[PATCH 1/2] comctl32/combo: Don't redraw the Combo Box when dropped down if it has an editbox

[Gabriel Ivăncescu]

Some applications subclass the combo box and handle WM_ERASEBKGND themselves,
without using WS_CLIPCHILDREN. This causes them to erase over the editbox
child. There's no reason to redraw it in this case since the editbox is
supposed to cover it, anyway.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=22260
Signed-off-by: Gabriel Ivăncescu 
---
 dlls/comctl32/combo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/comctl32/combo.c b/dlls/comctl32/combo.c
index 8a533e6..e828986 100644
--- a/dlls/comctl32/combo.c
+++ b/dlls/comctl32/combo.c
@@ -1045,7 +1045,7 @@ static void CBDropDown( LPHEADCOMBO lphc )
                  SWP_NOACTIVATE | SWP_SHOWWINDOW );

-   if( !(lphc->wState & CBF_NOREDRAW) )
+   if( !(lphc->wState & (CBF_NOREDRAW | CBF_EDIT)) )
      RedrawWindow( lphc->self, NULL, 0, RDW_INVALIDATE |
    		   RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );

[PATCH 2/2] user32/combo: Don't redraw the Combo Box when dropped down if it has an editbox

[Gabriel Ivăncescu]

Some applications subclass the combo box and handle WM_ERASEBKGND themselves,
without using WS_CLIPCHILDREN. This causes them to erase over the editbox
child. There's no reason to redraw it in this case since the editbox is
supposed to cover it, anyway.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=22260
Signed-off-by: Gabriel Ivăncescu 
---
 dlls/user32/combo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/user32/combo.c b/dlls/user32/combo.c
index 59c2e64..bd9a852 100644
--- a/dlls/user32/combo.c
+++ b/dlls/user32/combo.c
@@ -1051,7 +1051,7 @@ static void CBDropDown( LPHEADCOMBO lphc )
                  SWP_NOACTIVATE | SWP_SHOWWINDOW );

-   if( !(lphc->wState & CBF_NOREDRAW) )
+   if( !(lphc->wState & (CBF_NOREDRAW | CBF_EDIT)) )
      RedrawWindow( lphc->self, NULL, 0, RDW_INVALIDATE |
    		   RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );

[PATCH 2/2] user32/combo: Don't redraw the Combo Box when dropped down if it has an editbox

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=50650

Your paranoid android.

=== debian9 (32 bit report) ===

user32:
msg.c:8713: Test failed: WaitForSingleObject failed 102
msg.c:8719: Test failed: destroy child on thread exit: 0: the msg 0x0082 was expected, but got msg 0x000f instead
msg.c:8719: Test failed: destroy child on thread exit: 1: the msg 0x000f was expected, but got msg 0x0014 instead
msg.c:8719: Test failed: destroy child on thread exit: 2: the msg sequence is not complete: expected 0014 - actual 0000

=== debian9 (32 bit WoW report) ===

user32:
msg.c:8713: Test failed: WaitForSingleObject failed 102
msg.c:8719: Test failed: destroy child on thread exit: 0: the msg 0x0082 was expected, but got msg 0x000f instead
msg.c:8719: Test failed: destroy child on thread exit: 1: the msg 0x000f was expected, but got msg 0x0014 instead
msg.c:8719: Test failed: destroy child on thread exit: 2: the msg sequence is not complete: expected 0014 - actual 0000