Comments by Addy Tas (Top 102 by date)

I'm wondering if you could be managment material.... trying to make other people work for you is in general not a bad idea. In general also means that sometimes it's a bad idea, homework is needed to learn something. Even if you do not reach the correct answer, you will learn from trying.
Good luck with your assignment and one small remark; don't think to hard, it's really not that complicated. Take it all one step at a time!

I think this really is a lot better than the previous attempt, showing this i'd give you a try. Naturally you could still extend the example using the factory pattern (know the GOF!!!) but that might take it over the top. As another suggestion that is not related to any OO but more to the coding styles I'd make const's of the magic numbers, taking the magic out, use CamelCase on all the method names (computeSalesTax). I really don't like classes in classes but that might be just me. You may like the internal class declaration here.
One thing that could still use a brush-up is that the shopping cart currently takes care of it's presentation, seperating the BL and it's presentation is always a step forward(unless you don't have to maintain the code :) )

My two cents for now,

Cheers, AT

hi,

Yes You should cast the address of the double to a different size.
so pCh = (char*)&dblFreeBytes; should work

I would say that once you have moved the timer to the class and the start/stop from the connect/disconnect (as suggested below) you should at least get a timer tick (tried a breakpoint?) And if that's working you can move on to the next step; why won't it show up int the listbox...

by the way; you'd also help yourself if you move the event subscription to the class.

Hi,

Just to be sure; is the firewall turned off on both sides of the line?
Is a regular Ping working?

Hi, I can see many issues in your code; among them are the continuously (re) subscribing to the OnNewData Event, the strange duplicate code of the TimerElapsed / ProcessBuffer. What's also rather odd is that you seem to have a member variable that is called buffer and you pass buffer as a parameter to the ProcessBuffer.
as the Connect button is disabled after the first click on Connect I also suspect that you've not posted all the code of the Disconnect.

By the way; be careful of using magic numbers.

Are you sure that the Connect is actually called on the second try?
Is the Port receiving any data?

Cheers, AT

You have not posted the disconnect code, this may very well give a clue.

Hi,

If this is all working for you be so kind to accept / upvote the answer so the item will no longer appear on the open issues.
If you have more questions; all you need to do is ask :)

Cheers, AT

Hi,

You are entirely right; TCHAR is defined in the pre-compile stage which makes runtime changes a bit... well odd.
TCHAR can be really handy for having code that can work single and MBCS or Unicode but better make sure you know what you're doing or you might be accessing something that's not there.

Cheers,

AT

Hi,

Now I knew you were going to mention and kind of wanted to put this in the previous comment but as it is always nice to have a constructive argument:

Check out line 168 in the tchar.h, just a couple of lines above the TCHAR definition, then the the #else is @ line 838 followed by the char definition on line 1246.

Your example seems fine at first but you have to remember also to undefine the _TCHAR_DEFINED to change the type of the TCHAR.

Cheers,

AT

Hi,
To argument is always good (unless you need to catch a train) as it is an opportunity to lean something.
I took the following from winnt.h (VS 2005) so it seems that my TCHAR is still one byte.


#ifdef UNICODE // r_winnt

#ifndef _TCHAR_DEFINED
typedef WCHAR TCHAR, *PTCHAR;
typedef WCHAR TBYTE , *PTBYTE ;
#define _TCHAR_DEFINED
#endif /* !_TCHAR_DEFINED */

typedef LPWSTR LPTCH, PTCH;
typedef LPWSTR PTSTR, LPTSTR;
typedef LPCWSTR PCTSTR, LPCTSTR;
typedef LPUWSTR PUTSTR, LPUTSTR;
typedef LPCUWSTR PCUTSTR, LPCUTSTR;
typedef LPWSTR LP;
#define __TEXT(quote) L##quote // r_winnt

#else /* UNICODE */ // r_winnt

#ifndef _TCHAR_DEFINED
typedef char TCHAR, *PTCHAR;
typedef unsigned char TBYTE , *PTBYTE ;
#define _TCHAR_DEFINED
#endif /* !_TCHAR_DEFINED */

typedef LPSTR LPTCH, PTCH;
typedef LPSTR PTSTR, LPTSTR, PUTSTR, LPUTSTR;
typedef LPCSTR PCTSTR, LPCTSTR, PCUTSTR, LPCUTSTR;
#define __TEXT(quote) quote // r_winnt

#endif /* UNICODE */ // r_winnt

Almost forgot; the TCHAR can be either one or two bytes of size, this depends on if you have _UNICODE defined. In the VS project settings you have a entry for use TCHAR as....
If you use TCHAR in one place, make sure that all the manipulation calls (strlen etc.) reflect the same.

Cheers, AT

Make sure to replace the sizeof(log) by a strlen(log); you're now writing the sizeof pointer to the file.

most of the time the firewall is to blame for this and as there is not much to go on here i'll leave it at that; check the firewall settings.

As far as i can tell this will not compile, am i right or do you get a runtime error?

Have you tried Dependency checker from the sysinternals suite?

If i read the story correct, your biggest issue is that the components (or partsof them) are not transpartently drawn on screen. It might help if you specify what you use for drawing.

Hi,

This is what you want to know: http://msdn.microsoft.com/en-us/library/yd4f8bd1(v=vs.71).aspx

Cheers, AT

Naturally i can't give you a 100% answer but I'll give it a try.
Option one: you have another copy of the dll next to the exe.
Option two: there is another copy of the dll on a location that is earlier in the Systems Path
Option three: you copy the output to the exe's location. Running this version is ok but without the symbols file the debugger can't really do with it.

I guess these are my two cents for now...

If you feel like it; don't forget to upvote :)

Cheers, AT

Seems a bit late but i figured; while I'm reading it, why not fix the link.
Cheers, AT

The question could be an interesting one; when i read the first few lines i start thinking about these nasty weather prediction issues but then... you loose me completely and i have no idea what way you are going. Please elaborate on your question.

Naturally i could not resist that :)

I wonder if he could hear the bell ring :)

I wonder if a guy from the US is going to get monty python-type of humor..
On topic: Any useful exit code in the output window?
Have you tried running it while catching all exceptions when thrown?

Hi, thanks; that saves me the time. I kind of get the feeling that this guy is making others work for him. It would seem that he does not use google and does not read these articles.

I seriously hope for you that 99.99% of the xaml was auto generated.

Sounds nice but i don't really want to post my email in a forum, if you don't have any trouble with that; just post your email and i'll send you a message. If you post your email now, i can still respond for close to half an hour before i go to bed. Then, once you got my mail you can edit your reply to remove your email addres from the forum.

Have you tried an intermediate step by going from c++/cli -> native c++ -> native c? If so at which step did you not get what you expected?

As far as i know there is no way to send a personal email from within CP, you may google my name and see if you can use my linked-in account for this. Other than that... I'm open for suggestions.
Cheers, AT

Hi, indeed it has been a little while but as you no doubt know, all slows down at the end of the year. I'd like to give you a hand but you gave me rather little to go on. I could think of a number of patterns(came to 6 alternatives) of what exactly you meant and could do. As i'm a bit to lazy to elaborate on all of them i'd like a bit more info :)
One thing i was wondering about is if you had written down a (normal) program flow. You no doubt have it in your head but in my experience writing it down really clarifies stuff.

My 5.

Hi, I already figured out that it would come down to something like that. The nasty part of this is that I wanted to have a destructor that automatcally cleaned up the allocated mem when it goes out of scope or is deleted.
So once and a while i get so used to the comfort of C++ ( or better yet c#) that i can't figure out why we had to do everything manually in the (not so) distant past.

Thanks, AT

maybe a stupid question but; why? If you need to store something as a service you can always use the HKLM. if you need the HKCU you'll kindly need to ask the user for a token so you can impersonate him (see ImpersonateLoggedOnUser) but when you are doing that you might as well have a process running in the users space that can access the HKCU....

what; no upvote? You found it acceptable but iffy?

It seems that your answer is the only answer and therefore must be the acceptable answer. Normally I don't add constructors to structs but in this case it seemed that as the struct is already used all over the place and the BSTR DeviceName is causing a mem leak I figured that init the value might already help, then on destruction free the mem. Guess I have to do this manually all over the place.

Anyway; thanks for the answer.Cheers, AT

Hi,
I kind of wanted to leave you a little challenge and... Yes I'm kind of curious of what you really try to accomplish. I could also be a real nice guy and tell you a little about coding guidelines, why they exist and what you get from them... Maybe later :)
For now; a messagebox is incredibly easy in c#; all you have to do is: MessageBox.Show(theString).
Small note, if you can find me on linked-in you can send me a more direct mail, it would at least make it possible to be more elaborate on the why of things.

Cheers, AT

You are correct though i pointed out many things that could be wrong, the following is wrong.

char test[20];
CString apple(test);


I updated my answer accordingly.
Cheers, AT

Hi,

I could make a rather elaborate example here but... two min of googling (is that a verb) and i found something you which might be close to what you are trying to accomplish. see http://www.java2s.com/Open-Source/CSharp/Plugin/walkmeil/Microsoft/Samples/Debugging/Native/DumpReader.cs.htm
for refrence

Hi,

If you havn't figured it out by now this should really help you out; i've updated the answer again. Hope it'll make you happy.

Cheers, AT

Sorry, no facebook for me. You can find me on linked-in though

Hi, I'll try to help you out but I'm currently a bit short in time so to get you a proper responce might take till Sunday...
I think that if you look at the examples in the MSDN you should be able to figure out how to get it done.
Cheers, AT

Really easy; the proper way to do it would be to make a seperate class with some static methods wrapping the imports but... I sugest that you just put this above the method that is going to use it, then you can call it normally.
You will need to add the using of System.Runtime.InteropServices
Cheers, AT

Hi,
I did send you a mail a couple of days ago, did you get it or is there an spam filter working overtime?

Cheers, AT

Hi,

yes you may have my email address but... how to get it to you and not risk tons of spam... any suggestions?
If you can find me in any of the discussions you can send your email addess to me personally. That should work i guess.

Hi,

I've updated to add all the items in a CheckedListBox. From this contol you can use the CheckedItems to get a collection with the checked items.


Guess this should get you started :)
Don't forget to accept an answer if you think the answer is complete enough for the question.

Cheers,AT

Please cleanup the code dump and try to specify what does and what does not work
Cheers, AT

Hi, i am well aware of that; i also like the explanations on:
http://butunclebob.com/ArticleS.UncleBob.PrinciplesOfOod

Cheers, AT

My 5, the default example of OOP is shapes. Can't go wrong with that.
Cheers, AT

It would help if you'd specify what your expected output is, appart from differences in white spaces i don't see what you could skip and still have a sensible output. You can still discuss comments but i'm a bit inclined to say that if someone bothered to add a bit of comment, it might just be important enough to look at.
More info == better answer.

No idea why the hell i even sugested such a thing when i'm fully aware that you can remove the lines or even make them runaway from the ball. I guess it really is time to call it for today.
Sorry guys; sudden stroke of blondness.
Signing off for today, AT

Maybe a silly suggestion but what about overwriting the targeted line with the background?

Cheers, AT

You do know that sendmessage is a synchronous operation right? If you want to handle it async use the post message call. Next to that... Why P/Invoke?

Cheers, AT

Have you taken a look at Task<T>?

Could these machines have different language settings?
Cheers, AT

If this is the Siemens WinCC i'd suggest posting the question to them. I have played with it about five years ago(naturally not the 2008 version) but from the information you have provided here i don't think anyone can provide a substantial solution.
Cheers, AT

Have you looked at XPath and XmlDocument?
Cheers, AT

Add another thread for reading and validating the read data, then if you got what you want set a event; the other side (writer) needs to wait for the event before it does something.

To avoid any other issues; please make your design to also wait for an exit event and use a timeout to verify the current state / resend the command.

I can only agree with your comment; data sources always need to have a McCloud attitude :). There shall be only one!

Having two ways of retrieving the same information can (and will) lead to ambiguity... ehhh errors in case you might misunderstand...

Hi, I have updated your solution a bit, where can i send the result to?
Send me a mail with the details and I'll zip it up for you.
It would be nice to compair your code and my changes and see if you know which way i'm pointing. Some small pieces of advice:
- get familiar with naming conventions, if everybody names his stuff the same you can easily read / understand the code.

- Install the VS extention manager tools:
1) spellchecker :)
2) Productivity power tools
3) Solution explorer tools
3) Code alignment (just easy to have :) )

Hi,

I downloaded the App(s) which was, surprisingly enough, written in C#. Am I looking at the right thing here? all the items above were about VB.NET? Don't get me wrong, my experience in C# exceeds VB by a fair margin but... just a bit odd i guess.

Anyway; what should I be looking at?
btw; sorry about the late responce, got quite a nasty day today.

Next to the basics of inheritance; when building a ark of animals take a look at John's answer.
Be carefull that you only take one muskito though....

Cheers, AT

When Casting a non dog (e.g. Cat) to a dog you can expect a casting exception, using the as operator will make the result null if it's not a dog. However the as operator does not come cheap, as always safety comes at a price. Regular casting is really cheap but then again risking a exception might make you app unusable... I'd say only cast if the object really can't be anything but the expected type, if you happen to see an exception anyway something else is wrong in your app.

Cheers, AT

Hi,

I tested the changes I just made and this was working for me. as you might notice i put the data to the console instead of the txt box. You will need to do the invoking on that one yourself.

This should really make you happy. If this works for you; please upvote & accept the answer.

Cheers, AT

Is there a onload event or something like it being handled in the dlg? If so; when that does something nasty you may end up like this.

Hi,

Added the example to the answer, I guess that'll cover it.

Cheers, AT

Are you sure that the Selected index has changed? Are you using the code in the SelectedIndexChanged event handler?

Just tested the same and "it works on my PC" :)

5+ first think design, then think of fixing code

Hi,

Does the Testing form have a event that fires when / before it is shown? e.g. resize? If so; does it hang in that event?

I was missing the #include "PMatrix.h" with the rest of the includes. Adding this will make sure that the declaration of the class is know before the definition can be compiled.

Cheers, AT

You do not call the base when you don't receive a WM_WTSESSION_CHANGE. You will need to call it for anything that you don't handle.

Hi,

Did you make sure that you only omitted calling the base when receiving a WTS_SESSION_LOCK or WTS_SESSION_UNLOCK?

e.g.
protected override void WndProc(ref Message m) {

bool foundLock = false; if (m.Msg == WM_WTSSESSION_CHANGE)

{ int value = m.WParam.ToInt32();

if (value == WTS_SESSION_LOCK) {

foundLock = true;

OnMachineLocked(EventArgs.Empty); }

else if (value == WTS_SESSION_UNLOCK) {

foundLock = true;

OnMachineUnlocked(EventArgs.Empty); }

} if(!foundLock) base.WndProc(ref m); }

Have you checked to see if your outup is at the correct / mentioned directory? Did you add in all the dots in the path or is this copied?

Cheers, AT

Tricky stuff, i guess that if you are thinking about using the magic dynamic keyword; you should reconsidder your design. If you still end up at the same conclusion, talk to some one else... If you still think you need it, well ok as long as you keep it all in the same assembly. There is no way to track compatibility if you cross the assembly boundry.

Cheers, AT

5+; clear and safe explanation

5+; and yes, TryParse is a lot safer.

Rather complete, my 5

Not much to go on but if you suspect a failing app, have you tried the application dependency walker (depends.exe) to see if something is just not in place?
(http://www.dependencywalker.com/)

Regards, AT

According to the documentation you should call base.WinProc(ref m) only if you do not handle the message. would it not work if you'd just ommit calling the base in the two cases you'd like not to happen?

Short but complete answer. All you need to know is in there it seems.

I think I do understand what you want; all that you want is that the root of the result of "view files" is the managers own root, not the All data folder.
As i know little of ASP, I hope that my small clarification may help someone else help you.

You posted a serious amount of code, can't you narrow it down a bit? What exactly is happening?

Could you rephrase the question? Also make clear what exectly is not working. Does it not display correctly or do you get an exception of any kind?

Cheers, AT

I've not taken a look at it in detail but i think that what you are looking for can be found under the term "MySQL Triggers"

from http://dev.mysql.com/doc/refman/5.1/en/triggers.html
A trigger is a named database object that is associated with a table, and that activates when a particular event occurs for the table. Some uses for triggers are to perform checks of values to be inserted into a table or to perform calculations on values involved in an update.
A trigger is defined to activate when an INSERT, DELETE, or UPDATE statement executes for the associated table. A trigger can be set to activate either before or after the triggering statement. For example, you can have a trigger activate before each row that is inserted into a table or after each row that is updated

And yes this beats polling any time, depending on the system your efficiency may be a lot more than 10x.



Cheers,



Addy

From what i see all i can say is that it does not seem like you are using classes to organize your code and/or group intermediate results. But hey; you give little to go by.

Is the exception thrown on the line:
bool isChecked = ((CheckBox)row.FindControl("chkSelect")).Checked;

If so the row does now have the checkbox control or the control does not have the name chkSelect.

Damn, i thought that that part was also included in the free version. Sorry for wasting your time on that one.

Do you have a way of knowing if someone may have changed the contense of the db? If there is a service managing it, it may give you an event when touched. That would prevent even more nop's

If i'm reading it correctly you want to transform russian in english chars to russian chars to convert them back to english chars. Am i correct here? If so why don't you eliminate two transformations and be done with it?

Why would you do that? If you own the PC just take a bootable CD and take care of business, if you don't own it; don't touch it. Please make the world a better place.

Hi, looking at the code i was a bit suprised to see port 0 in the IPEndPoint as this means any available port. Make sure the data send from the client is send to a port on which the server is listening and visa versa.

Hope this helps, if not i'll take a closer look later.

With the abundance of missing information i can only guess that you are missing a ref to ws2_32.lib.

I thought this to be really interesting; especially as i'm builing a HTPC. As far as i can tell with the reading i've done so far the answer is: you can't... Or rather not directly. What you are looking for is getting access to the HDMI CEC bus. As far as i could tell the PC HDMI interface does not support direct access to the bus (maybe there are linux drivers that can). There are devices or DIY schemetics that split the HDMI to USB. Using the USB you can send or receive the CEC commands.

I hope someone has a way to directly access the bus from the PC's HDMI.

Regards Addy

Have you looked into sending keyboard events with a MapVirtualKey(...)?

the WinCE doesn't throw an exception; it just returns NULL on failure.
see: http://msdn.microsoft.com/en-us/library/ms923951.aspx for more info.

Hi, what error code do you get from GetLastError when CreateFile... failed? The error code might lead to the real issue here.