diff --git a/ctl/ctlTreeJSON.cpp b/ctl/ctlTreeJSON.cpp
index 900f234..7dfb264 100644
--- a/ctl/ctlTreeJSON.cpp
+++ b/ctl/ctlTreeJSON.cpp
@@ -71,7 +71,7 @@ void ctlTreeJSON::OnChar(wxKeyEvent& event) {
   <p><b>Ctrl-Z</b> - Return source context node.</p>
 </body>
 </html>)";
-		showHelpHtml(this,helpstr,screenPos, wxSize(450,300));
+		showHelpHtml((wxWindow *)winMain,helpstr,screenPos, wxSize(450,300));
 		return;
 	}
 	if (event.GetKeyCode() == WXK_CONTROL_F) {
diff --git a/include/utils/misc.h b/include/utils/misc.h
index 0630bc8..7b93cac 100644
--- a/include/utils/misc.h
+++ b/include/utils/misc.h
@@ -280,6 +280,7 @@ wxString qtIdent(const wxString &value);    // add " if necessary
 wxString qtTypeIdent(const wxString &value);    // add " if necessary
 
 bool make_identifier(const wxString &strname, wxString &s, wxString &n, bool islower);
+wxSize getScreenSizeForPoint(const wxPoint screenPos);
 void showHelpHtml(wxWindow *parent, const wxString &htmlHelp,wxPoint screenPos, wxSize size);
 
 #endif
diff --git a/utils/misc.cpp b/utils/misc.cpp
index 1c51506..f842c8f 100644
--- a/utils/misc.cpp
+++ b/utils/misc.cpp
@@ -1484,10 +1484,8 @@ bool make_identifier(const wxString &strname, wxString &s, wxString &n, bool isl
 	return true;
 }
 
-//show help window
-void showHelpHtml(wxWindow *parent, const wxString &htmlHelp,wxPoint screenPos, wxSize size) {
-    FunctionPGHelper fh(htmlHelp);
-    wxString key = "content";
+// Get display for ScreenPoint
+wxSize getScreenSizeForPoint(const wxPoint screenPos) {
 	// screen size
 		wxPoint posScreen;
 		wxSize sizeScreen;
@@ -1504,7 +1502,14 @@ void showHelpHtml(wxWindow *parent, const wxString &htmlHelp,wxPoint screenPos,
 			posScreen = wxPoint(0, 0);
 			sizeScreen = wxGetDisplaySize();
 		}
+		return sizeScreen;
+}
+//show help window
+void showHelpHtml(wxWindow *parent, const wxString &htmlHelp,wxPoint screenPos, wxSize size) {
+    FunctionPGHelper fh(htmlHelp);
+    wxString key = "content";
 
+	wxSize sizeScreen=getScreenSizeForPoint(screenPos);
     wxSize rr(350, 70);
 	if (size.x!=-1) rr=size;
     popuphelp *m_Popup = new popuphelp(parent, key, &fh, screenPos, rr);
@@ -1526,7 +1531,7 @@ void showHelpHtml(wxWindow *parent, const wxString &htmlHelp,wxPoint screenPos,
         wxRect r = m_Popup->GetScreenRect();
         m_Popup->Popup();
     }
-
+	//m_Popup->SetFocus();
 
 }