fixed the dialogue history topic selection

apps/openmw/mwgui/dialogue.cpp

@@ -49,8 +49,15 @@ DialogueWindow::DialogueWindow(WindowManager& parWindowManager,MWWorld::Environm
     //History view
     getWidget(history, "History");
     history->setOverflowToTheLeft(true);
-    history->getClient()->eventMouseButtonClick += MyGUI::newDelegate(this, &DialogueWindow::onHistoryClicked);
     history->setMaxTextLength(1000000);
+    Widget* eventbox;
+
+    //An EditBox cannot receive mouse click events, so we use an
+    //invisible widget on top of the editbox to receive them
+    /// \todo scrolling the dialogue history with the mouse wheel doesn't work using this solution
+    getWidget(eventbox, "EventBox");
+    eventbox->eventMouseButtonClick += MyGUI::newDelegate(this, &DialogueWindow::onHistoryClicked);
+    
     //Topics list
     getWidget(topicsList, "TopicsList");
     topicsList->setScrollVisible(true);
@@ -68,7 +75,7 @@ DialogueWindow::DialogueWindow(WindowManager& parWindowManager,MWWorld::Environm
 
 void DialogueWindow::onHistoryClicked(MyGUI::Widget* _sender)
 {
-    ISubWidgetText* t = history->getSubWidgetText();
+    ISubWidgetText* t = history->getClient()->getSubWidgetText();
     if(t == nullptr)
         return;
 

apps/openmw/mwgui/dialogue_history.hpp

@@ -5,7 +5,7 @@
 namespace MWGui
 {
     using namespace MyGUI;
-    class DialogeHistory : public MyGUI::Edit
+    class DialogeHistory : public MyGUI::EditBox
     {
         MYGUI_RTTI_DERIVED( DialogeHistory )
         public:

extern/mygui_3.0.1/openmw_resources/openmw_dialogue_window_layout.xml

@@ -15,6 +15,8 @@
             <Property key="Text_FontHeight" value="18"/>
             <Property key="Edit_MultiLine" value="1" />
             <Property key="Edit_VisibleVScroll" value="1" />
+            <!-- invisible box for receiving mouse events -->
+            <Widget type="Widget" skin="" position="0 0 400 375" name="EventBox" align="ALIGN_LEFT ALIGN_TOP STRETCH"/>
         </Widget>
 
 		<!-- The disposition bar-->