[PATCH] user32: Keep toplevel minimized windows offscreen if they're already.

[Gabriel Ivăncescu]

Some applications (e.g. Lego Worlds) use (-32000,-32000) to determine
whether a window is minimized.

Signed-off-by: Gabriel Ivăncescu <gabrielopcode at gmail.com>
---
 dlls/user32/tests/win.c | 52 +++++++++++++++++++++++++++++++++++++++++
 dlls/user32/winpos.c    |  8 +++++++
 2 files changed, 60 insertions(+)

diff --git a/dlls/user32/tests/win.c b/dlls/user32/tests/win.c
index 843da89..19a0db2 100644
--- a/dlls/user32/tests/win.c
+++ b/dlls/user32/tests/win.c
@@ -11593,6 +11593,58 @@ todo_wine
     ok(EqualRect(&wp.rcNormalPosition, &orig), "got normal pos %s\n",
         wine_dbgstr_rect(&wp.rcNormalPosition));
 
+    wp.flags = WPF_SETMINPOSITION;
+    wp.showCmd = SW_NORMAL;
+    wp.ptMinPosition.x = wp.ptMinPosition.y = 100;
+    wp.ptMaxPosition.x = wp.ptMaxPosition.y = 100;
+    wp.rcNormalPosition = orig;
+    ret = SetWindowPlacement(hwnd, &wp);
+    ok(ret, "failed to set window placement, error %u\n", GetLastError());
+
+    ShowWindow(hwnd, SW_MINIMIZE);
+
+    ret = GetWindowPlacement(hwnd, &wp);
+    ok(ret, "failed to get window placement, error %u\n", GetLastError());
+    ok(wp.showCmd == SW_SHOWMINIMIZED, "got show cmd %u\n", wp.showCmd);
+    ok(wp.ptMinPosition.x == -32000 && wp.ptMinPosition.y == -32000,
+        "got minimized pos (%d,%d)\n", wp.ptMinPosition.x, wp.ptMinPosition.y);
+todo_wine
+    ok(wp.ptMaxPosition.x == -1 && wp.ptMaxPosition.y == -1,
+        "got maximized pos (%d,%d)\n", wp.ptMaxPosition.x, wp.ptMaxPosition.y);
+    ok(EqualRect(&wp.rcNormalPosition, &orig), "got normal pos %s\n",
+        wine_dbgstr_rect(&wp.rcNormalPosition));
+
+    ret = SetWindowPos(hwnd, NULL, 100, 100, 151, 151, SWP_NOACTIVATE | SWP_NOZORDER);
+    ok(ret, "failed to set window pos, error %u\n", GetLastError());
+
+    ret = GetWindowPlacement(hwnd, &wp);
+    ok(ret, "failed to get window placement, error %u\n", GetLastError());
+    ok(wp.showCmd == SW_SHOWMINIMIZED, "got show cmd %u\n", wp.showCmd);
+    ok(wp.ptMinPosition.x == -32000 && wp.ptMinPosition.y == -32000,
+        "got minimized pos (%d,%d)\n", wp.ptMinPosition.x, wp.ptMinPosition.y);
+todo_wine
+    ok(wp.ptMaxPosition.x == -1 && wp.ptMaxPosition.y == -1,
+        "got maximized pos (%d,%d)\n", wp.ptMaxPosition.x, wp.ptMaxPosition.y);
+    ok(EqualRect(&wp.rcNormalPosition, &orig), "got normal pos %s\n",
+        wine_dbgstr_rect(&wp.rcNormalPosition));
+    GetWindowRect(hwnd, &rect);
+    ok(rect.left == -32000 && rect.top == -32000, "got window rect %s\n", wine_dbgstr_rect(&rect));
+
+    ShowWindow(hwnd, SW_SHOWNORMAL);
+
+    ret = GetWindowPlacement(hwnd, &wp);
+    ok(ret, "failed to get window placement, error %u\n", GetLastError());
+    ok(wp.showCmd == SW_NORMAL, "got show cmd %u\n", wp.showCmd);
+    ok(wp.ptMinPosition.x == -32000 && wp.ptMinPosition.y == -32000,
+        "got minimized pos (%d,%d)\n", wp.ptMinPosition.x, wp.ptMinPosition.y);
+todo_wine
+    ok(wp.ptMaxPosition.x == -1 && wp.ptMaxPosition.y == -1,
+        "got maximized pos (%d,%d)\n", wp.ptMaxPosition.x, wp.ptMaxPosition.y);
+    ok(EqualRect(&wp.rcNormalPosition, &orig), "got normal pos %s\n",
+        wine_dbgstr_rect(&wp.rcNormalPosition));
+    GetWindowRect(hwnd, &rect);
+    ok(EqualRect(&rect, &orig), "got window rect %s\n", wine_dbgstr_rect(&rect));
+
     DestroyWindow(hwnd);
 }
 
diff --git a/dlls/user32/winpos.c b/dlls/user32/winpos.c
index b45b74c..3ccd939 100644
--- a/dlls/user32/winpos.c
+++ b/dlls/user32/winpos.c
@@ -1688,6 +1688,14 @@ static BOOL SWP_DoWinPosChanging( WINDOWPOS *pWinpos, RECT *old_window_rect, REC
     }
     if (!(pWinpos->flags & SWP_NOMOVE))
     {
+        /* If the window is toplevel minimized off-screen, force keep it there */
+        if ((wndPtr->dwStyle & WS_MINIMIZE) &&
+             wndPtr->window_rect.left <= -32000 && wndPtr->window_rect.top <= -32000 &&
+            (!wndPtr->parent || wndPtr->parent == GetDesktopWindow()))
+        {
+            pWinpos->x = -32000;
+            pWinpos->y = -32000;
+        }
         new_window_rect->left    = pWinpos->x;
         new_window_rect->top     = pWinpos->y;
         new_window_rect->right  += pWinpos->x - old_window_rect->left;
-- 
2.21.0