user32: Allow making window visible by WM_SETREDRAW message.

dlls/user32/win.c

@@ -774,10 +774,7 @@ ULONG WIN_SetStyle( HWND hwnd, ULONG set_bits, ULONG clear_bits )
 
     if (ok && ((style.styleOld ^ style.styleNew) & WS_VISIBLE))
     {
-        /* Some apps try to make their window visible through WM_SETREDRAW.
-         * Only do that if the window was never explicitly hidden,
-         * because Steam messes with WM_SETREDRAW after hiding its windows. */
-        made_visible = !(win->flags & WIN_HIDDEN) && (style.styleNew & WS_VISIBLE);
+        made_visible = (style.styleNew & WS_VISIBLE) != 0;
         invalidate_dce( win, NULL );
     }
     WIN_ReleasePtr( win );
@@ -2499,7 +2496,7 @@ LONG_PTR WIN_SetWindowLong( HWND hwnd, INT offset, UINT size, LONG_PTR newval, B
     if ((offset == GWL_STYLE && ((style.styleOld ^ style.styleNew) & WS_VISIBLE)) ||
         (offset == GWL_EXSTYLE && ((style.styleOld ^ style.styleNew) & WS_EX_LAYERED)))
     {
-        made_visible = !(wndPtr->flags & WIN_HIDDEN) && (wndPtr->dwStyle & WS_VISIBLE);
+        made_visible = (wndPtr->dwStyle & WS_VISIBLE) != 0;
         invalidate_dce( wndPtr, NULL );
     }
     WIN_ReleasePtr( wndPtr );

dlls/user32/win.h

@@ -76,7 +76,6 @@ typedef struct tagWND
 #define WIN_ISUNICODE             0x0010 /* Window is Unicode */
 #define WIN_NEEDS_SHOW_OWNEDPOPUP 0x0020 /* WM_SHOWWINDOW:SC_SHOW must be sent in the next ShowOwnedPopup call */
 #define WIN_CHILDREN_MOVED        0x0040 /* children may have moved, ignore stored positions */
-#define WIN_HIDDEN                0x0080 /* hidden by an explicit SWP_HIDEWINDOW (as opposed to WM_SETREDRAW) */
 
   /* Window functions */
 extern HWND get_hwnd_message_parent(void) DECLSPEC_HIDDEN;

dlls/user32/winpos.c

@@ -1923,9 +1923,6 @@ static BOOL fixup_flags( WINDOWPOS *winpos )
     parent = GetAncestor( winpos->hwnd, GA_PARENT );
     if (!IsWindowVisible( parent )) winpos->flags |= SWP_NOREDRAW;
 
-    if (winpos->flags & SWP_HIDEWINDOW) wndPtr->flags |= WIN_HIDDEN;
-    else if (winpos->flags & SWP_SHOWWINDOW) wndPtr->flags &= ~WIN_HIDDEN;
-
     if (wndPtr->dwStyle & WS_VISIBLE) winpos->flags &= ~SWP_SHOWWINDOW;
     else
     {