Zhiyi Zhang : win32u: Use the window station name to check if an application is running as a service.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 213ac0de422385fe133a7b483039cfc57dd4a0c8
URL:    https://gitlab.winehq.org/wine/wine/-/commit/213ac0de422385fe133a7b483039cfc...

Author: Zhiyi Zhang 
Date:   Tue Jun 20 15:44:12 2023 +0800

win32u: Use the window station name to check if an application is running as a service.

Having an invisible window station doesn't mean an application is running in a service context. For
example, Chromium creates a sandbox process to run in an invisible window station and still expect
the physical monitor information to be returned, instead of the virtual monitor information for
services.

---

dlls/user32/tests/winstation.c | 1 -
 dlls/win32u/sysparams.c        | 8 +++++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/dlls/user32/tests/winstation.c b/dlls/user32/tests/winstation.c
index 5902743c6ca..7829e3364b3 100644
--- a/dlls/user32/tests/winstation.c
+++ b/dlls/user32/tests/winstation.c
@@ -1042,7 +1042,6 @@ static void test_invisible_winstation_child(char *expected_info)
     sprintf(buffer, "%d,%d,%d,%d,%d", GetSystemMetrics(SM_XVIRTUALSCREEN),
             GetSystemMetrics(SM_YVIRTUALSCREEN), GetSystemMetrics(SM_CXVIRTUALSCREEN),
             GetSystemMetrics(SM_CYVIRTUALSCREEN), GetSystemMetrics(SM_CMONITORS));
-    todo_wine_if(strcmp(buffer, "0,0,1024,768,1"))
     ok(!strcmp(buffer, expected_info), "Expected %s, got %s.\n", expected_info, buffer);
 }

diff --git a/dlls/win32u/sysparams.c b/dlls/win32u/sysparams.c
index acda600b43c..233e5bb934b 100644
--- a/dlls/win32u/sysparams.c
+++ b/dlls/win32u/sysparams.c
@@ -1994,14 +1994,16 @@ static BOOL desktop_update_display_devices( BOOL force, struct device_manager_ct

BOOL update_display_cache( BOOL force )
 {
+    static const WCHAR wine_service_station_name[] =
+        {'_','_','w','i','n','e','s','e','r','v','i','c','e','_','w','i','n','s','t','a','t','i','o','n',0};
     HWINSTA winstation = NtUserGetProcessWindowStation();
     struct device_manager_ctx ctx = {0};
     BOOL was_virtual_desktop, ret;
-    USEROBJECTFLAGS flags;
+    WCHAR name[MAX_PATH];

/* services do not have any adapters, only a virtual monitor */
-    if (NtUserGetObjectInformation( winstation, UOI_FLAGS, &flags, sizeof(flags), NULL )
-        && !(flags.dwFlags & WSF_VISIBLE))
+    if (NtUserGetObjectInformation( winstation, UOI_NAME, name, sizeof(name), NULL )
+        && !wcscmp( name, wine_service_station_name ))
     {
         pthread_mutex_lock( &display_lock );
         clear_display_devices();