetWindowTextLength() SetSel(len,len); ReplaceSel("whatever") What I'm saying is this is far too much unecessary work to do something so simple. Besides, the documentation is not even clear about whether to do this or use the StreamIn() method. All I'm saying is that this can be far simpler than it is right now. Sriram Re: RichEditCtrl 16-Jan-01 9:52 16-Jan-01 9:52  How intuitive is a ReplaceSel() function compared to InsertText()?? Give me a break. I, as a user, should not need to scour through the entire documentation to do something so inherent to RichEdit boxes. This is what I have to do to insert text at the end of the current text in the control: int len = GetWindowTextLength() SetSel(len,len); ReplaceSel("whatever") What I'm saying is this is far too much unecessary work to do something so simple. Besides, the documentation is not even clear about whether to do this or use the StreamIn() method. All I'm saying is that this can be far simpler than it is right now. Sriram Re: RichEditCtrl Erik Funkenbusch16-Jan-01 12:19 Erik Funkenbusch 16-Jan-01 12:19  To me it's very intuitive. ReplaceSel with no selection inserts. What would you expect it to do when there is no selection (or more precisely, a selection of 0)? Taking your example one step farther, why should it alway add text to the end when inserting text? What if you want it inserted at the beginning, or in the middle? This is standard. Look at the C Runtime library, which forces you to seek in the file to the point you want to overwrite. There is no "Write to end of file" function. Microsoft gives you the flexibility to do what you want. And yes, as a programmer you *SHOULD* be familiar with every word of the documentation for what you're working with. You don't have to remember it all, but you should be familiar with it and be able to find what you're looking for easily. StreamIn is used for (not surprisingly) streaming data into the control from a file, not for general replacement or insertion of text. Thick Cursor - How to avoid it? 14-Jan-01 17:01 14-Jan-01 17:01  Hi, In our application we have the requirement that all edit boxes should have the data right-aligned. I have set the properties for the edit box reource as 'multi-line' and 'Alignment = Right'. The problem is that when I use the mentioned settings, the cursor becomes a thick line (Similar to the cursor observed in 'Notepad'). Is there any way in which Right-alignment can be obtained in Edit Boxes, retaining the normal thin line cursor? Kindly let me know if there is a solution Thanks, Unnikrishnan Nair Hiding the ToolbarControl at the right-top of CFileDialog Sjoerd van Leent14-Jan-01 10:49 Sjoerd van Leent 14-Jan-01 10:49  HELP! How do I hide the right-top toolbar of CFileDialog. When I do: CWnd* pWnd; pWnd = GetParent()->GetDlgItem(lst2); pWnd->ShowWindow(SW_HIDE); I can instantly hide the Listcontrol in the CFileDialog but what's the address of the toolbar CWnd* pWnd; pWnd = GetParent()->GetDlgItem(0x.???); // = the address I need, not defined in dlgs.h pWnd->ShowWindow(SW_HIDE); Does anyone have any idea's? can i create a font to my native lang using VC 13-Jan-01 22:53 13-Jan-01 22:53  I would like to create font in my native language to use it with msword. Is it possible in VC. If so give me the guidelines Advanced thanks Re: can i create a font to my native lang using VC 14-Jan-01 13:22 14-Jan-01 13:22  Goto www.microsoft.com/truetype to find information about TrueType fonts. You may find links to TrueType font editor programs too. Make sure your native language is supported by UNICODE, then you can use GDI to display these characters. Otherwise, you may have to use glyph indexes directly. www.fengyuan.com Unicode clipboard 13-Jan-01 16:08 13-Jan-01 16:08  If CF_UNICODETEXT is only available when performing clipboard operations under NT / 2000, is that saying that it's impossible to copy / paste Unicode characters under Windows 9x? Is there any way around this, for instance, to copy / paste Cyrillic characters while under Windows 9x??? Or am I screwed completely? Do these rules apply to MBCS too, can MBCS even display cyrillic characters??? Any help appreciated. Re: Unicode clipboard Michael Dunn13-Jan-01 16:27 Michael Dunn 13-Jan-01 16:27  9x/Me only use Unicode in limited areas, like OLE/COM and FAT LFN filenames. If you want/need to put Unicode text on the clipboard, you'll need to compose the Unicode strings by hand. You can do an ANSI-to-Unicode conversion on a Cyrillic string (with MultiByteToWideChar()), but that only works if the system's current ANSI codepage supports those Cyrillic characters. With DBCS strings, you must be running a Japanese/Chinese/Korean language version of the OS, and you can only deal with strings in the same language as the OS. Non-DBCS languages of Windows do not handle DBCS strings. --Mike-- http://home.inreach.com/mdunn/ Is history an illusion caused by the passage of time, or is time an illusion caused by the passage of history? Context Menu and Mouse Cursor Patrick Dughi13-Jan-01 14:19 Patrick Dughi 13-Jan-01 14:19  New to MFC, so if this is a simple question, don't nail me for it; I have a CEdit-like control I wrote from scratch. Baring some niceties, it works okay. One thing that always bugs me though, when I right click to get my context-menu, the cursor (IDC_BEAM) stays a beam. I want it to be an arrow (IDC_ARROW) as per normal usage. The menu is defined only programatically, ie, not loaded from a menu resource or the like: inside my OnContextMenu() { CMenu pop; pop.CreatePopupMenu(); pop.AppendMenu(MF_STRING,ID_IMPEDIT_UNDO,"&Undo"); pop.AppendMenu(MF_SEPARATOR,0," "); pop.AppendMenu(MF_STRING,ID_IMPEDIT_CUT,"Cu&t"); pop.AppendMenu(MF_STRING,ID_IMPEDIT_COPY,"&Copy"); pop.AppendMenu(MF_STRING,ID_IMPEDIT_PASTE,"&Paste"); pop.AppendMenu(MF_STRING,ID_IMPEDIT_DELETE,"&Delete"); pop.AppendMenu(MF_SEPARATOR,0," "); pop.AppendMenu(MF_STRING,ID_IMPEDIT_SELECTALL,"&Select All"); > validation/etc snipped < pop.TrackPopupMenu(TPM_LEFTALIGN | TPM_LEFTBUTTON, point.x, point.y, this, NULL); pop.DestroyMenu(); } So how do I change it's cursor to an arrow? logging on 13-Jan-01 11:24 13-Jan-01 11:24  Hello, Is there any way to invoke/run my .exe when user log in to the system, or when system is rebooted. Is there any way to do this in VC++ / NT2000. thanks in advance

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