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As far as I understood, the exception is the problem (first line)...
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Cedric Moonen wrote: As far as I understood, the exception is the problem (first line)...
It is, but don't tell anyone.
The experience you get from following the wrong track because you didn't read the debugger output is also priceless. 
First-hand exceptions rarely stops the execution, it just put an informative line in the debug output so I guess it's still about the memory leaks.
But I've guessed wrong before... 
"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown
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it can be step trough with the help of debugger , but it seems you
have multiple threads , so you need to have breakpoints .
also i recommand you to use try catch to avoid exceptions .
Check your thread function , before they exit you
are not deleting some memory allocated in the thread .
Vikas Amin
My First Article on CP" Virtual Serial Port "[^]
modified on Thursday, July 24, 2008 5:33 PM
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Hi,
I am working on an MFC application where on click of a button some data is being fetched from the server and being diplayed in a CListCtrl
But as the data is coming from the server there is a bit of flickering.
So want i want to show a progress bar showing the message that the data is being loaded.
once data is displayed it should show message done.
Please help me.
Dhiraj
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Dhiraj kumar Saini wrote: Please help me.
Since you are using MFC, have you looked at CProgressCtrl?
"Love people and use things, not love things and use people." - Unknown
"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch
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as far as flicker is concerened i think u r repopulating the list control again and again in a loop, this creates flicker, if this is the case create a flag variable and append only the latest data and not the whole data again and again.
--------------------------------------------------------------
if u want to use progress bar then u should know the total amount of data which u will receive from server that will be max limit 100% for progress bar. Increament the bar depending on amount of data received at each time. if u dont know total amount of data then simply display some animation untill process is finished.
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Hi,
Actually the data received from the server is not fixed and is dynamic.
Can you give me any code of using a CprogresCtrl
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what does the handle types exactly means...
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it is a unique identifier for an object that the OS can manage/handle... hence its name
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Reference : MSDN web pages
The [handle] attribute specifies a user-defined or "customized" handle type.
User-defined handles permit developers to design handles that are meaningful to the application. A user-defined handle can only be defined in a type declaration, not in a function declarator.
A parameter of a type defined by the [handle] attribute is used to determine the binding for the call and is transmitted to the called procedure.
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manju23reddy wrote: what does the handle types exactly means...
A handle only makes sense to the module that created the handle.
Any client must not interpret the value of the handle, it's only use is to identify something that the library is operating on.
This is not specific to MFC or any other framework/library.
The data type HANDLE is usually a typedef'ed void*, which means that it is as wide as the processor architecture it executes in. An explicit type cast can be made inside the library without losing precision or bits to e.g. int.
"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown
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Windows OS keeps track of resorces (Menus/windows) by giving them a unique number this numer is called a handle. to play with any resourse u need to refer that handel just like to post a latter u need an address.
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You already got couple of good explanations about handle. As an add-on information, have a look at this article - Give Me a Handle, and I'll Show You an Object[^]. It will give you more info about handles.
Regards,
Jijo.
_____________________________________________________
http://weseetips.com[ ^] Visual C++ tips and tricks. Updated daily.
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Hi,
I have created the setup package using Inno Setup.But i need to install a driver before the exe file execution. Is it possible?
Thanks & Regards
Anitha
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What do you mean by "install a driver"? Is there a separate installer for the driver? You may execute it from within your setup then. Inno supports registering type libraries, DLLs, and OCX files, allows you to create registry entries and shortcuts, etc.,
What exactly is your need? A little more clarity, may be?
Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche
.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]
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Inno Setup does not include a driver installation feature.
If the driver includes its own installer, you can run that from within your Inno Setup install using the Exec() function in script.
If the driver doesn't include its own installer, you will need to write a DLL that uses the Setup API to install your driver.
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Hello everyone,
Just two bacis questions about how to program in an elegant way.
1. About string.find, whether using string::npos or -1 to check no match find is more elegant?
2. About string.substr, whether checking return value is null or not is an elegant way to know if substr method is successful?
thanks in advance,
George
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1. About string.find, it would be elegant to use string::npos instead of -1.
2. About string.substr, Actually it return basic_string and this class has a function called empty which returns true if the string object contains no characters; false if it has at least one character. I guess this would be good practice.
Regards,
Pankaj Sachdeva
There is no future lies in any job but future lies in the person who holds the job
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Thanks Karismatic,
1.
Karismatic wrote: 1. About string.find, it would be elegant to use string::npos instead of -1.
Why? More words please?
2.
I have performed more experiments, is it more correct to handle out of range exception? I found if the parameter is not legal, out of range exception will be thrown. I am surprised why each possible exception from substr method is not documented in MSDN?
regards,
George
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"Elegance" has nothing to do with your questions. You need a choice between several syntactically correct choices before you can start thinking about coding "elegance".
1. string::npos is correct, -1 is wrong.
2. string::substr throws an exception if it fails. It will never return NULL (assuming your STL implementation isn't broken).
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Thanks markkuk,
1.
Why -1 is wrong? From definition it should be the same as npos, any comments?
2.
About the exception, I am surprised why each possible exception from substr method is not documented in MSDN? Where could we find what exceptions will be thrown in a specific STL method?
regards,
George
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Good afternoon!
lets assume that my computer has following ports
COM1, COM2, ....COM11, COM12, .. COM20.
now i have connected a Pendrive in COM1, a Printer in COM11.
so how can i get list of all other free ports such as COM2,COM3 ...Com10
COM12, COM13...COM20 programmatically?
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You can find it here[^]">
Regards,
Rane
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Can u please suggest some simple ways or some msdn library functions
that will do the work , i need them in visual c++.
-thanks
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What's wrong with Rane's suggestion?
"Love people and use things, not love things and use people." - Unknown
"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch
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