[PATCH 1/2] winex11.drv: Update _NET_WM_FULLSCREEN_MONITORS after a window has been mapped.

[Zhiyi Zhang]

From: Zhiyi Zhang

This fixes a regression from 6dc9f5e1, which made calling update_net_wm_fullscreen_monitors() before
a window is mapped. Thus after a window gets mapped and managed by window managers, _NET_WM_FULLSCREEN_MONITORS
may not be set and so windows covering multiple monitors don't function as expected.

Partially fix Project CARS 3 (958400) fails to enter triple screen mode.
---
 dlls/winex11.drv/window.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index a733d566d4f..1fe96f03897 100644
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -1432,7 +1432,6 @@ static void window_set_wm_state( struct x11drv_win_data *data, UINT new_state, B
         set_wm_hints( data );
         update_net_wm_states( data );
         sync_window_style( data );
-        update_net_wm_fullscreen_monitors( data );
         break;
     case MAKELONG(IconicState, NormalState):
     case MAKELONG(NormalState, IconicState):
@@ -1459,7 +1458,11 @@ static void window_set_wm_state( struct x11drv_win_data *data, UINT new_state, B
     case MAKELONG(WithdrawnState, NormalState):
     case MAKELONG(IconicState, NormalState):
         if (data->embedded) set_xembed_flags( data, XEMBED_MAPPED );
-        else XMapWindow( data->display, data->whole_window );
+        else
+        {
+            XMapWindow( data->display, data->whole_window );
+            update_net_wm_fullscreen_monitors( data );
+        }
         break;
     case MAKELONG(NormalState, WithdrawnState):
     case MAKELONG(IconicState, WithdrawnState):