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List:       wine-devel
Subject:    Re: controls/scroll.c
From:       "Dmitry Timoshkov" <dmitry () baikal ! ru>
Date:       2004-03-29 12:42:02
Message-ID: 007001c4158b$6ff7ba40$d4823bd5 () dmitry
[Download RAW message or body]

"Ge van Geldorp" <ge@gse.nl> wrote:

> If you double click on the arrow of a scrollbar control the slider will
> move only 1 position instead of the expected 2. This is because the
> second click is delivered as a WM_LBUTTONDBLCLK (due to the CS_DBLCLKS
> class style) which is not handled by the scrollbar control. I can send
> you a small demo program.

Thanks for the explanation.

There is no need for a demo. Any app with ScrollBar window class could
confirm what you mean. Spy++ under Windows clearly shows that ScrollBar
under Windows reacts on WM_LBUTTONDBLCLK the same way as on WM_LBUTTONDOWN,
and that there is only single WM_LBUTTONDOWN, followed by WM_LBUTTONUP,
WM_LBUTTONDBLCLK, WM_LBUTTONUP.

Changelog:
    Dmitry Timoshkov <dmitry@codeweavers.com>
    Scrollbar should also react on WM_LBUTTONDBLCLK.

-- 
Dmitry.
["scroll.c.diff" (text/plain)]

--- cvs/hq/wine/controls/scroll.c	Wed Mar 17 02:17:42 2004
+++ wine/controls/scroll.c	Mon Mar 29 12:33:56 2004
@@ -1408,6 +1408,7 @@ static LRESULT WINAPI ScrollBarWndProc( 
 	}
 	return 0;
 
+    case WM_LBUTTONDBLCLK:
     case WM_LBUTTONDOWN:
         {
 	    POINT pt;


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