dinput: Acquire device only if specified window has focus in foreground coop level.

dlls/dinput/device.c

@@ -556,6 +556,8 @@ HRESULT WINAPI IDirectInputDevice2AImpl_Acquire(LPDIRECTINPUTDEVICE8A iface)
     HRESULT res;
 
     if (!This->data_format.user_df) return DIERR_INVALIDPARAM;
+    if (This->dwCoopLevel & DISCL_FOREGROUND && This->win != GetForegroundWindow())
+        return DIERR_OTHERAPPHASPRIO;
 
     EnterCriticalSection(&This->crit);
     res = This->acquired ? S_FALSE : DI_OK;

dlls/dinput/tests/mouse.c

@@ -72,11 +72,15 @@ static void test_acquire(LPDIRECTINPUT pDI, HWND hwnd)
 {
     HRESULT hr;
     LPDIRECTINPUTDEVICE pMouse = NULL;
+    DIMOUSESTATE2 m_state;
 
     hr = IDirectInput_CreateDevice(pDI, &GUID_SysMouse, &pMouse, NULL);
     ok(SUCCEEDED(hr), "IDirectInput_CreateDevice() failed: %s\n", DXGetErrorString8(hr));
     if (FAILED(hr)) return;
 
+    hr = IDirectInputDevice_SetCooperativeLevel(pMouse, hwnd, DISCL_NONEXCLUSIVE | DISCL_FOREGROUND);
+    ok(hr == S_OK, "SetCooperativeLevel: %s\n", DXGetErrorString8(hr));
+
     hr = IDirectInputDevice_SetDataFormat(pMouse, &c_dfDIMouse);
     ok(SUCCEEDED(hr), "IDirectInputDevice_SetDataFormat() failed: %s\n", DXGetErrorString8(hr));
     hr = IDirectInputDevice_Unacquire(pMouse);
@@ -86,6 +90,23 @@ static void test_acquire(LPDIRECTINPUT pDI, HWND hwnd)
     hr = IDirectInputDevice_Acquire(pMouse);
     ok(hr == S_FALSE, "IDirectInputDevice_Acquire() should have failed: %s\n", DXGetErrorString8(hr));
 
+    /* Foreground coop level requires window to have focus */
+    /* This should make dinput loose mouse input */
+    SetActiveWindow( 0 );
+
+    hr = IDirectInputDevice_GetDeviceState(pMouse, sizeof(m_state), &m_state);
+    todo_wine
+    ok(hr == DIERR_NOTACQUIRED, "GetDeviceState() should have failed: %s\n", DXGetErrorString8(hr));
+    /* Workaround so we can test other things. Remove when Wine is fixed */
+    IDirectInputDevice_Unacquire(pMouse);
+
+    hr = IDirectInputDevice_Acquire(pMouse);
+    ok(hr == DIERR_OTHERAPPHASPRIO, "Acquire() should have failed: %s\n", DXGetErrorString8(hr));
+
+    SetActiveWindow( hwnd );
+    hr = IDirectInputDevice_Acquire(pMouse);
+    ok(hr == S_OK, "Acquire() failed: %s\n", DXGetErrorString8(hr));
+
     if (pMouse) IUnknown_Release(pMouse);
 }