phdesign.NppToolBucket.FindAndReplace.IsViewVisible C# (CSharp) Method

        private bool IsViewVisible(int targetView)
        {
            int currentView;
            Win32.SendMessage(PluginBase.nppData._nppHandle, NppMsg.NPPM_GETCURRENTSCINTILLA, 0, out currentView);
            // If the view is active it must be visible
            if (currentView == targetView) return true;
            var currentDocIndex = (int)Win32.SendMessage(PluginBase.nppData._nppHandle, NppMsg.NPPM_GETCURRENTDOCINDEX, 0, currentView);
            var currentDocIndexTargetView = (int)Win32.SendMessage(PluginBase.nppData._nppHandle, NppMsg.NPPM_GETCURRENTDOCINDEX, 0, targetView);

            // Try switching to other view, if that fails it must be hidden.
            Win32.SendMessage(PluginBase.nppData._nppHandle, NppMsg.NPPM_ACTIVATEDOC, targetView, currentDocIndexTargetView);
            int newView;
            Win32.SendMessage(PluginBase.nppData._nppHandle, NppMsg.NPPM_GETCURRENTSCINTILLA, 0, out newView);

            // Restore active doc
            Win32.SendMessage(PluginBase.nppData._nppHandle, NppMsg.NPPM_ACTIVATEDOC, currentView, currentDocIndex);

            return newView == targetView;
        }