have a look at the sample at the following link
http://www.funducode.com/f
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OnButtonup and onbuttondown
Hi, could anyone provide me some sample codes on how to do a seperate control for onbuttoup and for onbuttondown please?
I know OnLButtonDown and OnLButtonUp is needed , but i do not know how to use it. Could anyone teach me how to do it please?
Thanks
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Answers
As OnegaZhang points out you need WM_LBUTTONDOWN and WM_LBUTTONUP messages.
You can use the class wizard to add messages to the message map, or you can add them manually. Right click the class in the project tree to use wizard. The messagemap entries for button up/down look like this in my CMapView class (a CView descendant)
BEGIN_MESSAGE_MAP(CMapView
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
END_MESSAGE_MAP()
Your class member function looks like this
afx_msg void OnLButtonDown( UINT nFlags, CPoint point );
afx_msg void OnLButtonUp( UINT nFlags, CPoint point );
The "nFlags" are typically used to identify if control of shift is down. The "point" is the mouse position when clicked. Press F1 in the source window with the cursor on the "ON_WM_LBUTTONDOWN()", and you will find the info you need.
Good luck
Ruskialt
Hi,
If you wnat to implement onbuttonup and onbuttondown to be implemented on a Cbutton.
Derive a class from CButton and handle these messages (onbuttonup and onbuttondown )there and create the Button object with the derive class. If you don't want to derive it then override WindowProc and when WM_LBUTTONDOWN() WM_LBUTTONUP() are encountered then check the window handle with the button handle, if they equal then user has clicken on the button.
-Surya
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by: OnegaZhangPosted on 2004-10-24 at 21:18:05ID: 12397244
add two message handlers WM_LBUTTONDOWN and WM_LBUTTONUP
when left mouse button is down, OnLButtonDown is being called.