I'm getting some strange warnings when I compile:
pointer truncation from 'HMENU' to 'unsigned int'
The line in question is:
AppendMenu(hMenu,MF_STRING|MF_POPUP,UINT(hStyle)," Style");
(where hStyle is HMENU type)
This line is exactly the same as a line in another app I have but that one
doesn't give a warning.
Other warnings are:
pointer truncation from 'LRESULT (__stdcall *)(HWND,UINT,WPARAM,LPARAM)' to
'LONG'
conversion from 'LONG' to 'WNDPROC' of greater size
pointer truncation from 'WNDPROC' to 'LONG'
The lines in question are:
WNDPROC
_Wallpaper=(WNDPROC)SetWindowLong(hwnd,GWL_WNDPROC ,(LONG)WallpaperProc);
SetWindowLong(GetDlgItem(hwndDlg,IDC_WALLPAPER),GW L_WNDPROC,(LONG)_Wallpaper);
Why should this be? My code works and the app functions as expected. I'm
sure I shouldn't get those warnings though. 5 3610
Lindsay wrote: I'm getting some strange warnings when I compile:
pointer truncation from 'HMENU' to 'unsigned int'
The line in question is: AppendMenu(hMenu,MF_STRING|MF_POPUP,UINT(hStyle)," Style"); (where hStyle is HMENU type) This line is exactly the same as a line in another app I have but that one doesn't give a warning.
Other warnings are: pointer truncation from 'LRESULT (__stdcall *)(HWND,UINT,WPARAM,LPARAM)' to 'LONG' conversion from 'LONG' to 'WNDPROC' of greater size pointer truncation from 'WNDPROC' to 'LONG'
The lines in question are: WNDPROC _Wallpaper=(WNDPROC)SetWindowLong(hwnd,GWL_WNDPROC ,(LONG)WallpaperProc); SetWindowLong(GetDlgItem(hwndDlg,IDC_WALLPAPER),GW L_WNDPROC,(LONG)_Wallpaper);
Why should this be? My code works and the app functions as expected. I'm sure I shouldn't get those warnings though.
None of your code is standard C++ so is off topic here. Try asking on
news:comp.os.ms-windows.programmer.win32.
Looks to me though that your warning are to do with VC++ gently
reminding you that pointers cannot safely be converted to integers or
vice versa. With 64-bit computing round the corner, the VC++ compiler
has got a lot more fussy about this issue.
john
Lindsay wrote: I'm getting some strange warnings when I compile:
pointer truncation from 'HMENU' to 'unsigned int'
Apparently pointers on your system are bigger than 'unsigned int'. I can
only speculate that you must be on Win64.
The line in question is: AppendMenu(hMenu,MF_STRING|MF_POPUP,UINT(hStyle)," Style"); (where hStyle is HMENU type) This line is exactly the same as a line in another app I have but that one doesn't give a warning.
Are you sure you're building both apps for the same target platform?
Other warnings are: pointer truncation from 'LRESULT (__stdcall *)(HWND,UINT,WPARAM,LPARAM)' to 'LONG' conversion from 'LONG' to 'WNDPROC' of greater size pointer truncation from 'WNDPROC' to 'LONG'
Again, sizeof(yourpointertypeabove) > sizeof(LONG).
The lines in question are: WNDPROC _Wallpaper=(WNDPROC)SetWindowLong(hwnd,GWL_WNDPROC ,(LONG)WallpaperProc); SetWindowLong(GetDlgItem(hwndDlg,IDC_WALLPAPER),GW L_WNDPROC,(LONG)_Wallpaper);
Why should this be? My code works and the app functions as expected. I'm sure I shouldn't get those warnings though.
If you're sure, you need to complain to the maker of your compiler.
V
"Victor Bazarov" <v.********@comAcast.net> wrote in message
news:vS******************@newsread1.mlpsca01.us.to .verio.net... Lindsay wrote: I'm getting some strange warnings when I compile:
pointer truncation from 'HMENU' to 'unsigned int' Apparently pointers on your system are bigger than 'unsigned int'. I can only speculate that you must be on Win64.
No. Both apps are Win32. The line in question is: AppendMenu(hMenu,MF_STRING|MF_POPUP,UINT(hStyle)," Style"); (where hStyle is HMENU type) This line is exactly the same as a line in another app I have but that one doesn't give a warning.
Are you sure you're building both apps for the same target platform?
Yes. They are both the same. Other warnings are: pointer truncation from 'LRESULT (__stdcall *)(HWND,UINT,WPARAM,LPARAM)' to 'LONG' conversion from 'LONG' to 'WNDPROC' of greater size pointer truncation from 'WNDPROC' to 'LONG'
Again, sizeof(yourpointertypeabove) > sizeof(LONG).
The lines in question are: WNDPROC _Wallpaper=(WNDPROC)SetWindowLong(hwnd,GWL_WNDPROC ,(LONG)WallpaperProc); SetWindowLong(GetDlgItem(hwndDlg,IDC_WALLPAPER),GW L_WNDPROC,(LONG)_Wallpaper);
Why should this be? My code works and the app functions as expected. I'm sure I shouldn't get those warnings though.
If you're sure, you need to complain to the maker of your compiler.
How I would love to complain to MS. But it doesn't explain why one app is ok
and this one gives warnings. V
* Lindsay: I'm getting some strange warnings when I compile: pointer truncation from 'HMENU' to 'unsigned int'
Assuming Microsoft Visual C++:
That's probably because you are compiling with 64-bit compatibility
checking enabled. Then the compiler complains about things that won't
work somewhere in the future, plus a few things that will work in the
future but that it doesn't understand will work. That includes that it
may complain about e.g. giving a std::size_t to std::cout.
If you upgrade to version 8.x, assuming you haven't, then you may get
additional warnings on things like std::string::copy, because that
compiler team is really into warnings -- cry wolf, is their motto.
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
Lindsay wrote: [..] How I would love to complain to MS. But it doesn't explain why one app is ok and this one gives warnings.
Post to microsoft.public.vc.language -- that's where they talk VC++.
V This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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