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hi ,
Thats great as what you said. The problem was in creating the dc.
The code was
<pre>
void CThreadDemoView::OnMenuOffline()
{
// TODO: Add your command handler code here
CClientDC dc(this);
CreateThreadsToPlot(pDC, CPoint(100,100) );
}
</pre>
CreateThreadsToPlot will create the required no of threads to plot the
points.
After seeing your reply i tried this as a last attempt before giving it up. I went and browsed into the gdi code and found that my dc was not null. but surprisingly i think its invalid. This could be probably one
of the reason i might have got the assertion. The code change was
<pre>
void CThreadDemoView::OnMenuOffline()
{
// TODO: Add your command handler code here
CDC* pDC =GetDC();<B>//code changed here only</B>
CreateThreadsToPlot((CDC*)pDC, CPoint(100,100) );
}
</pre>
This way of getting the DC has fixed the same issue without changing
not even a single line of code in the program.
Thank you very much Mr. Mark Salsbery.
By,
Manu
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How can I get the mouse position when i click Right Button on the CListCtrl?
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On the mouse click message mapping function use following code
DWORD pos = GetMessagePos(); <br />
CPoint pt(LOWORD(pos), HIWORD(pos));
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which message you are using,
NM_RCLICK notification gives the LPNMITEMACTIVATE structure which contains ptAction member gives the position.
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Hello. I'm trying to set up a window that automatically does some financial calculations and I'm using spin controls with a buddy window. Everything is working fine except for one small problem. I would like to fire an event after the quantity in the spin control's buddy window changes. However, my event options (UDN_DELTAPOS, NM_RELEASEDCAPTURE, etc.) don't seem to allow for this. Does anyone out there know how to fire an event after the spin button has been clicked? This is driving me bonkers. Thank you.
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From the docs:
"An up-down control notifies its parent window when its current position
changes by sending it a UDN_DELTAPOS notification message and a
WM_VSCROLL or WM_HSCROLL message."
None of these messages are what you need?
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/coffee.gif)
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Perhaps the Scrolling messages are what I need. The DELTAPOS message gets fired before any changes are made so that doesn't really help me. I'll give the vertical scroll message a shot. Thanks a lot.
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If the buddy window is a single line edit control, maybe the EN_CHANGE notification
from the edit control?
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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The EN_CHANGE is what did it. For some reason I couldn't intercept the scroll messages. Problem solved and thanks again. I'd be lost without the Code Project.
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Cool good to know that works (I didn't test it).
Cheers,
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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How can I:
- assign a variable to a Radio Button control
- set the initial state to such an object
In VC++6, please
36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.
SUN-TZU - Art of War
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http://www.codeproject.com/KB/tips/HowToUseGoogle.aspx[^]
In this case, I'd make sure I include the term 'MFC' in my google search.
Christian Graus - Microsoft MVP - C++
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )
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Why you want to assign the variable for radio?
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to control the initial state
36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.
SUN-TZU - Art of War
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You can get a handle to it like this GetDlgItem(IDC_RADIO);
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Tnanks!![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif) 
36. When you surround an army, leave an outlet free.
...
Do not press a desperate foe too hard.
SUN-TZU - Art of War
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there you go bastard ! ROTFL
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Can someone provide some code that shows how to obtain a single character from a CString that could contain upwards of 1024 characters?
I've tried several methods, but none have worked.
Example:
CString str = _T("Can someone provide some code that shows how to obtain a single character from a CString that could contain upwards of 1024 characters? I've tried several methods, but none have worked.");
======================= end example ==========================
A C++ programming language novice, but striving to learn
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TCHAR c = str.GetAt(0);
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
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Whooaaa there cowboy...you did that without using GetBuffer()? Now you're just talkin' crazy 
Mark Salsbery
Microsoft MVP - Visual C++
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oh, sorry...
TCHAR a = *(str.GetBuffer(10)+5);
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
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Ahhh...it's a thing of beauty! 
That always makes me smile hehe
Mark Salsbery
Microsoft MVP - Visual C++
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Mark, Can you explain what you are talking about? Sounds like something I should already know; but I don't. What I am doing is reading back a CStdioFile that I have save data into (collected from User input in dialogs). Some of this data is float numbers, hence the need to check each character in the CString. I have to use atoi(char) to convert the character which doesn't accept a TCHAR.
A C++ programming language novice, but striving to learn
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