user32:clipboard winex11.drv (KDE) interference

[Francois Gouget]

I have been investigating the ole32:clipboard, user32:clipboard and 
user32:edit failures because they seemed to have a common outside cause, 
namely the Radeon Windows driver.

But user32:clipboard also sometimes has similar failures in Wine on my 
box. So I will start with these.


Here is one exemple happening in test_synthesized():

clipboard.c:817: 0024: CloseClipboard() = 1
# the test closed the clipboard

00a4:trace:clipboard:acquire_selection win e000010 
00a4:trace:clipboard:X11DRV_SelectionRequest got request on e000010 for selection "CLIPBOARD" target "TARGETS" win bc00001 prop "SELECTION_DATA" 
# 00a4 is the winex11.drv thread for the clipboard manager
# here it got an X11 message

...
00a4:trace:clipboard:OpenClipboard 00010040 == clipboard_hwnd
00a4:trace:clipboard:GetClipboardData CF_TEXT sending WM_RENDERFORMAT to 0005004A

0024:trace:clipboard:CountClipboardFormats returning 4
0024:trace:clipboard:IsClipboardFormatAvailable CF_TEXT -> 1
0024:trace:clipboard:IsClipboardFormatAvailable CF_LOCALE -> 1
0024:trace:clipboard:IsClipboardFormatAvailable CF_OEMTEXT -> 1
0024:trace:clipboard:IsClipboardFormatAvailable CF_UNICODETEXT -> 1
# back to the main test thread

0024:trace:clipboard:OpenClipboard 00000000
clipboard.c:832: 0024: OpenClipboard(00000000) = 0 (open=00010040 own=0005004A)
clipboard.c:833: Test failed: 0: gle 5
# the test's OpenClipboard() call fails because winex11.drv has not 
# released the clipboard yet.

...
00a4:trace:clipboard:GetClipboardData CF_TEXT error c0000034
00a4:trace:clipboard:GetClipboardData CF_UNICODETEXT error c0000034
00a4:trace:clipboard:CloseClipboard 


Why did winex11.drv get a query for the clipboard content?
Based on other X11 requests I blame KDE's clipboard manager:

00a4:trace:clipboard:X11DRV_SelectionRequest got request on e000010 for selection "CLIPBOARD" target "TARGETS" win 2000013 prop "_QT_SELECTION"


So this explains why it happens on my box and not in the TestBot's VM 
since they run fvwm and have no clipboard manager.


What should we do about that?

-- 
Francois Gouget <fgouget at codeweavers.com>