vcl/inc/win/salframe.h      |    1 +
 vcl/win/window/salframe.cxx |   18 ++++++++++++++++++
 2 files changed, 19 insertions(+)

New commits:
commit c31734d0e49a778cffb1fdc3cd04adb45270e1da
Author:     Miklos Vajna <vmik...@collabora.com>
AuthorDate: Wed Apr 3 12:34:38 2019 +0200
Commit:     Miklos Vajna <vmik...@collabora.com>
CommitDate: Wed Apr 3 14:09:19 2019 +0200

    tdf#114316 vcl opengl windows: fix missing context menu in full-screen mode
    
    Full-screen mode on Windows used to work by measuring the space needed
    by window caption (title) and borders, then positioning and sizing the
    window in a way, so that the caption and borders are not visible.
    
    This approach breaks at least in the OpenGL case where a large enough
    negative position results in rendering errors.
    
    Fix the problem by explicitly requesting the window to have no caption,
    so we render less outside the screen (30 pixels -> 8 pixels in my case),
    which makes the "exit fullscreen" toolbar appear, also the context menu
    is visible.
    
    Change-Id: I6cf2b9774b505d3887b958a6a018b5ae84bbe4bc
    Reviewed-on: https://gerrit.libreoffice.org/70191
    Reviewed-by: Miklos Vajna <vmik...@collabora.com>
    Tested-by: Jenkins

diff --git a/vcl/inc/win/salframe.h b/vcl/inc/win/salframe.h
index c556794b64f7..8e94f384b523 100644
--- a/vcl/inc/win/salframe.h
+++ b/vcl/inc/win/salframe.h
@@ -49,6 +49,7 @@ public:
     int                     mnMaxHeight;            // max. client height in 
pixeln
     RECT                    maFullScreenRect;       // fullscreen rect
     int                     mnFullScreenShowState;  // fullscreen restore show 
state
+    bool                    mbFullScreenCaption;    // WS_CAPTION reset in 
full screen mode.
     UINT                    mnInputLang;            // current Input Language
     UINT                    mnInputCodePage;        // current Input CodePage
     SalFrameStyleFlags      mnStyle;                // style
diff --git a/vcl/win/window/salframe.cxx b/vcl/win/window/salframe.cxx
index 6ecec9c2938f..64d505de56ff 100644
--- a/vcl/win/window/salframe.cxx
+++ b/vcl/win/window/salframe.cxx
@@ -843,6 +843,7 @@ WinSalFrame::WinSalFrame()
     mbBorder            = false;
     mbFixBorder         = false;
     mbSizeBorder        = false;
+    mbFullScreenCaption = false;
     mbFullScreen        = false;
     mbPresentation      = false;
     mbInShow            = false;
@@ -1850,6 +1851,15 @@ void WinSalFrame::ShowFullScreen( bool bFullScreen, 
sal_Int32 nDisplay )
         if ( !(GetWindowStyle( mhWnd ) & WS_VISIBLE) )
             mnShowState = SW_SHOW;
 
+        // Save caption state.
+        mbFullScreenCaption = mbCaption;
+        if (mbCaption)
+        {
+            DWORD nStyle = GetWindowStyle(mhWnd);
+            SetWindowStyle(mhWnd, nStyle & ~WS_CAPTION);
+            mbCaption = false;
+        }
+
         // set window to screen size
         ImplSalFrameFullScreenPos( this, true );
     }
@@ -1865,6 +1875,14 @@ void WinSalFrame::ShowFullScreen( bool bFullScreen, 
sal_Int32 nDisplay )
             SetWindowExStyle( mhWnd, GetWindowExStyle( mhWnd ) | 
WS_EX_TOOLWINDOW );
         mbFullScreenToolWin = false;
 
+        // Restore caption state.
+        if (mbFullScreenCaption)
+        {
+            DWORD nStyle = GetWindowStyle(mhWnd);
+            SetWindowStyle(mhWnd, nStyle | WS_CAPTION);
+        }
+        mbCaption = mbFullScreenCaption;
+
         SetWindowPos( mhWnd, nullptr,
                       maFullScreenRect.left,
                       maFullScreenRect.top,
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