[PATCH] Update monitor state when it is detached

[Sameeh Jubran <sameeh@xxxxxxxxxx>]

The monitor detached state is being set but not updated, in order to update it
we should call ChangeDisplaySettingsEx after setting the appropriate
flags along with width and height that are set to 0.

Signed-off-by: Sameeh Jubran <sameeh@xxxxxxxxxx>
---
 vdagent/desktop_layout.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/vdagent/desktop_layout.cpp b/vdagent/desktop_layout.cpp
index a7666ca..c0632cc 100644
--- a/vdagent/desktop_layout.cpp
+++ b/vdagent/desktop_layout.cpp
@@ -279,7 +279,10 @@ bool DesktopLayout::init_dev_mode(LPCTSTR dev_name, DEVMODE* dev_mode, DisplayMo
     if (!mode || !mode->_attached) {
         //Detach monitor
         dev_mode->dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_POSITION;
-        return true;
+        dev_mode->dmPelsWidth = 0;
+        dev_mode->dmPelsHeight = 0;
+        ret = ChangeDisplaySettingsEx(dev_name, dev_mode, NULL, CDS_UPDATEREGISTRY, NULL);
+        return (ret == DISP_CHANGE_SUCCESSFUL);
     }
 
     hdc = CreateDC(dev_name, NULL, NULL, NULL);
-- 
2.7.4

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