MFC add scrollbar to CWnd member

c++ mfc scrollbar cwnd
Tal picture Tal · Dec 25, 2011 · Viewed 12.1k times · Source


I have a member of CWnd class name mywindow
and i want to add to it a scroll-bar.
how i can do it?

i try already to do:

mywindow.EnableScrollBarCtrl(SB_BOTH,TRUE);

it display both Horizontal and Vertical scroll-bars,
but i cannot push the buttons or move the scroll-bars.
i try also after the first command:

mywindow.EnableScrollBar(SB_BOTH,ESB_ENABLE_BOTH);

and it change nothing.

can someone could show me a simple example how to add scroll-bar to this member?

thanks a lot,
Tal

Answer

dwo picture dwo · Dec 27, 2011

Enabling the scroll bars isn't enough. You have to react to the window messages WM_HSCROLLand WM_VSCROLL. Using the GetScrollInfo method you get the position (value) of the scroll bars and then you draw your window content according to this position.

Related questions

Private and Protected Members : C++

Can someone enlighten me as to the difference between private and protected members in classes? I understand from best practice conventions that variables and functions which are not called outside the class should be made private - but looking at …

Read More
How do you convert CString and std::string std::wstring to each other?

CString is quite handy, while std::string is more compatible with STL container. I am using hash_map. However, hash_map does not support CStrings as keys, so I want to convert the CString into a std::string. Writing a …

Read More
LPCSTR, LPCTSTR and LPTSTR

What the difference between LPCSTR, LPCTSTR and LPTSTR? Why do we need to do this to convert a string into a LV / _ITEM structure variable pszText: LV_DISPINFO dispinfo; dispinfo.item.pszText = LPTSTR((LPCTSTR)string);

Read More