[Bug 13159] tooltips won't show up on partly hidden items

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=13159





--- Comment #5 from Igor Tarasov <tarasov.igor at gmail.com>  2009-03-14 12:04:33 ---
Way to reproduce it with treeview in control spy:

1. Run Tree View.exe.
2. Expand any item, for instance "Mercury"
3. Hover partly hidden item.
4. Native comctl would show you a tooltip. Builtin one won't.

Way to reproduce it with listview in control spy:

1. Run List View.exe
2. Set long text for some item so that it gets trimmed. For example:

MSG (LVM_SETITEMTEXT,
0,
LVITEM(0,0,0,0/0/0,0,"blah blah blah blah blah blah blah",127,0,0,0))

3. Hover that item.
4. Native comctl would show you a tooltip. Builtin one won't.

One of the things that I've already found is that builtin comctl's listview and
treeview controls do not issue TTM_RELAYEVENT on mouse-related messages.
http://msdn.microsoft.com/en-us/library/bb760403(VS.85).aspx

Another thing is that native comctl creates tooltip for listview on listview
creation, builtin does that only on request. This is being achieved with
COMCTL32_CreateToolTip which creates empty tooltip with no tool. This makes all
relayed events useless, since TOOLTIPS_RelayEvent calls
TOOLTIPS_GetToolFromPoint which returns -1 for empty tooltips (with no tools).


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