Zhiyi Zhang : user32: Use wait_graphics_driver_ready() in load_desktop_driver().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ce72f9b4263a898503c154a37df6bc9d43153f4b
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=ce72f9b4263a898503c154a37...

Author: Zhiyi Zhang 
Date:   Thu May 13 18:35:38 2021 +0800

user32: Use wait_graphics_driver_ready() in load_desktop_driver().

So that Wine doesn't have to send an extra WM_NULL message when
wait_graphics_driver_ready() is later called in
EnumDisplayDevicesW(). Also, it avoids a deadlock when
wait_graphics_driver_ready() is used in later patches.

Signed-off-by: Zhiyi Zhang 
Signed-off-by: Alexandre Julliard

---

dlls/user32/driver.c       | 2 +-
 dlls/user32/sysparams.c    | 2 +-
 dlls/user32/user_private.h | 1 +
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/dlls/user32/driver.c b/dlls/user32/driver.c
index 1c3b62eff2b..87c8cd621b3 100644
--- a/dlls/user32/driver.c
+++ b/dlls/user32/driver.c
@@ -55,7 +55,7 @@ static BOOL load_desktop_driver( HWND hwnd, HMODULE *module )
     USER_CheckNotLock();

strcpy( driver_load_error, "The explorer process failed to start." );  /* default error */
-    SendMessageW( hwnd, WM_NULL, 0, 0 );  /* wait for the desktop process to be ready */
+    wait_graphics_driver_ready();

guid_atom = HandleToULong( GetPropW( hwnd, L"__wine_display_device_guid" ));
     lstrcpyW( key, L"System\CurrentControlSet\Control\Video\{" );
diff --git a/dlls/user32/sysparams.c b/dlls/user32/sysparams.c
index 55d6d7e53a7..0b4dbfc2d78 100644
--- a/dlls/user32/sysparams.c
+++ b/dlls/user32/sysparams.c
@@ -583,7 +583,7 @@ static void release_display_device_init_mutex( HANDLE mutex )
 }

/* Wait until graphics driver is loaded by explorer */
-static void wait_graphics_driver_ready(void)
+void wait_graphics_driver_ready(void)
 {
     static BOOL ready = FALSE;

diff --git a/dlls/user32/user_private.h b/dlls/user32/user_private.h
index db082462f1b..974d18be482 100644
--- a/dlls/user32/user_private.h
+++ b/dlls/user32/user_private.h
@@ -258,6 +258,7 @@ extern void move_window_bits( HWND hwnd, struct window_surface *old_surface,
 extern void move_window_bits_parent( HWND hwnd, HWND parent, const RECT *window_rect,
                                      const RECT *valid_rects ) DECLSPEC_HIDDEN;
 extern void update_window_state( HWND hwnd ) DECLSPEC_HIDDEN;
+extern void wait_graphics_driver_ready(void) DECLSPEC_HIDDEN;
 extern void *get_hook_proc( void *proc, const WCHAR *module, HMODULE *free_module ) DECLSPEC_HIDDEN;
 extern RECT get_virtual_screen_rect(void) DECLSPEC_HIDDEN;
 extern LRESULT call_current_hook( HHOOK hhook, INT code, WPARAM wparam, LPARAM lparam ) DECLSPEC_HIDDEN;