Add comments to explain why r5618 only partly works as expected under…

… Qt 4.1.0 (i.e. the branches are expanded but the selected item is not scrolled into view).

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@5626 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/widgets/projectionselector/qgsprojectionselector.cpp

@@ -203,6 +203,11 @@ void QgsProjectionSelector::applySRSNameSelection()
     if (nodes.count() > 0)
     {
       lstCoordinateSystems->setCurrentItem(nodes.first());
+
+      // The following seems to be broken in Qt 4.1.0:
+      // It only works if the widget is already visible.
+      // (Which makes it really hard to scroll to an
+      // item before you exec() the widget)
       lstCoordinateSystems->scrollToItem(nodes.first());
     }
     else // unselect the selected item to avoid confusing the user
@@ -230,6 +235,11 @@ void QgsProjectionSelector::applySRSIDSelection()
     if (nodes.count() > 0)
     {
       lstCoordinateSystems->setCurrentItem(nodes.first());
+
+      // The following seems to be broken in Qt 4.1.0:
+      // It only works if the widget is already visible.
+      // (Which makes it really hard to scroll to an
+      // item before you exec() the widget)
       lstCoordinateSystems->scrollToItem(nodes.first());
     }
     else // unselect the selected item to avoid confusing the user
@@ -784,6 +794,11 @@ void QgsProjectionSelector::coordinateSystemSelected( QTreeWidgetItem * theItem)
     {
       myDescription+=(myProjString);
     }
+
+    // The following seems to be broken in Qt 4.1.0:
+    // It only works if the widget is already visible.
+    // (Which makes it really hard to scroll to an
+    // item before you exec() the widget)
     lstCoordinateSystems->scrollToItem(theItem);
     teProjection->setText(myDescription);
   }