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Re: Is WinAPI programming prereq for MFC Ravi Bhavnani7-Aug-02 9:44 Ravi Bhavnani 7-Aug-02 9:44  Soliant wrote: you must learn Win32 API before learning MFC, is this true ? "Yes", if you want to fully understand MFC and program in it. "No", if you're coming from an X/Motif/Mac/Qt/Tcl background and just want to create a one-off Windows app. /ravi Let's put "civil" back into "civilization" http://www.ravib.com ravib@ravib.com Re: Is WinAPI programming prereq for MFC Christian Graus7-Aug-02 10:04 Christian Graus 7-Aug-02 10:04  Not at all - I think it's better to learn MFC then learn what the Win32 API is doing for you, because you can learn incrementally instead of all at once. Christian We're just observing the seasonal migration from VB to VC. Most of these birds will be killed by predators or will die of hunger. Only the best will survive - Tomasz Sowinski 29-07-2002 ( on the number of newbie posters in the VC forum ) Cats, and most other animals apart from mad cows can write fully functional vb code. - Simon Walton - 6-Aug-2002 Re: Is WinAPI programming prereq for MFC zeki yugnak7-Aug-02 10:16 zeki yugnak 7-Aug-02 10:16  hi how way to follow learn to mfc."programing windows jeff prosise" this book is very good.but other good books are which? Re: Is WinAPI programming prereq for MFC Shog97-Aug-02 10:25 Shog9 7-Aug-02 10:25  zeki wrote: but other good books are which? Here's one for ya! --- Shog9 If I could sleep forever, I could forget about everything... Re: Is WinAPI programming prereq for MFC zeki yugnak7-Aug-02 13:44 zeki yugnak 7-Aug-02 13:44  sorry... may english is not good.. Re: Is WinAPI programming prereq for MFC Shog97-Aug-02 13:51 Shog9 7-Aug-02 13:51  Hey, no worries - don't take it as a slam, it really *is* a good book! --- Shog9 If I could sleep forever, I could forget about everything... Re: Is WinAPI programming prereq for MFC Tomasz Sowinski7-Aug-02 10:17 Tomasz Sowinski 7-Aug-02 10:17  Soliant wrote: I thought MFC was an abstraction away from WinAPI calls. Yes, but (fortunately) the abstraction is just a pretty thin wrapper on API. I'd say API knowledge is big advantage. Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: Is WinAPI programming prereq for MFC Michael P Butler7-Aug-02 22:16 Michael P Butler 7-Aug-02 22:16  You don't need to know it. For my first year back in 1993, I pretty much managed without knowing too much API. Over the years though, you soon realise it's nice to know the API too - especially when hitting the limits of MFC's scope. Michael Time flies like an arrow. Fruit flies like a banana VC++ SAX integration act_x7-Aug-02 7:23 act_x 7-Aug-02 7:23  I am trying to use SAX in my Dialog Based Application . I have a SAXHandler class that derives from the DocumentHandler that SAX provides. My Dialog Class has a SAXHandler object and a SaxParser Object . I am having problems when I link the project. Errors I get are of the type SAXdev.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall SAXParser::~SAXParser(void)" (__imp_??1SAXParser@@UAE@XZ) SAXdevDlg.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall SAXParser::~SAXParser(void)" (__imp_??1SAXParser@@UAE@XZ) SAXdevDlg.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall SAXParser::SAXParser(class XMLValidator * const)" (__imp_??0SAXParser@@QAE@QAVXMLValidator@@@Z) What is the correct method to add the files ? Please help Re: VC++ SAX integration Chris Losinger7-Aug-02 7:39 Chris Losinger 7-Aug-02 7:39  did you implement a constructor and a destructor for your SAXParser object ? -c WWJD? JWRTFM.    found on /. image effects! Re: VC++ SAX integration act_x7-Aug-02 7:51 act_x 7-Aug-02 7:51  I did not . The SAXParser class is in a .hpp class and is as follows : class PARSERS_EXPORT SAXParser : public Parser , public XMLDocumentHandler , public XMLErrorReporter , public XMLEntityHandler , public DocTypeHandler { public : // ----------------------------------------------------------------------- // Class types // ----------------------------------------------------------------------- enum ValSchemes { Val_Never , Val_Always , Val_Auto }; // ----------------------------------------------------------------------- // Constructors and Destructor // ----------------------------------------------------------------------- /** @name Constructors and Destructor */ //@{ /** Constructor with an instance of validator class to use for * validation. * @param valToAdopt Pointer to the validator instance to use. The * parser is responsible for freeing the memory. */ SAXParser(XMLValidator* const valToAdopt = 0); /** * Destructor */ ~SAXParser(); //@} It was said that in SAX one needs to only implement the Handler class that derives from Documenthandler then we need to invoke parser.SetDocumentHandler(& handlerobject) parser.Parse(); The sample code I referred from a Text book did not have any initialization for the parser object . Please help Re: VC++ SAX integration Chris Losinger7-Aug-02 8:08 Chris Losinger 7-Aug-02 8:08  you can't declare a constructor (or destructor) and not implement it. at the very least make them do nothing: ~SAXParser() { } SAXParser::SAXParser(XMLValidator* const valToAdopt = 0) { } WWJD? JWRTFM.    found on /. image effects! retrieving a bmp from acess ns7-Aug-02 6:56 ns 7-Aug-02 6:56  I manually put in .bmps in my access database (its a valid thing to do). The images are of type Ole Object. I am trying to retrieve them in the following: memcpy(pImage, (char *) (_bstr_t) m_pRecordset->Fields->GetItem ("pImage")->Value.bVal, ImgSize); where pImage is allocated big enough . So evidently I am not casting the value right. I do need a char* to show in my ImageBoxes(thats what they take), but my code crashes exactly at the line above. I havent figured out how to inspect and see if the image is valid etc, any ideas as to how I could do that? Thanks for any help you can give me. ns Re: retrieving a bmp from acess Chris Losinger7-Aug-02 7:20 Chris Losinger 7-Aug-02 7:20  cast pImage to a BITMAPFILEHEADER * and look at the members. they should reflect various aspects of your image. -c WWJD? JWRTFM.    found on /. image effects! Re: retrieving a bmp from acess Ranjan Banerji7-Aug-02 7:31 Ranjan Banerji 7-Aug-02 7:31  It may be coiming in as a pointer to bval, i.e., m_pRecordset->Fields->GetItem ("pImage")->Value.pbVal Not sure. But may be Re: retrieving a bmp from acess Joel Lucsy7-Aug-02 8:36 Joel Lucsy 7-Aug-02 8:36  While I've not had to retrieve bmp's from Access, I have had to insert .bmp's into it. I'll provide a few links to get you started. Storing "Paint Brush" images in a Access DB[^] Embedding OLE Objects Into an Access Database [^] I should write a note to remind me to write an article about this stuff. I seem to be too tho. Joel Lucsy (jjlucsy@ameritech.net) Re: retrieving a bmp from acess ns7-Aug-02 9:23 ns 7-Aug-02 9:23  Thanks. I also http://www.codeproject.com/database/usingblob.asp found this which I think will do, still reading it. Thanks for all the input, ns serial communication and bluetooth Frank S.7-Aug-02 6:28 Frank S. 7-Aug-02 6:28  Hi, I have a problem ... i have written a program that communicates with IR - serial communication with my pocket pc and my mobile phone. I used for that a part of the little tty-codesample, which you can find in the help of the Visual C++ tools of Microsoft. I changed there some communication options and it worked. But now i want to use that serial communication with bluetooth. Could that work? And one thing is, that i don't know exactly, how i have to setup the settings for that communication (serial). My current setup is like that: PortDCB.BaudRate = CBR_9600; PortDCB.fBinary = TRUE; PortDCB.fParity = TRUE; PortDCB.fOutxCtsFlow = FALSE; PortDCB.fOutxDsrFlow = FALSE; PortDCB.fDtrControl = DTR_CONTROL_ENABLE; PortDCB.fDsrSensitivity = FALSE; PortDCB.fTXContinueOnXoff = TRUE; PortDCB.fOutX = FALSE; PortDCB.fInX = FALSE; PortDCB.fErrorChar = FALSE; PortDCB.fNull = FALSE; PortDCB.fRtsControl = RTS_CONTROL_ENABLE; PortDCB.fAbortOnError = FALSE; PortDCB.ByteSize = 8; PortDCB.Parity = NOPARITY; PortDCB.StopBits = ONESTOPBIT; and: CommTimeouts.ReadIntervalTimeout = MAXDWORD; CommTimeouts.ReadTotalTimeoutMultiplier = 0; CommTimeouts.ReadTotalTimeoutConstant = 0; CommTimeouts.WriteTotalTimeoutMultiplier = 10; CommTimeouts.WriteTotalTimeoutConstant = 1000; That worked for the IR-communication, but not for bluetooth. Would be very fine, if someone knows a trick to setup for bluetooth communication !!! Greetings, Frank _____ easySMS for pocket PC _____ www.Siedler-Net.de/WinCE/easySMS/ Re: serial communication and bluetooth Frank S.8-Aug-02 23:38 Frank S. 8-Aug-02 23:38  Hi, i have found something on http://msdn.microsoft.com/.../ceconvirtualcomportsample.asp it seems, that it's possible to setup a Virtual COM Port for bluetooth, but does anyone know, if that is possible with the Embedded Visual Tools 3.0, or must i install some new apps for that? Or has anyone that code-sample? Greetings, Frank _____ easySMS for pocket PC _____ www.Siedler-Net.de/WinCE/easySMS/ blob data question ns7-Aug-02 5:22 ns 7-Aug-02 5:22  Hi, Can anyone point me to some information on how to add and retrieve blob data from an Access database, using Visual C++ 6 (not .Net) Thanks, ns Re: blob data question Nish Nishant7-Aug-02 5:26 Nish Nishant 7-Aug-02 5:26  Does Access have a blob data type? I am not sure. There's something called memo but even that is a limited size field I think Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Review by Shog9 Click here for review[NW] Re: blob data question ns7-Aug-02 5:34 ns 7-Aug-02 5:34  I dont know. All I know is that we want to store pictures in a database ( ACCESS), and then retrieve them and show them. I dont know if we could just input them as char*. The embeded nulls in the binary data might be a problem. I really am very new at this, so any help is greatly appreciated! Thanks, ns Re: blob data question Tomasz Sowinski7-Aug-02 5:48 Tomasz Sowinski 7-Aug-02 5:48  Nishant S wrote: Does Access have a blob data type? I am not sure. There's something called memo but even that is a limited size field I think Access has both memos and blobs. Tomasz Sowinski -- http://www.shooltz.com What is "scratch" and why can everything be made from it? Re: blob data question Ranjan Banerji7-Aug-02 6:33 Ranjan Banerji 7-Aug-02 6:33  Not sure how to do it using ADO but in principal it should be the same as ODBC. In ODBC the data will come through as a : SQL_C_BINARY | SQLCHAR * | unsigned char * You can load the data into a void pointer and then write it to a file. I did this around 5 years ago. Selected BLOBs of image files from Oracle and wrote it to the drive. Just cannot recall the exact syntax. But essentially you will get the data in some binary form. Check the ADO documentation. It may come through as a BSTR*. Hope this helps. Re: blob data question Giles7-Aug-02 8:24 Giles 7-Aug-02 8:24  Yep, try ADO, open a connection, and recordset, and use AppenChunk, and GetChunk methods for BLOB's . try out this article for a very well implemented class wrappers for all the COM stuff in C++ - http://www.codeproject.com/database/caaadoclass1.asp[^] Giles

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