[PATCH v4 2/3] win32u: Support QDC_VIRTUAL_MODE_AWARE in NtUserGetDisplayConfigBufferSizes().

[Paul Gofman]

From: Paul Gofman

---
 dlls/user32/tests/monitor.c |  2 +-
 dlls/win32u/sysparams.c     | 14 ++++++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/dlls/user32/tests/monitor.c b/dlls/user32/tests/monitor.c
index 97562b4cd0f..3a55e6530a9 100644
--- a/dlls/user32/tests/monitor.c
+++ b/dlls/user32/tests/monitor.c
@@ -1697,7 +1697,7 @@ static void test_GetDisplayConfigBufferSizes(void)

paths = modes = 0;
     ret = pGetDisplayConfigBufferSizes(QDC_ONLY_ACTIVE_PATHS | QDC_VIRTUAL_MODE_AWARE, &paths, &modes);
-    todo_wine ok(!ret || broken(ret == ERROR_INVALID_PARAMETER || ret == ERROR_NOT_SUPPORTED) /* before Win10 */, "got %ld\n", ret);
+    ok(!ret || broken(ret == ERROR_INVALID_PARAMETER || ret == ERROR_NOT_SUPPORTED) /* before Win10 */, "got %ld\n", ret);
     if (!ret)
         ok(paths > 0 && modes > 0, "got %u, %u\n", paths, modes);
 }
diff --git a/dlls/win32u/sysparams.c b/dlls/win32u/sysparams.c
index 30fe1c1e834..74b913c2294 100644
--- a/dlls/win32u/sysparams.c
+++ b/dlls/win32u/sysparams.c
@@ -88,6 +88,8 @@ static const char guid_devinterface_display_adapterA[] = "{5B45201D-F2F2-4F3B-85
 static const char guid_display_device_arrivalA[] = "{1CA05180-A699-450A-9A0C-DE4FBE3DDD89}";
 static const char guid_devinterface_monitorA[] = "{E6F07B5F-EE97-4A90-B076-33F57BF4EAA7}";

+static const UINT32 qdc_retrieve_flags_mask = QDC_ALL_PATHS | QDC_ONLY_ACTIVE_PATHS | QDC_DATABASE_CURRENT;
+
 #define NEXT_DEVMODEW(mode) ((DEVMODEW *)((char *)((mode) + 1) + (mode)->dmDriverExtra))

struct gpu
@@ -2618,7 +2620,7 @@ LONG WINAPI NtUserGetDisplayConfigBufferSizes( UINT32 flags, UINT32 *num_path_in

*num_path_info = 0;

-    switch (flags)
+    switch (flags & qdc_retrieve_flags_mask)
     {
     case QDC_ALL_PATHS:
     case QDC_ONLY_ACTIVE_PATHS:
@@ -2628,8 +2630,14 @@ LONG WINAPI NtUserGetDisplayConfigBufferSizes( UINT32 flags, UINT32 *num_path_in
         return ERROR_INVALID_PARAMETER;
     }

+    if ((flags & ~(qdc_retrieve_flags_mask | QDC_VIRTUAL_MODE_AWARE)))
+    {
+        FIXME( "unsupported flags %#x.\n", flags );
+        return ERROR_INVALID_PARAMETER;
+    }
+
     /* FIXME: semi-stub */
-    if (flags != QDC_ONLY_ACTIVE_PATHS)
+    if ((flags & qdc_retrieve_flags_mask) != QDC_ONLY_ACTIVE_PATHS)
         FIXME( "only returning active paths\n" );

if (lock_display_devices())
@@ -2644,6 +2652,8 @@ LONG WINAPI NtUserGetDisplayConfigBufferSizes( UINT32 flags, UINT32 *num_path_in

*num_path_info = count;
     *num_mode_info = count * 2;
+    if (flags & QDC_VIRTUAL_MODE_AWARE)
+        *num_mode_info += count;
     TRACE( "returning %u paths %u modes\n", *num_path_info, *num_mode_info );
     return ERROR_SUCCESS;
 }