Prev: Using Environmental Variables in VS 2008 Pro's Tools - Options -Include files?
Next: Shell extension and "drag-and-drop" handler on directory background?
From: winapi on 2 Jun 2010 18:30
Hello,

Is it possible to change a windows style at "run time".
I found this code which seems to make sense, but does not seem to be
working?


long style = GetWindowLong(hwnd, GWL_EXSTYLE);
style &= ~WS_EX_STATICEDGE;
SetWindowLong(hwnd, GWL_EXSTYLE, style);


Maybe the window has to be destroyed created again?

Thanks.


From: winapi on 2 Jun 2010 18:58
Ok, I manage to get this working using the code below. . . .

void SetFrameStyle(HWND hwnd)
{
static RECT rect;
GetClientRect(hwnd, &rect);
SetWindowLongPtr(hwnd, GWL_EXSTYLE, (LONG)WS_EX_CLIENTEDGE);

SetWindowPos
(
hwnd,
NULL,
rect.left,
rect.top,
rect.right,
rect.bottom,
SWP_NOZORDER | SWP_FRAMECHANGED | SWP_SHOWWINDOW | SWP_NOMOVE
);
}


From: Dee Earley on 3 Jun 2010 04:07
On 02/06/2010 23:30, winapi wrote:
> Hello,
>
> Is it possible to change a windows style at "run time".
> I found this code which seems to make sense, but does not seem to be
> working?
>
> long style = GetWindowLong(hwnd, GWL_EXSTYLE);
> style&= ~WS_EX_STATICEDGE;
> SetWindowLong(hwnd, GWL_EXSTYLE, style);
>
> Maybe the window has to be destroyed created again?

It depends on the style.

Some are only used on creation or need some other change for them to be
applied.
I don't know of any solid documentation beyond MSDN though.

--
Dee Earley (dee.earley(a)icode.co.uk)
i-Catcher Development Team

iCode Systems

(Replies direct to my email address will be ignored.
Please reply to the group.)
From: Jackie on 3 Jun 2010 04:37
Dee Earley wrote:
> On 02/06/2010 23:30, winapi wrote:
>> Hello,
>>
>> Is it possible to change a windows style at "run time".
>> I found this code which seems to make sense, but does not seem to be
>> working?
>>
>> long style = GetWindowLong(hwnd, GWL_EXSTYLE);
>> style&= ~WS_EX_STATICEDGE;
>> SetWindowLong(hwnd, GWL_EXSTYLE, style);
>>
>> Maybe the window has to be destroyed created again?
>
> It depends on the style.
>
> Some are only used on creation or need some other change for them to be
> applied.
> I don't know of any solid documentation beyond MSDN though.
>

At least in some cases, you have to call SetWindowPos after setting the
new style, like s/he did (you can check an earlier post). :)

--
Regards,
Jackie
 | 
Pages: 1
Prev: Using Environmental Variables in VS 2008 Pro's Tools - Options -Include files?
Next: Shell extension and "drag-and-drop" handler on directory background?