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Re: MultiByteToWide does not work without printf??? Zac Howland17-Aug-06 5:58 Zac Howland 17-Aug-06 5:58  Do'h! Part of it was a typo on my part: size_t wStrSize = strlen(argv[1] + 1); should read as: size_t wStrSize = strlen(argv[1]) + 1; If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week Zac Re: MultiByteToWide does not work without printf??? fvandun17-Aug-06 6:07 fvandun 17-Aug-06 6:07  Thanks! That did it. Francis Limited Users Dave Kerr17-Aug-06 4:58 Dave Kerr 17-Aug-06 4:58  Hi, Can a namespace extension be installed on a limited users account? To install one only accesses the HKEY_CURRENT_USER part of the registry (as far as I remember) so does this mean that they can be installed? Thanks in advance Dave Kerr codechamber@hotmail.com http://www.codechamber.com Microsoft Access Database Import to VC++ Windows Forms Nokoff17-Aug-06 4:56 Nokoff 17-Aug-06 4:56  Hi there guys, I am currently trying to achieve a seemingly simple task in VC++ 2005. I have made a very simple form in Microsoft Access which I wish to serve as the beginnings of something greater. I created a db in MS Access named links.mdb containing on table-> Table1. Table1 contains 1 column, "Links", and i wish to read these strings into variables in my Visual C++ Windows Forms Application. What I have done so far... In Visual C++, I clicked on Data->Add new data source, and followed the wizard to add the microsoft access database to my application by the name, "linksDataSet". I can see the table in my left hand "Data Sources" pane in VC++. All I need to know is how to access my database from here so that I can read these strings stored in my table. Also, would be possible to schedule my application to log on to a http server and retrieve these links every time the application is executed? How would I go about doing this? Thank you very much for your time Regards Linden. Re: Microsoft Access Database Import to VC++ Windows Forms cje17-Aug-06 5:15 cje 17-Aug-06 5:15  the sounds like you are using managed code - are you posting in the correct forum or are really using VC++/MFC? cje Windows Directory si_6917-Aug-06 4:49 si_69 17-Aug-06 4:49  Hi Can anyone tell me the best way to obtain the windows directory and drive thanks Simon Re: Windows Directory Dave Kerr17-Aug-06 4:56 Dave Kerr 17-Aug-06 4:56  Look up SHGetFolderPath in the documentation and use the flag 'CSIDL_WINDOWS', this will get you the path to the windows folder (typically c:\windows). Always use SHGetFolderPath for special folders like My Documents, Program Files and so on. It's a bit of an ugly function so I'd wrap it in something a bit cleaner that returns a string. Dave Kerr codechamber@hotmail.com http://www.codechamber.com Re: Windows Directory Michael Dunn17-Aug-06 13:23 Michael Dunn 17-Aug-06 13:23  CSIDL_WINDOWS was only recently added to the CSIDL_* list. Use GetWindowsDirectory() to have your code work on all versions of the OS --Mike-- Visual C++ MVP LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ Re: Windows Directory Hamid_RT17-Aug-06 6:32 Hamid_RT 17-Aug-06 6:32  See GetWindowsDirectory WhiteSky Re: Windows Directory G_S17-Aug-06 13:29 G_S 17-Aug-06 13:29  UINT GetWindowsDirectory( LPTSTR lpBuffer, // buffer for Windows directory UINT uSize // size of directory buffer ); G_S Using Spy++ in Visual Studio 2003 Jethro6317-Aug-06 4:40 Jethro63 17-Aug-06 4:40  Hi: Does anybody know of a good tutorial or getting started resource for using the "Spy++" tool that comes with Visual Studio? I have a problem with a MFC application which I suspect may be traced if I can look at the Windows messages being shot through my application. However, every time I fire up Spy++, I end up throwing up my hands in dispare. Specifically, I would like to know how to identify which window I should be watching from the enormous list of windows that are listed in the "Windows" window. Its not obvious and I often find that the name of my application appears embedded in three or more of the entries in the listing. Then, I would like to know how to isolate messages that are being directed to specific windows and possibly even narrow this to specific controls. Do people find "Spy++" useful? Or are there better ways to debug problems? Thank you, Mark Re: Using Spy++ in Visual Studio 2003 G_S17-Aug-06 4:53 G_S 17-Aug-06 4:53  Spy++ is a great tool First of all start the application directly meaning not executing it through VC++. Second a better approach is to list processes it is simply easier to find your exes name then open up the tree you'll see all the threads if mulitple scan the threads for the window/control your looking for right click the window/control you want and click messages you'll see messages that window/control receives to isolate messages click on logging options on the toolbar or just click CTL+O there you have what kind of message tracing you want. G_S Re: Using Spy++ in Visual Studio 2003 Jethro6317-Aug-06 7:35 Jethro63 17-Aug-06 7:35  Thanks G_S. I did try starting my program away from the IDE and it certainly was easier to isolate my application and also its sub-controls and lok at only the messages I was interested in. Alas, I still have not figured out what keeps repainting my custom control... Cheers, Mark Re: Using Spy++ in Visual Studio 2003 Dave Kerr17-Aug-06 4:53 Dave Kerr 17-Aug-06 4:53  Hi Mark, By far the best way to debug (although this depends on preference and opinion) is to just the visual studio debugger, and step through code that you need to test line by line. Get familiar with breakpoints and 'step in/step out' for functions. The debugger is powerful enough for you to walk through code as it is executing, line by line, make changes on the fly and compile them back into the running program. If you notice a line of code didn't work the correct way, you can change the line, compile the changes, tell the debugger to step back to that line and execute it again. You can keep on doing this until you've got the code correct. This line by line debugging will also greatly ease your use of spy- because when you step over a line of code you'll probably only end up sending one windows message (or none at all), and you won't get the floods of mouse messages. Try using Winspector Spy (a free tool on the net), it corrects some of the most common quibbles with spy++. In terms of using spy itself, the most useful feature is under 'Search>Find Window'. You can drag the Finder tool over the window you want to spy on and it selects it for you automatically; very useful if you need to find a window such as a statusbar which may not have a caption. When watching windows, go to the 'logging options' and make sure you're not logging mouse messages, paint or nc (non-client) paint messages, otherwise you tend to get a continuous flood of nonsense. So whilst watching a window you are debugging step-by-step, you can generally see what's going on. The only limitation of the step-by-step debugging is that it doesn't do windows messages well, because they go through a message pump etc which makes stepping in and out of those functions very complicated. For checking dodgy code though, the debugger should be your first check, get comfortable with it, it's an extremely powerful tool. Hope this helps Mark Dave Kerr codechamber@hotmail.com http://www.codechamber.com Re: Using Spy++ in Visual Studio 2003 Jethro6317-Aug-06 5:10 Jethro63 17-Aug-06 5:10  Hi Dave: Thanks for your response. I guess I should have been a little more specific about the kind of problem that I am having. I've been using Visual Studio for years and, yes, the line-by-line debugger, stepping in, stepping over, breakpoints and the various watch windows is always my first recourse when debugging and testing. My problem is that I suspect that there are windows messages being issued that I am unaware of and might be working against me. Sounds like conspiracy theory, I know, but the Reader's Digest version of my problem is that I am trying to customize a control. It is user drawn. In "DrawItem", I am painting the control's background a certain colour, when I step through and view this procedure, I can see that the "DrawItem" procedure is indeed painting the background. But as soon as I allow the program to continue, some other entity is un-painting my background. I assume that this is a Windows message that I had not anticipated. This is why I would like to see what messages are being issued. Am I correct in assuming that it is the WM_PAINT message that is eventually calling the "DrawItem" procedure? Or have I misunderstood? Anyway, that is my story. I do not know if Spy++ would help me here or not but I have been spinning my wheels here since late last night and I am willing to try anything at this point. Thanks, Mark Re: Using Spy++ in Visual Studio 2003 Dave Kerr17-Aug-06 7:23 Dave Kerr 17-Aug-06 7:23  Hi Mark, OK- I thought it was a much more general question, I didn't mean to sound patronising to someone who's been using studio for years! First things first- make sure you are handling the WM_ERASEBKGRND message and returning FALSE- otherwise during the drawing sequence the system will try and erase the control's background. This sounds like the most likely problem. If it's more complicated custom drawing you're doing, such as list items in list controls, then look in the documentation for how to set the background. For example as far as I can remmeber with things like tree controls, to customise the tree items background, you handle the custom draw notification, but don't erase the background, you set the background colour in the passed device context to what you want, and then the system erases it for you. So if the background is being unpainted, check for the WM_ERASEBKGRND message and make sure you handle it, and for tree/list/more complicated controls, make sure that to change the background you're setting the correct variable in the device context. If none of this works and spy doesn't pick up any cheeky little messages being boosted around without your knowledge, then it might be worth posting the explicit problem somewhere and seeing if it's been encountered before... Good luck, dave Dave Kerr codechamber@hotmail.com http://www.codechamber.com Re: Using Spy++ in Visual Studio 2003 Jethro6317-Aug-06 7:33 Jethro63 17-Aug-06 7:33  Thanks Dave. That sounds like a likely suspect. I am not currently handling WM_ERASEBKGRND. Cheers, Mark Don't know about proxy classes huachinango17-Aug-06 4:37 huachinango 17-Aug-06 4:37  Hi, I'm trying to use the "Reference Counting" technic and the "Copy on write" technic, so a "MyString class" can be able to have it's own simulated Garbage Collector. My problem is when I try to overload this operator "[]", for example: MyString s1(L"HELLO WORLD"); wchar_t * pwc = &s1[1]; wchar_t ch= s1[2]; I need a way to find out if the operator [] is being "called" to make a refence of the object s1: &s1[1]; or if the operator is being called just to return a copy of the wchar_t value contained in the object s1: wchar_t ch= s1[2]; Developer Re: Don't know about proxy classes Zac Howland17-Aug-06 4:49 Zac Howland 17-Aug-06 4:49  Check out how CString overrides this operator. It actually has 2 overrides for it (one that is const, and ones that allows for the item to be changed). If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week Zac utilcls.h and comobj.hpp files great_tommy17-Aug-06 4:12 great_tommy 17-Aug-06 4:12  Hi, I was advised that these files are part of the Borland c++ comiler. I have downloaded the comiler, but these files are not there and I need them. How can I get them?? Thanks a lot! Re: utilcls.h and comobj.hpp files toxcct17-Aug-06 4:29 toxcct 17-Aug-06 4:29  what is your compiler now, and what do you need exactly ? there is certainly an alternative to what was inside those header... TOXCCT >>> GEII power [VisualCalc 3.0  updated ][Flags Beginner's Guide  new! ] Re: utilcls.h and comobj.hpp files great_tommy17-Aug-06 4:35 great_tommy 17-Aug-06 4:35  I am using Microsoft Visual c++. I need those headers to programatically create a Microsoft Word file with a coulpe of lines of text in it. Re: utilcls.h and comobj.hpp files toxcct17-Aug-06 4:48 toxcct 17-Aug-06 4:48  can't you use a Word automation ? TOXCCT >>> GEII power [VisualCalc 3.0  updated ][Flags Beginner's Guide  new! ] Re: utilcls.h and comobj.hpp files Cedric Moonen17-Aug-06 4:48 Cedric Moonen 17-Aug-06 4:48  This is totally useless as you will need to link to a specific library and that won't work probably. Instead, take a look at word automation (that is the way to go). There is some usefull articles here[^] Cédric Moonen Software developer Charting control Re: utilcls.h and comobj.hpp files great_tommy17-Aug-06 4:57 great_tommy 17-Aug-06 4:57  Thank you both for your answers. I am not an experienced programmer and the reason I wanted to use the other files is, beacause I cannot find a good, simple example on how to do what I need with Word automation.

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