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Your thread needs to have its own message loop, and since you need to display a progress bar, it should be modeless dialog box. &nbsp;Besides, try to remove the endthread() call, instead, let the thread inform the main thread that it is terminated.<br />

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Your thread needs to have its own message loop, and since you need to display a progress bar, it should be modeless dialog box.  Besides, try to remove the endthread() call, instead, let the thread inform the main thread that it is terminated.


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Sorry, I mean you're creating a worker-thread.<br />

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Sorry, I mean you're creating a worker-thread.


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<div class="content wysiwyg-content">
Hello,<br />
<br />
&quot;Houston, we have a problem&quot;<br />
Well, I do anyway. I'm trying to learn how to use threads.<br />
And well, I must be missing something (probably a brain)<br />
Can you please explain why this doesn't work and how to<br />
fix it? <br />
The problem is that the dialog isn't shown. <br />
See code below.<br />
<br />
UINT myThread(LPVOID param)<br />
{<br />
&nbsp; &nbsp; MyDialog dlg;<br />
&nbsp; &nbsp; dlg.DoModal();<br />
}<br />
<br />
void MyClass::startIt()<br />
{<br />
&nbsp; &nbsp; CWinThread* thread = AfxBeginThread(myThread, 0)<br />
&nbsp; &nbsp; thisTakesTime();<br />
&nbsp; &nbsp; _endthread(thread-&gt;m_nThre<wbr />adID);<br />
}<br />
<br />
All I want to do is to show a DialogBox with a progress-<br />
control, while I do an operation that takes alot of time.<br />
And, of course, when this operation is finished kill the<br />
thread and DialogBox.<br />
I am confused, I thought this was the way.<br />
If I change myThread-func to only display a MessageBox<br />
it works fine. The MessgeBox is displayed.<br />
<br />
Regards, <br />
-M-
</div>
</div>


Hello,

"Houston, we have a problem"
Well, I do anyway. I'm trying to learn how to use threads.
And well, I must be missing something (probably a brain)
Can you please explain why this doesn't work and how to
fix it? 
The problem is that the dialog isn't shown. 
See code below.

UINT myThread(LPVOID param)
{
    MyDialog dlg;
    dlg.DoModal();
}

void MyClass::startIt()
{
    CWinThread* thread = AfxBeginThread(myThread, 0)
    thisTakesTime();
    _endthread(thread->m_nThreadID);
}

All I want to do is to show a DialogBox with a progress-
control, while I do an operation that takes alot of time.
And, of course, when this operation is finished kill the
thread and DialogBox.
I am confused, I thought this was the way.
If I change myThread-func to only display a MessageBox
it works fine. The MessgeBox is displayed.

Regards, 
-M-

Thread-problem

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.