[PATCH 1/2] d3d9/tests: Work around focus-follows-mouse test failures.

[Stefan Dösinger]

Removing WS_VISIBLE without updating the window state with
SWP_FRAMECHANGED is enough to trigger d3d9's hidden window codepath
(native and in Wine), but doesn't actually hide the window. This
prevents unpredictable focus changes on focus follows mouse WMs.

Signed-off-by: Stefan Dösinger <stefan at codeweavers.com>
---
 dlls/d3d9/tests/d3d9ex.c | 6 +++++-
 dlls/d3d9/tests/device.c | 6 +++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/dlls/d3d9/tests/d3d9ex.c b/dlls/d3d9/tests/d3d9ex.c
index c965af7264..702fea001d 100644
--- a/dlls/d3d9/tests/d3d9ex.c
+++ b/dlls/d3d9/tests/d3d9ex.c
@@ -2952,7 +2952,11 @@ static void test_wndproc(void)
         hr = reset_device(device, &device_desc);
         ok(SUCCEEDED(hr), "Failed to reset device, hr %#x.\n", hr);
 
-        ShowWindow(device_window, SW_HIDE);
+        /* Remove the WS_VISIBLE flag to test hidden windows. This is enough to trigger d3d's hidden
+         * window codepath, but does not actually hide the window without a SetWindowPos(SWP_FRAMECHANGED)
+         * call. This way we avoid focus changes and random failures on focus follows mouse WMs. */
+        device_style = GetWindowLongA(device_window, GWL_STYLE);
+        SetWindowLongA(device_window, GWL_STYLE, device_style & ~WS_VISIBLE);
         flush_events();
 
         expect_messages = focus_loss_messages_hidden;
diff --git a/dlls/d3d9/tests/device.c b/dlls/d3d9/tests/device.c
index 3bf9c10f20..790e98ae4d 100644
--- a/dlls/d3d9/tests/device.c
+++ b/dlls/d3d9/tests/device.c
@@ -3907,7 +3907,11 @@ static void test_wndproc(void)
         hr = reset_device(device, &device_desc);
         ok(SUCCEEDED(hr), "Failed to reset device, hr %#x.\n", hr);
 
-        ShowWindow(device_window, SW_HIDE);
+        /* Remove the WS_VISIBLE flag to test hidden windows. This is enough to trigger d3d's hidden
+         * window codepath, but does not actually hide the window without a SetWindowPos(SWP_FRAMECHANGED)
+         * call. This way we avoid focus changes and random failures on focus follows mouse WMs. */
+        device_style = GetWindowLongA(device_window, GWL_STYLE);
+        SetWindowLongA(device_window, GWL_STYLE, device_style & ~WS_VISIBLE);
         flush_events();
 
         expect_messages = focus_loss_messages_hidden;
-- 
2.13.6