Fix maximization behavior on Windows (Bug#16300).

Fix maximization behavior on Windows (Bug#16300).
* w32fns.c (w32_fullscreen_rect): Don't handle
FULLSCREEN_MAXIMIZED and FULLSCREEN_NONE specially.
* w32term.c (w32fullscreen_hook): Use SetWindowPlacement instead
of SetWindowPos.  Restore last placement also when leaving
FULLSCREEN_HEIGHT and FULLSCREEN_WIDTH.  Call ShowWindow in all
but the FULLSCREEN_BOTH case.

1 files changed, 15 insertions, 8 deletions

diff --git a/src/w32term.c b/src/w32term.c
index 91235507b21..a59d5d6edc0 100644
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -5564,18 +5564,22 @@ w32fullscreen_hook (struct frame *f)
       if (FRAME_PREV_FSMODE (f) == FULLSCREEN_BOTH)
         {
           SetWindowLong (hwnd, GWL_STYLE, dwStyle | WS_OVERLAPPEDWINDOW);
-          SetWindowPos (hwnd, NULL, 0, 0, 0, 0,
-                        SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
-                        SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
-        }
+          SetWindowPlacement (hwnd, &FRAME_NORMAL_PLACEMENT (f));
+        }
+      else if (FRAME_PREV_FSMODE (f) == FULLSCREEN_HEIGHT
+               || FRAME_PREV_FSMODE (f) == FULLSCREEN_WIDTH)
+        SetWindowPlacement (hwnd, &FRAME_NORMAL_PLACEMENT (f));
 
-      w32_fullscreen_rect (hwnd, f->want_fullscreen,
-                           FRAME_NORMAL_PLACEMENT (f).rcNormalPosition, &rect);
       FRAME_PREV_FSMODE (f) = f->want_fullscreen;
-      if (f->want_fullscreen == FULLSCREEN_MAXIMIZED)
-        PostMessage (FRAME_W32_WINDOW (f), WM_SYSCOMMAND, 0xf030, 0);
+
+      if (f->want_fullscreen == FULLSCREEN_NONE)
+        ShowWindow (hwnd, SW_SHOWNORMAL);
+      else if (f->want_fullscreen == FULLSCREEN_MAXIMIZED)
+        ShowWindow (hwnd, SW_MAXIMIZE);
       else if (f->want_fullscreen == FULLSCREEN_BOTH)
         {
+          w32_fullscreen_rect (hwnd, f->want_fullscreen,
+                               FRAME_NORMAL_PLACEMENT (f).rcNormalPosition, &rect);
           SetWindowLong (hwnd, GWL_STYLE, dwStyle & ~WS_OVERLAPPEDWINDOW);
           SetWindowPos (hwnd, HWND_TOP, rect.left, rect.top,
                         rect.right - rect.left, rect.bottom - rect.top,
@@ -5583,6 +5587,9 @@ w32fullscreen_hook (struct frame *f)
         }
       else
         {
+          ShowWindow (hwnd, SW_SHOWNORMAL);
+          w32_fullscreen_rect (hwnd, f->want_fullscreen,
+                               FRAME_NORMAL_PLACEMENT (f).rcNormalPosition, &rect);
           SetWindowPos (hwnd, HWND_TOP, rect.left, rect.top,
                         rect.right - rect.left, rect.bottom - rect.top, 0);
         }