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Hi, Thanks for your quick answer. I tried same. Now I tried with your solution. Still it is not working.I am getting following error:
error LNK2001: unresolved external symbol "public: void __thiscall test::func(enum test::FileMode)" (?func@test@@QAEXW4FileMode@1@@Z)
Debug/single.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.
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There is no definition of test::func in posted code (there is only its declaration). Did you forget it?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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Oh! Yes.Thanks. It is working now.
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If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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This is telling you that the Linker can't find the implementation of test::func( test::FileMode ); the function you're trying to call. T
he simple cause of this might be that you haven't actually written it yet, more complex possible causes include that it exists somewhere the linker can't find it or the linkers incremental stupidity counter has wrapped around its 16bit vlaue limit and you just need to give it a good kicking and make it try again.
"The secret of happiness is freedom, and the secret of freedom, courage."
Thucydides (B.C. 460-400)
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Oh!OOps my oversight.Thanks. It is working now.
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I try to write
CString stringLiteral = _T("this is a string containing "" ");
but the compiler give me "concatinating mismatched string" error
Please help
thank in advance
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easily,
before you want to use quates, place \
example :
("this is a string containing \"\" ");
thanks is it...
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
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Thankyou very much
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Hi all,
I am looking for a macro that in 1 click will prepare me a method documentation for all the methods in my cpp file. and all i have to do is to go over the documentation and complete the return type and what the function does...
thanks in advanced
Yaron
Interface basics click here :
http://www.codeproject.com/com/COMBasics.asp
don't forget to vote
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No macro that I know of but Google up "doxygen" and you will soon be able to do what you require.
"The secret of happiness is freedom, and the secret of freedom, courage."
Thucydides (B.C. 460-400)
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Hi
I have a no of LAN conneted computers operating in windows XP.I wish to make a s\w that can be installed in each computer so that by using this s\w poeoples using the computer can be able to chat(through ethernet interface).
I know that the softwares are already avaiable for that.But i wish to make one.
Can anybody send the relevant documents for studying this and any sample programs available..
thanks in advance..
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Did you read posting guidelines?
For instance:
-You should choose a meaningful title for your post.
-You should first try Googling for the answer [^].
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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Check out this wikipedia link: Comparison of instant messaging clients[^]. There are a number of open source applications in the list. You may want to pick up one, study how it is done and then start doing yours. But trust me, this would actually be more difficult than you think it could be. Good luck with the development.
PS: As CPallini pointed out, please give your post a meaningful title, something else other than "Help" or "Urgent pls".
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Rajesh R Subramanian wrote: PS: As CPallini pointed out, please give your post a meaningful title, something else other than "Help" or "Urgent pls".
Correct. Anyway: "plz plz more drugz urgent plz plz" is allowed.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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Have you ever worked with sockets before?
"Love people and use things, not love things and use people." - Unknown
"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne
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Hi,
I want to communicate multiple serial ports using my application.
I can able to do for a single port.
can anybody have the info for mutiple ports please share it.
Regards,
Sunil Kumar
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 What's the problem ? If you can do it for one port, just "reuse" the same code. E.g. the best is to put all the code in one specific class (you can find some of them on codeproject). Then you just reuse the class twice: one for port 1 and one for port 2.
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Thaks for the reply.
If i want to communciate with 10 ports, then i need to create 10 threads??
I want to communcate parallely.
All of them have only one receive function?
Regards,
Sunil Kumar
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sunilkumar.d wrote: If i want to communciate with 10 ports, then i need to create 10 threads??
Depends on how you are reading the data but it makes sense yes. Alternatively you could also use overlapped IO but it is a bit more complicated to do. In overlapped IO, you have an event for each port that gets notified when data comes in. Then you could wait for 10 events at the same time in one thread.
But both solutions are fine and it depends also what you need to achieve...
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sunilkumar.d wrote: If i want to communciate with 10 ports, then i need to create 10 threads??
depends on your protocol... RS485 allows multiple drop points, you have only one port to read each drop point is addressed.
RS232 you would need a way to read each port seperately so 10 threads might be the answer.
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how to handle Vertical scrollbar in a dialog bar.
If Suppose i am having a 30 Buttons in a dialog Bar which is align vertically and Display of 30 buttons are crossing the height of the screen.Then how to display them with the help of Vertical scroll button
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There is quite a lot of resource on that subject, just search a bit (on CP or google). Here[^] is an example of a helper class for instance.
And here[^] is a tutorial on the MSDN website.
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error C2248: 'query' : cannot access protected member declared in class ' DerivedDialog'
Pls advice
.H
class DerivedDialog : public BaseDialog
{
// Construction
public:
//controlling function header
static UINT OnSearchButton(LPVOID param); // Thread function
typedef struct THREADSTRUCT //structure for passing to the controlling function
{
CDemoDlg* _this;
} THREADSTRUCT;;
....
}
.CPP
call:
THREADSTRUCT *_param = new THREADSTRUCT;
thSerOper=AfxBeginThread(OnSearchButton,_param);
UINT AssetSearchDialog::OnSearchButton (LPVOID param)
{
THREADSTRUCT* ts = (THREADSTRUCT*)param;
ts->_this->query().updateRowCount(maxRowCount());
....
}
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First question: why do you package the this pointer in a THREADSTRUCT structure if you only need to pass the pointer ? Just pass the this pointer, this will make things a bit more readable.
I guess query is a protected member function of DerivedDialog ? Your names are not consistent: you replaced some of them so we can't understand everything.
Anyway the error message should be clear enough: you are trying to access a protected method from one class from another class, which is not allowed. Make the function public if you need to access it from another class.
And please read the poisting guidelines before posting: format the code properly so that it is more readable. It's been a while that you are on this forum...
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