C / C++ / MFC

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CSV file databases and DAO John Clump9-Jun-02 21:03 John Clump 9-Jun-02 21:03  Hi everyone. I have a program which opens and writes to MS Jet databases using DAO. I want to be able to open a table in a Jet database and convert it to a CSV (comma separated value) database. MSDN says you can use DAO to read/write to CSV databases, but I cannot find any examples on how to do this. Do you use it just like Jet database? Any help is greatly appreciated! Re: CSV file databases and DAO Nish Nishant9-Jun-02 21:19 Nish Nishant 9-Jun-02 21:19  A CSV file can be created straight huh? Just separate your fields with commas and each record ends with a cr-lf. Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me Re: CSV file databases and DAO John Clump10-Jun-02 20:34 John Clump 10-Jun-02 20:34  I could do that, and still might. Creating the file isn't too bad, but parsing it back out will be a chore, possible to do but a chore. I was hoping DAO could read the file back for me. Oh, well ActiveX in MDI application 9-Jun-02 20:45 9-Jun-02 20:45  I created an ActiveX (with MFC) selecting "Invisible at runtime" in the wizard. This control manages a communication via serial port. In my MDI application I added the ActiveX to some dialog windows and all works fine. Now I need a background communication (without any dialog windows). How can I use my ActiveX ? I try to add in "CMyApplicationApp" class the declaration "CMyActiveX m_MyActiveX" (like the wizard does in "CMyDialog") but when I try to access any method I have an ASSERT error (line 345 of winocc.cpp). The line in winocc.cpp is: ASSERT(m_pCtrlSite != NULL); // not an OLE control (not yet, at least) Can anyone help me ! Thanks Paolo Re: ActiveX in MDI application Rama Krishna Vavilala10-Jun-02 1:17 Rama Krishna Vavilala 10-Jun-02 1:17  ActiveX controls require a container. Just make it a regular COM component. This will solve your problem. Setup problem gago9-Jun-02 20:22 gago 9-Jun-02 20:22  How can my C++ project setup file ? Re: Setup problem Mazdak9-Jun-02 20:34 Mazdak 9-Jun-02 20:34  gago wrote: How can my C++ project setup file ? There is an installsheild with visual studio.net/6 Mazy "The more I search, the more my need For you, The more I bless, the more I bleed For you."The Outlaw Torn-Metallica Re: Setup problem Nish Nishant9-Jun-02 20:34 Nish Nishant 9-Jun-02 20:34  As Mazy already said you can use Installshield. But if that's too complicated for you I suggest Inno Setup which is an easier tool to handle Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me Re: Setup problem Mazdak9-Jun-02 22:06 Mazdak 9-Jun-02 22:06  Nish - Native CPian wrote: I suggest Inno Setup which is an easier tool to handle I don't know about this tool Nish.Is that something free to download? Mazy "The more I search, the more my need For you, The more I bless, the more I bleed For you."The Outlaw Torn-Metallica Re: Setup problem Nish Nishant10-Jun-02 1:00 Nish Nishant 10-Jun-02 1:00  Mazdak wrote: I don't know about this tool Nish.Is that something free to download? http://www.jrsoftware.org/isinfo.php Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me Re: Setup problem Mazdak10-Jun-02 3:25 Mazdak 10-Jun-02 3:25  Thank you Nish. Mazy "The more I search, the more my need For you, The more I bless, the more I bleed For you."The Outlaw Torn-Metallica Re: Setup problem Mazdak10-Jun-02 3:37 Mazdak 10-Jun-02 3:37  Nish when I go to that site download links do not work.Have you test them recently? Mazy "The more I search, the more my need For you, The more I bless, the more I bleed For you."The Outlaw Torn-Metallica Re: Setup problem Nish Nishant10-Jun-02 4:12 Nish Nishant 10-Jun-02 4:12  Mazdak wrote: Nish when I go to that site download links do not work.Have you test them recently? Try the 2nd US link :- http://www.jrsoftware.org/files/site2/is32.exe Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me Re: Setup problem Mazdak10-Jun-02 4:49 Mazdak 10-Jun-02 4:49  I tried all of thwm Nish. It doesn't work. Mazy "The more I search, the more my need For you, The more I bless, the more I bleed For you."The Outlaw Torn-Metallica Re: Setup problem Rene De La Garza10-Jun-02 5:06 Rene De La Garza 10-Jun-02 5:06  Use Inno SetUp with Script Maker and its pretty easy you can find it here http://www.tafweb.com/scriptmaker.html Reading bitmap pixel's coordinates and storing in an array ashish ambasta9-Jun-02 19:55 ashish ambasta 9-Jun-02 19:55  We have a paper graph (it is a waveform drawn on a grid) - like the one we used to do in our schools.(Assume that X axis represents t-time and Y axis represents v-voltage). We take the bitmap image of the same. Now we want to extract only the waveform out of this (not the grid both are of different colors) and we want to extract this waveform as a series of (X,Y) co-ordinates. This (X,Y) needs to be sampled at every delta-t. This delta-t needs to be configurable (and should not be limited to screen/monitor's pixel length/width - this is what I meant by digitization independant of pixels). I want to save this whole waveform into the database as a series of (X,Y)'s instead of storing it as an image Re: Reading bitmap pixel's coordinates and storing in an array Paul M Watt9-Jun-02 21:19 Paul M Watt 9-Jun-02 21:19  The best that you are going to be able to do is the pixel resolution level if you are dealing with a bitmap. What you could do though, and I am not sure how this will affect your data, but you could interpolate between the pixels in order to get a finer resolution, but this will not change your overall values that much. Something that is a little more complicated, but will give you better results is curve fitting. If you are going to do this, I would recommend a tool like MatLab. Build a man a fire, and he will be warm for a day Light a man on fire, and he will be warm for the rest of his life! Re: Reading bitmap pixel's coordinates and storing in an array ashish ambasta9-Jun-02 22:05 ashish ambasta 9-Jun-02 22:05  The first question is how do I read and store the coordinates of the pixels in the database or array? Re: Reading bitmap pixel's coordinates and storing in an array Phil Speller10-Jun-02 3:59 Phil Speller 10-Jun-02 3:59  Am I correct in assuming that you are taking a waveform drawn on gridded paper, scanning it and storing that image in a graphic file of some format? In any case, you are going to have to examine the contents of that image file or load the image into memory and examine that. You will need to devise an algorithm to pick out pixels of the correct colour. This in itself is going to be an interesting exercise, especially if it is a scanned image - for any single pixel wide vertical slice through that image I would expect more that 1 pixel to be set. You are also going to see a slightly varying range of colours (or even intensities if you've scanned in monochrome). The paper image being scanned may not be perfectly aligned with the scanner (i.e. the scanned image will be slightly rotated). You will have to distinguish between the actual waveform, axis, any other lines/blemishes or artifacts that appear during the scanning process. Free Intializing combo box/control in CFormView aldeba9-Jun-02 19:58 aldeba 9-Jun-02 19:58  Where do i initialize the combo box/control in a CFormView when i'm using a Doc/View architecture? I would need to set some default values in the combo box or other controls. Thanxs! Re: Intializing combo box/control in CFormView Mazdak9-Jun-02 20:03 Mazdak 9-Jun-02 20:03  After you define controller for it I think constructor is the correct place for it. Mazy "The more I search, the more my need For you, The more I bless, the more I bleed For you."The Outlaw Torn-Metallica Re: Intializing combo box/control in CFormView Nish Nishant9-Jun-02 20:33 Nish Nishant 9-Jun-02 20:33  aldeba wrote: Where do i initialize the combo box/control in a CFormView when i'm using a Doc/View architecture? OnInitialUpdate Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me Re: Intializing combo box/control in CFormView aldeba9-Jun-02 21:01 aldeba 9-Jun-02 21:01  I'm not sure why, but OnInitialUpdate is not being called. Set a breakpoint there, but there was no break. My program works such that, when i click on a button the view will change. Thus OnInitialUpdate should be called rite? The problem is that i used the resource editor to create the FormView and placed all the controls there. And i'm unable to initalize it. Is it possible that i would need to use m_myComboBox.Create(......); and not be dependent on MFC to initalize the window that the combo box belong to? Thanxs! Re: Intializing combo box/control in CFormView Nish Nishant9-Jun-02 21:12 Nish Nishant 9-Jun-02 21:12  aldeba wrote: My program works such that, when i click on a button the view will change. Thus OnInitialUpdate should be called rite? In that case put it inside OnUpdate() Nish Author of the romantic comedy Summer Love and Some more Cricket [New Win] Buy it, read it and admire me Re: Intializing combo box/control in CFormView aldeba9-Jun-02 21:32 aldeba 9-Jun-02 21:32  Nope, no response for breakpoint in OnUpdate()..

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