[Bug 21085] New: Comctl32 status control uses tooltip window wrongly

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=21085

           Summary: Comctl32 status control uses tooltip window wrongly
           Product: Wine
           Version: 1.1.35
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: comctl32
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: us at edmeades.me.uk


I've been debugging a private application and tracked down the source of a trap
to the way the status control initializes and uses the tooltip control.

The application in question traps because it receives a WM_CREATE message for
the tooltip window and calls GetWindowLong against an hwnd for a value it
should have set earlier - this fails but the code doesnt notice, and results in
a trap.

On windows, the status control does not create the tooltip until the first
WM_MOUSEMOVE event, and hence all application initialization would have
finished in my case. You can clearly see this by use of a simple application
with a statusbar control set to have a tooltip and text, and then use SPY++ to
monitor the window creation messages.

Note this also shows a 2nd problem which is that the status control passes the
tooltip text to the tooltip window to manage. This is wrong, because using the
status bar you can set and then get the tooltip text before the tooltip window
is ever created. Additionally, SPY++ shows that the notify messages (NEEDTEXT
type) are sent to the status window when the tooltip needs the text, both of
which mean that the status control should manage the text.

I have a simple application which has a button for get tip, set tip text, and
using it you can see the behaviour above. It doesnt replicate the trap but you
can see the behavious using it - you dont get a WM_CREATE for the tooltip until
such time as you move the mouse into the statusbar area on windows.

Simple workarounds for me: winetricks comctl32, or modifying the
STATUSBAR_WMCreate method to something like "if (0 && dwStyle & SBT_TOOLTIPS)
{" to prevent the tooltip altogether.

JECC

JECC

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