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GDK W32: Change WM_SYSMENU style switch logic

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Instead of checking for window state and giving it extra styles that
fit, just give it all styles that it is missing. It turned out that
otherwise it is impossible to, for example, restore a maximized window
via sysmenu. Also, be more flexible towards GDK/WM window state mismatches
and consider the window minimized/maximized if *either* GDK or WM thinks so.

https://bugzilla.gnome.org/show_bug.cgi?id=776485
This commit is contained in:
Руслан Ижбулатов 2016-12-25 17:48:20 +00:00
parent 9e5fc16307
commit e1240b42ed
1 changed files with 11 additions and 5 deletions
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16
gdk/win32/gdkevents-win32.c
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@ -1977,22 +1977,28 @@ handle_wm_sysmenu (GdkWindow *window, MSG *msg, gint *ret_valp)
style = GetWindowLongPtr (msg->hwnd, GWL_STYLE);
maximized = IsZoomed (msg->hwnd);
minimized = IsIconic (msg->hwnd);
maximized = IsZoomed (msg->hwnd) || (style & WS_MAXIMIZE);
minimized = IsIconic (msg->hwnd) || (style & WS_MINIMIZE);
additional_styles = 0;
if (!(style & WS_SYSMENU))
additional_styles |= WS_SYSMENU;
if (!maximized && !(style & WS_MAXIMIZEBOX))
if (!(style & WS_MAXIMIZEBOX))
additional_styles |= WS_MAXIMIZEBOX;
if (!minimized && !(style & WS_MINIMIZEBOX))
if (!(style & WS_MINIMIZEBOX))
additional_styles |= WS_MINIMIZEBOX;
if (!minimized && !maximized && !(style & WS_SIZEBOX))
if (!(style & WS_SIZEBOX))
additional_styles |= WS_SIZEBOX;
if (!(style & WS_DLGFRAME))
additional_styles |= WS_DLGFRAME;
if (!(style & WS_BORDER))
additional_styles |= WS_BORDER;
if (additional_styles == 0)
/* The caller will eventually pass this to DefWindowProc (),
* only without the style dance, which isn't needed, as it turns out.