Make insertion of node text on double click customizable, per tree style options menu. See http://www.heidisql.com/forum.php?t=16104

out/locale/en/LC_MESSAGES/default.po

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: HeidiSQL\n"
 "POT-Creation-Date: 2012-11-05 21:40\n"
-"PO-Revision-Date: 2015-11-03 07:26+0100\n"
+"PO-Revision-Date: 2015-11-11 21:25+0100\n"
 "Last-Translator: Ansgar Becker <anse@heidisql.com>\n"
 "Language-Team: English (http://www.transifex.com/projects/p/heidisql/"
 "language/en/)\n"
@@ -5966,3 +5966,6 @@ msgstr "GUI font (requires restart):"
 
 msgid "Default system font"
 msgstr "Default system font"
+
+msgid "Doubleclick inserts node text"
+msgstr "Doubleclick inserts node text"

source/helpers.pas

@@ -167,7 +167,7 @@ type
     asFieldEditorSet, asFieldNullBackground, asRowBackgroundEven, asRowBackgroundOdd, asGroupTreeObjects, asDisplayObjectSizeColumn, asSQLfile,
     asActionShortcut1, asActionShortcut2, asHighlighterForeground, asHighlighterBackground, asHighlighterStyle,
     asListColWidths, asListColsVisible, asListColPositions, asListColSort, asSessionFolder,
-    asRecentFilter, asTimestampColumns, asDateTimeEditorCursorPos, asAppLanguage, asAutoExpand, asForeignDropDown, asQueryHistoryEnabled,
+    asRecentFilter, asTimestampColumns, asDateTimeEditorCursorPos, asAppLanguage, asAutoExpand, asDoubleClickInsertsNodeText, asForeignDropDown, asQueryHistoryEnabled,
     asColumnSelectorWidth, asColumnSelectorHeight, asDonatedEmail, asFavoriteObjects, asFavoriteObjectsOnly, asFullTableStatus, asLineBreakStyle,
     asUnused);
   TAppSetting = record
@@ -3350,6 +3350,7 @@ begin
   InitSetting(asDateTimeEditorCursorPos,          'DateTimeEditor_CursorPos_Type%s',       0);
   InitSetting(asAppLanguage,                      'Language',                              0, False, '');
   InitSetting(asAutoExpand,                       'AutoExpand',                            0, False);
+  InitSetting(asDoubleClickInsertsNodeText,       'DoubleClickInsertsNodeText',            0, True);
   InitSetting(asForeignDropDown,                  'ForeignDropDown',                       0, True);
   InitSetting(asQueryHistoryEnabled,              'QueryHistory',                          0, True);
   InitSetting(asColumnSelectorWidth,              'ColumnSelectorWidth',                   200, False, '');

source/main.dfm

@@ -164,6 +164,7 @@ object MainForm: TMainForm
         OnAfterCellPaint = DBtreeAfterCellPaint
         OnBeforeCellPaint = DBtreeBeforeCellPaint
         OnChange = DBtreeChange
+        OnDblClick = DBtreeDblClick
         OnExpanded = DBtreeExpanded
         OnExpanding = DBtreeExpanding
         OnFocusChanged = DBtreeFocusChanged
@@ -9239,6 +9240,10 @@ object MainForm: TMainForm
         Caption = 'Auto expand on click'
         OnClick = menuAutoExpandClick
       end
+      object menuDoubleClickInsertsNodeText: TMenuItem
+        Caption = 'Doubleclick inserts node text'
+        OnClick = menuDoubleClickInsertsNodeTextClick
+      end
       object menuSelectBGColor: TMenuItem
         Action = actSelectTreeBackground
       end

source/main.pas

@@ -614,6 +614,7 @@ type
     DataGUIDwobraces: TMenuItem;
     N11: TMenuItem;
     N12: TMenuItem;
+    menuDoubleClickInsertsNodeText: TMenuItem;
     procedure actCreateDBObjectExecute(Sender: TObject);
     procedure menuConnectionsPopup(Sender: TObject);
     procedure actExitApplicationExecute(Sender: TObject);
@@ -970,6 +971,8 @@ type
     procedure actSaveSynMemoToTextfileExecute(Sender: TObject);
     procedure ApplicationEvents1Idle(Sender: TObject; var Done: Boolean);
     procedure editDatabaseTableFilterRightButtonClick(Sender: TObject);
+    procedure menuDoubleClickInsertsNodeTextClick(Sender: TObject);
+    procedure DBtreeDblClick(Sender: TObject);
   private
     // Executable file details
     FAppVerMajor: Integer;
@@ -1720,6 +1723,8 @@ begin
     menuShowSizeColumn.Click;
   if AppSettings.ReadBool(asAutoExpand) then
     menuAutoExpand.Click;
+  if AppSettings.ReadBool(asDoubleClickInsertsNodeText) then
+    menuDoubleClickInsertsNodeText.Click;
 
   // Restore width of columns of all VirtualTrees
   RestoreListSetup(ListDatabases);
@@ -6683,6 +6688,17 @@ begin
 end;
 
 
+procedure TMainForm.menuDoubleClickInsertsNodeTextClick(Sender: TObject);
+var
+  Item: TMenuItem;
+begin
+  // Activate doubleclick node feature
+  Item := Sender as TMenuItem;
+  Item.Checked := not Item.Checked;
+  AppSettings.ResetPath;
+  AppSettings.WriteBool(asDoubleClickInsertsNodeText, Item.Checked);
+end;
+
 {**
   Load snippet at cursor
 }
@@ -7957,6 +7973,22 @@ begin
 end;
 
 
+procedure TMainForm.DBtreeDblClick(Sender: TObject);
+var
+  DBObj: PDBObject;
+  m: TSynMemo;
+begin
+  // Paste DB or table name into query window on treeview double click.
+  if AppSettings.ReadBool(asDoubleClickInsertsNodeText) and QueryTabActive and Assigned(DBtree.FocusedNode) then begin
+    DBObj := DBtree.GetNodeData(DBtree.FocusedNode);
+    if DBObj.NodeType in [lntDb, lntTable..lntEvent] then begin
+      m := ActiveQueryMemo;
+      m.DragDrop(Sender, m.CaretX, m.CaretY);
+    end;
+  end;
+end;
+
+
 procedure TMainForm.DBtreeExpanded(Sender: TBaseVirtualTree;
   Node: PVirtualNode);
 begin