C / C++ / MFC
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Hi,I want to change the string of a menu item,the string contains a '\t',like
"hello\tworld",I use CMenu::ModifyMenu function,I tried many times,the string always "hello",not"hello world",It will lost the string after '\t',Why,How to change it.
Thanks
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Show some more of the actual code; there may be something wrong with it.
Use the best guess
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With menu items, the tab character is used to right align text in a new column (commonly to print accelerator short cuts). See also the MENUITEM statement[^] in the MSDN.
So even when its is working, the result may be not the one expected by you.
I don't know why the text right of the tab is not shown by your application. Did you call CWnd::DrawMenuBar() after changing the menu content? If not, this may be the reason.
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I use vs2010,The Menu item got from CMFCMenuBar,like this:
CMenu *pMenu = CMenu::FromHandle(m_wndMenuBar.GetDefaultMenu());
CMenu *pSubMenu = pMenu ->GetSubMenu(1);
Cstring strText = _T("Hello\tworld");
pSubMenu ->ModifyMenu(ID_CHANGE, MF_BYCOMMAND, ID_CHANGE, strText);
I use DrawMenuBar ,it still doesn't work,why
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I don't know why.
You may check if tabs are shown when using in resource based menus. If not, the problem is application based. You may also check if '\a' is working (same as '\t' but text is left aligned).
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Hi,
I create a derived Cdialog with following code
main_window->progdbg = new CprogDebug();
main_window is main windows I get the pointer to it via AfxGetMainWInd
CMainFrame* main_window = (CMainFrame *) AfxGetMainWnd();
CMainFrame is created on the heap
later on when I try to create the the window modeless dialog it never comes back to me the is that is the create
ret = progdbg->Create(IDD_PROGDBG,(CWnd *)this);
if(ret == 0 )
error = GetLastError();
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I use the VC++ 2008 to check this question. I define one function named "max2" using keyword "static" and one function named "min2" using keyword "inline". I think that the compiler will use the code inside the min2 function to replace the function called. And the max2 with static keyword will be compiled to be a function.
But after the Deassembled in Debug model. I found that the exe both use the "call " assemble code to call these two functions. why does the inline not succeed?
modified 14 May '13 - 10:16.
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You have the idea right, but there are several issues with inline. Here is a list off the top of my head:
1. You can change the setting in the Project Properties -> C/C++ -> Optimizations -> Inline Function Expansion.
2. You say you de-assembled the Debug build of your exe, but for Debug builds the default setting is Disabled.
3. The inline keyword does not order the compiler to expand the function inline, it is merely a request. The compiler will determine if it is worth making it inline or if it is better left as a function call.
4. If a function is marked as inline and called from multiple other function, it might be inlined in some of the calling functions and not in others. Again the compiler determines whether it is worth it.
5. If you discover that the compiler is not inlining a function you have marked as inline and you really, really, really want it inlined because you think you know better or you want to run profiling with it inlined and not inlined, try using the __forceinline keyword.
http://msdn.microsoft.com/en-us/library/z8y1yy88(v=vs.90).aspx[^]
Soren Madsen
"When you don't know what you're doing it's best to do it quickly" - Jase #DuckDynasty
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