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Hi All
How can i insertitem in ClistBox through Threading?Plz help me
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The simple answer is: you don't. You should never access UI elements from a different thread than the UI thread. If you have to do such a thing, rethink your design. A better option would be to "generate" your data in the thread and then send a user defined message to your window telling it to refresh itself. When receiving the message, your window will then fetch the data and add it to the list control.
I think this article[^] will help you a lot for threading.
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Ok here i am try to do.i don't know it's a right or not.Code is here
UINT WorkerThreadProc( LPVOID Param );
UINT WorkerThreadProc(LPVOID Param)
{
CStdioFile file;
CString readstring;
if(file.Open(log1, CFile::modeRead | CFile::modeNoTruncate))
{
CString readstring
while(file.end)
{
int i=0;
file47.ReadStringreadstring.Trim());
if(readstring.IsEmpty())
{
break;
}
else
{
for(;i<1000;)
{
m_listba.InsertString(i,readstring);
break;
}
i++;
}
}
file.Close();
}
return TRUE;
}
void CABC::OnBnClickedButton3()
{
AfxBeginThread(WorkerThreadProc,NULL,THREAD_PRIORITY_NORMAL,0,0,NULL);
WaitForSingleObject(WorkerThreadProc, INFINITE);
}
It's working but when i click on OKButton then it's show Assertion Failed Afxwil2.inl Line 731.
Plz help me
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That's exactly what Cédric suggested you NOT to do. 
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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So, you didn't even read my reply did you ?
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By the way, two remarks:
1) How does this code even compile ? How can you access your m_listba variable from your thread ? Is it a global variable  ?
2) What's the purpose of doing that in a thread if you call WaitForSingleObject just afterwards anyway ? 
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yaa m_listba is global variable.Just i try to impliment it from example of Codeproject.
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(I'm gonna reply to your original message that you deleted)
MsmVc wrote: Plz help me
Help yourself and read the article I linked to you. Threading is not a simple subject that can be explained in 3 lines. If you want to use multithreading and understand what you are doing, then you'll need to spend a bit more time than asking a question on a forum.
MsmVc wrote Yes m_listba is global variable.
That's really ugly, you should make it a member of your dialog class. You can't access it from your thread so why making it a global varialbe ?
And by the way, the "m_" suffix is usually applied to class member variables (m for member). If you use it on a global variable, it is totally confusing.
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sorry m_listba is member variable..
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Then your code cannot compile (unless I missed something or you didn't post everything).
Anyway, we can discuss the whole day about minor details as this, it still won't make your code work because you can't access UI elements (like the list box) from a separate thread. Serioulsy, I have the impression to talk to a wall here  ...
Did you read that damn article finally ?
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yaa i read it.My problem is that i have a file which have a somany data and i want to insertdata into ListBox through thread.I am useing thread becouse without thread my Dialog is showing Not responding.
I read article which is given by you.But i need some example to do that.Plz help me
modified on Friday, March 27, 2009 5:28 AM
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The worker thread shouldn't directly manipulate the GUI. It should instead post a message to the GUI thread, with in turns updates the GUI. It's not difficult, instead of calling InsertString from within the thread, call PostMessage with appropriate data. On receiving the message, the GUI thread will call InsertString.
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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The point is that everything is explained in the article, with an example and everything. And the example is about a list box being "populated" from a worker thread (through a message sent to the UI). So, I think this is a lost cause
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The basic issue is that you're a retard. You've had explained to you why you can't do it, the framework it throwing exceptions, because you can't do it, and you're still trying to do it. Perhaps you should learn VB, or even Logo ?
Christian Graus
Driven to the arms of OSX by Vista.
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Christian Graus wrote: Perhaps you should learn VB
I supposed it was already in the 'Retard's Toolbox'. 
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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Davitor wrote: yaa m_listba is global
To fool the enemy?
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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Cedric Moonen is right,it's better that UI put in the UI thread.generate data in other thread.
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Hi everyone,
I m posting message for first time on any forum. I hope my problem will be solved here.I want my application to process only keyboard input but not any other device's input, like barcode. I have a window with an edit box there. Focus is on edit box which is a child window of the main window. I want that my edit box should not take barcode scanner's input. But if i press any key on keyboard , it should take it. I have heard about Windows Hooks. but i m unable to distinguish between both the inputs at hook level. Can anyone have done this before? if yes then how..? Please help me as soon as possible.. it's really very important.
Thanks in advance.
modified on Friday, March 27, 2009 5:51 AM
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I doubt this is going to be possible, because other applications/drivers/etc can simply call keybd_event() which mimics keystrokes. Your app would have no way of knowing if they were real or not.
To keep text from being pasted, you could intercept the WM_PASTE message. This might eliminate some of your "input" troubles.
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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See my signature! you are likely to find the answer there.
If you don't, try googling with "detect language pack" etc...
You need to google first, if you have "It's urgent please" mentioned in your question.
 _AnShUmAn_
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Purish Dwivedi wrote: URGENT
Next time try with URGENTZ PLZ PLZ URGENTZ, maybe you'll get a faster help.
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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CPallini wrote: Next time
Well, that's only the 6th or 7th time he is posting the same question
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