Commit: c6d1ae2f8aa246c009e3cbace0ab0860be8acf3a
Author: Brecht Van Lommel
Date:   Wed Apr 3 16:01:20 2019 +0200
Branches: master
https://developer.blender.org/rBc6d1ae2f8aa246c009e3cbace0ab0860be8acf3a

Fix T62780 , T59802, T57648: fullscreen window issues on Windows.

This fixes popups and preferences appearing behind the main window, as
well as flickering artifacts when Blender is in fullscreen.

Patch contributed by phocomelus.

Differential Revision: https://developer.blender.org/D4634

===================================================================

M       intern/ghost/intern/GHOST_WindowWin32.cpp

===================================================================

diff --git a/intern/ghost/intern/GHOST_WindowWin32.cpp 
b/intern/ghost/intern/GHOST_WindowWin32.cpp
index e1be9a0b2c7..5849d620b23 100644
--- a/intern/ghost/intern/GHOST_WindowWin32.cpp
+++ b/intern/ghost/intern/GHOST_WindowWin32.cpp
@@ -106,7 +106,7 @@ GHOST_WindowWin32::GHOST_WindowWin32(GHOST_SystemWin32 
*system,
                // MSVC 2012+ returns bogus values from GetSystemMetrics, bug 
in Windows
                // 
http://connect.microsoft.com/VisualStudio/feedback/details/753224/regression-getsystemmetrics-delivers-different-values
                RECT cxrect = {0, 0, 0, 0};
-               AdjustWindowRectEx(&cxrect, WS_POPUP | WS_CLIPSIBLINGS | 
WS_CLIPCHILDREN | WS_THICKFRAME | WS_DLGFRAME, FALSE, 0);
+               AdjustWindowRectEx(&cxrect, WS_CLIPSIBLINGS | WS_CLIPCHILDREN | 
WS_THICKFRAME | WS_DLGFRAME, FALSE, 0);
 
                int cxsizeframe = abs(cxrect.bottom);
                int cysizeframe = abs(cxrect.left);
@@ -177,7 +177,7 @@ GHOST_WindowWin32::GHOST_WindowWin32(GHOST_SystemWin32 
*system,
                m_hWnd = ::CreateWindowW(
                    s_windowClassName,          // pointer to registered class 
name
                    title_16,                   // pointer to window name
-                   WS_POPUP | WS_MAXIMIZE,     // window style
+                   WS_MAXIMIZE,                // window style
                    left,                       // horizontal position of window
                    top,                        // vertical position of window
                    width,                      // window width
@@ -546,7 +546,7 @@ GHOST_TWindowState GHOST_WindowWin32::getState() const
        }
        else if (::IsZoomed(m_hWnd)) {
                LONG_PTR result = ::GetWindowLongPtr(m_hWnd, GWL_STYLE);
-               if ((result & (WS_POPUP | WS_MAXIMIZE)) != (WS_POPUP | 
WS_MAXIMIZE))
+               if ((result & (WS_DLGFRAME | WS_MAXIMIZE)) == (WS_DLGFRAME | 
WS_MAXIMIZE))
                        state = GHOST_kWindowStateMaximized;
                else
                        state = GHOST_kWindowStateFullScreen;
@@ -604,7 +604,7 @@ GHOST_TSuccess 
GHOST_WindowWin32::setState(GHOST_TWindowState state)
                        wp.showCmd = SW_SHOWMAXIMIZED;
                        wp.ptMaxPosition.x = 0;
                        wp.ptMaxPosition.y = 0;
-                       ::SetWindowLongPtr(m_hWnd, GWL_STYLE, WS_POPUP | 
WS_MAXIMIZE);
+                       ::SetWindowLongPtr(m_hWnd, GWL_STYLE, WS_MAXIMIZE);
                        break;
                case GHOST_kWindowStateEmbedded:
                        ::SetWindowLongPtr(m_hWnd, GWL_STYLE, WS_CHILD);

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