user32: Activate an MDI child on WM_SETFOCUS as well as on WM_CHILDACTIVATE

[Dmitry Timoshkov]

Hello,

this patch should fix a problem reported in the bug #7364.

This piece of code did exist in the old MDI code, but erroneously got removed.

Changelog:
    user32: Activate an MDI child on WM_SETFOCUS as well as on WM_CHILDACTIVATE.

---
 dlls/user32/mdi.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/dlls/user32/mdi.c b/dlls/user32/mdi.c
index 23dd8e9..190e0cc 100644
--- a/dlls/user32/mdi.c
+++ b/dlls/user32/mdi.c
@@ -1480,6 +1480,11 @@ LRESULT WINAPI DefMDIChildProcW( HWND hwnd, UINT message,
         SendMessageW( client, WM_MDIDESTROY, (WPARAM)hwnd, 0 );
         return 0;
 
+    case WM_SETFOCUS:
+        if (ci->hwndActiveChild != hwnd)
+            MDI_ChildActivate( client, hwnd );
+        break;
+
     case WM_CHILDACTIVATE:
         MDI_ChildActivate( client, hwnd );
         return 0;
-- 
1.4.4.4