win32u: Update the display cache when virtual desktop mode changes.

We update the cache in NtUserCreateDesktopEx, as it may change existing thread desktop flags, but we need to do it as well when a new desktop is created while still detached, then attached to a thread through NtUserSetThreadDesktop. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55146

win32u: Update the display cache when virtual desktop mode changes.
a0cd5e05 · Rémi Bernon · Alexandre Julliard · 05b21755 · a0cd5e05
Commit a0cd5e05 authored Jun 29, 2023 by Rémi Bernon Committed by Alexandre Julliard Jun 29, 2023
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winstation.c dlls/win32u/winstation.c +2 -1

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--- a/dlls/win32u/winstation.c
+++ b/dlls/win32u/winstation.c
@@ -248,7 +248,7 @@ HDESK WINAPI NtUserGetThreadDesktop( DWORD thread )
 */
 BOOL WINAPI NtUserSetThreadDesktop( HDESK handle )
 {
-    BOOL ret;
+    BOOL ret, was_virtual_desktop = is_virtual_desktop();

    SERVER_START_REQ( set_thread_desktop )
    {
@@ -264,6 +264,7 @@ BOOL WINAPI NtUserSetThreadDesktop( HDESK handle )
        thread_info->client_info.top_window = 0;
        thread_info->client_info.msg_window = 0;
        if (key_state_info) key_state_info->time = 0;
+        if (was_virtual_desktop != is_virtual_desktop()) update_display_cache( TRUE );
    }
    return ret;
 }