The following piece of code does not work on DMC:
(It works fine with other compilers - BCC 5.02, LCC-win32)

//============================================
long tmp_gwl;

/*getting current listview style*/ /*tmp_gwl=0x50000000=WS_VISIBLE | WS_CHILD | LVS_ICON*/ tmp_gwl=GetWindowLong(hlistview, GWL_STYLE);

tmp_gwl=tmp_gwl & ~LVS_TYPEMASK;

/*trying to set new style*/
/*tmp_gwl=0x50000003=WS_VISIBLE | WS_CHILD | LVS_LIST*/
tmp_gwl=tmp_gwl | LVS_LIST;
SetWindowLong(hlistview, GWL_STYLE, tmp_gwl);
//============================================
If I use GetWindowLong after these lines, it returns
the style I was trying to set,
but visually there will be no changes!

If you could reproduce the problem in a standalone example, that would be most helpful.

www.digitalmars.com/faq.html#error


"Denis Troshin" <weiv@mail.ru> wrote in message news:bnp9p1$1g1e$1@digitaldaemon.com...
> The following piece of code does not work on DMC:
> (It works fine with other compilers - BCC 5.02, LCC-win32)
>
> //============================================
> long tmp_gwl;
>
> /*getting current listview style*/ /*tmp_gwl=0x50000000=WS_VISIBLE | WS_CHILD | LVS_ICON*/ tmp_gwl=GetWindowLong(hlistview, GWL_STYLE);
>
> tmp_gwl=tmp_gwl & ~LVS_TYPEMASK;
>
> /*trying to set new style*/
> /*tmp_gwl=0x50000003=WS_VISIBLE | WS_CHILD | LVS_LIST*/
> tmp_gwl=tmp_gwl | LVS_LIST;
> SetWindowLong(hlistview, GWL_STYLE, tmp_gwl);
> //============================================
> If I use GetWindowLong after these lines, it returns
> the style I was trying to set,
> but visually there will be no changes!
>
>

Are you sure you have:

EXETYPE		NT
SUBSYSTEM	WINDOWS,4.0

In your .def file???

And is you .def file part of your link command line???



Denis Troshin wrote:
> The following piece of code does not work on DMC:
> (It works fine with other compilers - BCC 5.02, LCC-win32)
> 
> //============================================
> long tmp_gwl;
> 
> /*getting current listview style*/
> /*tmp_gwl=0x50000000=WS_VISIBLE | WS_CHILD | LVS_ICON*/
> tmp_gwl=GetWindowLong(hlistview, GWL_STYLE);
> 
> tmp_gwl=tmp_gwl & ~LVS_TYPEMASK;
> 
> /*trying to set new style*/
> /*tmp_gwl=0x50000003=WS_VISIBLE | WS_CHILD | LVS_LIST*/
> tmp_gwl=tmp_gwl | LVS_LIST;
> SetWindowLong(hlistview, GWL_STYLE, tmp_gwl);
> //============================================
> If I use GetWindowLong after these lines, it returns
> the style I was trying to set,
> but visually there will be no changes!
> 
> 

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