comctl32: toolbar: set maximum tooltip width

[Oleg Krylov]

Native toolbar sets its tooltip control maxtipwidth. This also allows 
creation multiline tooltips. Value is based on current display dpi. 
Formula was obtained examining wine trace with native comctl32.dll

Changelog:
- Set maximum tooltip width
Author: Oleg Krylov
License: LGPL

-------------- next part --------------
>From 78a170f904d4e3f64931fc379bcaf46598a002ba Mon Sep 17 00:00:00 2001
From: Oleg Krylov <oleg.krylov at gmail.com>
Date: Wed, 18 Oct 2006 15:39:50 +0300
Subject: comctl32: toolbar: set maximum tooltip width

---
 dlls/comctl32/toolbar.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/dlls/comctl32/toolbar.c b/dlls/comctl32/toolbar.c
index 806fa97..4276f7b 100644
--- a/dlls/comctl32/toolbar.c
+++ b/dlls/comctl32/toolbar.c
@@ -1949,6 +1949,7 @@ TOOLBAR_TooltipCreateControl(TOOLBAR_INF
 {
     int i;
     NMTOOLTIPSCREATED nmttc;
+    HDC hDC;
 
     infoPtr->hwndToolTip = CreateWindowExW(0, TOOLTIPS_CLASSW, NULL, WS_POPUP,
             CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
@@ -1957,6 +1958,12 @@ TOOLBAR_TooltipCreateControl(TOOLBAR_INF
     if (!infoPtr->hwndToolTip)
         return;
 
+    /* Set maximum tooltip width */
+    hDC = GetDC (infoPtr->hwndToolTip);
+    SendMessageW (infoPtr->hwndToolTip, TTM_SETMAXTIPWIDTH, 0,
+                  MulDiv (GetDeviceCaps (hDC, LOGPIXELSX), 300, 72) );
+    ReleaseDC (infoPtr->hwndToolTip, hDC);
+
     /* Send NM_TOOLTIPSCREATED notification */
     nmttc.hwndToolTips = infoPtr->hwndToolTip;
     TOOLBAR_SendNotify(&nmttc.hdr, infoPtr, NM_TOOLTIPSCREATED);
-- 
1.4.2.3