restored IsDBWinViewerActive

mriffey · Sep 9, 2019 · e45ec83 · e45ec83
1 parent 283f28e
commit e45ec83
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diff --git a/DebugView++Lib/DBWinBuffer.cpp b/DebugView++Lib/DBWinBuffer.cpp
@@ -26,6 +26,12 @@ bool IsWindowsVistaOrGreater()
     return (osvi.dwMajorVersion > 5);
 }
 
+bool IsDBWinViewerActive()
+{
+    Win32::Handle hMap(::OpenFileMapping(FILE_MAP_READ, 0, L"DBWIN_BUFFER"));
+    return hMap != nullptr;
+}
+
 bool HasGlobalDBWinReaderRights()
 {
     Win32::Handle hMap(::CreateFileMapping(nullptr, nullptr, PAGE_READWRITE, 0, sizeof(DbWinBuffer), L"Global\\DBWIN_BUFFER"));

diff --git a/include/DebugView++Lib/DBWinBuffer.h b/include/DebugView++Lib/DBWinBuffer.h
@@ -20,6 +20,7 @@ struct DbWinBuffer
 static_assert(sizeof(DbWinBuffer) == 4096, "DBWIN_BUFFER size must be 4096");
 
 bool IsWindowsVistaOrGreater();
+bool IsDBWinViewerActive();
 bool HasGlobalDBWinReaderRights();
 
 } // namespace debugviewpp