Most seems to work. Multi threading is not optimal

however some points use a timeout with select or wait_for
to poll a condition at the same time.

pglab/ASyncDBConnection.cpp

@@ -130,7 +130,11 @@ bool ASyncDBConnection::Thread::makeConnection()
 	auto keywords = m_config.getKeywords();
     auto values = m_config.getValues();
 #if true
-    return m_connection.connect(keywords, values, 0);
+    bool result = m_connection.connect(keywords, values, 0);
+    if (result) {
+        doStateCallback(State::Connected);
+    }
+    return result;
 #else
 	while (!terminateRequested) {
 
@@ -234,11 +238,12 @@ void ASyncDBConnection::Thread::doStateCallback(State state)
 
 void ASyncDBConnection::Thread::waitForAndSendCommand()
 {
+    using namespace std::chrono_literals;
     // lock the data
     std::unique_lock<std::mutex> lk(m_commandQueue.m_mutex);
     if (m_commandQueue.m_queue.empty()) {
         // no data wait till there is data
-        m_commandQueue.m_newEvent.wait(lk);
+        m_commandQueue.m_newEvent.wait_for(lk, 1000ms);
         // can we use the predicate to reimplement the stop function???, []{return ready;});
         
     }
@@ -266,30 +271,26 @@ void ASyncDBConnection::Thread::waitForAndSendCommand()
 
 void ASyncDBConnection::Thread::doNewCommand()
 {
-	// todo: send command
 	// get command from top of queue (but leave it in the queue, we need the callback)
-	{
-		std::lock_guard<std::mutex> lg(m_commandQueue.m_mutex);
-		if (! m_commandQueue.m_queue.empty())	{
-			const Command &command = m_commandQueue.m_queue.front();
-			if (!command.command.empty()) {
-				bool query_send = false;
-				if (command.params.empty())
-					query_send = m_connection.sendQuery(command.command.c_str());
-				else
-					query_send = m_connection.sendQueryParams(command.command.c_str(), command.params);
+    if (! m_commandQueue.m_queue.empty())	{
+        const Command &command = m_commandQueue.m_queue.front();
+        if (!command.command.empty()) {
+            bool query_send = false;
+            if (command.params.empty())
+                query_send = m_connection.sendQuery(command.command.c_str());
+            else
+                query_send = m_connection.sendQueryParams(command.command.c_str(), command.params);
 
-				if (query_send) {
-					m_timer.start();
-					doStateCallback(State::QuerySend);
-				}
-				else {
-					std::string error = m_connection.getErrorMessage();
-					// todo: need to report the error
-				}
-			}
-		}
-	}
+            if (query_send) {
+                m_timer.start();
+                doStateCallback(State::QuerySend);
+            }
+            else {
+                std::string error = m_connection.getErrorMessage();
+                // todo: need to report the error
+            }
+        }
+    }
 
 }
 
@@ -336,7 +337,7 @@ void ASyncDBConnection::Thread::waitForResult()
         timeout.tv_sec = 5;
         timeout.tv_usec = 0;
     
-        int select_result = select(1, &readfds, nullptr, nullptr, &timeout);
+        int select_result = select(sock + 1, &readfds, nullptr, nullptr, &timeout);
         if (select_result > 0) {
             if (FD_ISSET(sock, &readfds)) {
                 if (consumeResultInput()) {

pglab/ConnectionManagerWindow.ui

@@ -201,12 +201,12 @@
      <x>0</x>
      <y>0</y>
      <width>800</width>
-     <height>23</height>
+     <height>24</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
     <property name="title">
-     <string>File</string>
+     <string>Fi&amp;le</string>
     </property>
     <addaction name="actionQuit_application"/>
    </widget>
@@ -240,7 +240,7 @@
   <action name="actionAdd_Connection">
    <property name="icon">
     <iconset resource="resources.qrc">
-     <normaloff>:/icons/server_add.png</normaloff>:/icons/server_add.png</iconset>
+     <normaloff>:/icons/add_connection.png</normaloff>:/icons/add_connection.png</iconset>
    </property>
    <property name="text">
     <string>Add Connection</string>
@@ -248,9 +248,9 @@
   </action>
   <action name="actionDelete_connection">
    <property name="icon">
-    <iconset>
-     <normalon>:/icons/server_delete.png</normalon>
-    </iconset>
+    <iconset resource="resources.qrc">
+     <normaloff>:/icons/delete_connection.png</normaloff>
+     <normalon>:/icons/delete_connection.png</normalon>:/icons/delete_connection.png</iconset>
    </property>
    <property name="text">
     <string>Delete connection</string>
@@ -261,8 +261,9 @@
   </action>
   <action name="actionConnect">
    <property name="icon">
-    <iconset resource="resources.qrc">
-     <normaloff>:/icons/server_go.png</normaloff>:/icons/server_go.png</iconset>
+    <iconset>
+     <normalon>:/icons/open_query_window.png</normalon>
+    </iconset>
    </property>
    <property name="text">
     <string>Connect</string>
@@ -270,14 +271,14 @@
   </action>
   <action name="actionQuit_application">
    <property name="text">
-    <string>Quit application</string>
+    <string>&amp;Quit application</string>
    </property>
   </action>
   <action name="actionBackup_database">
    <property name="icon">
-    <iconset>
-     <normalon>:/icons/backups.png</normalon>
-    </iconset>
+    <iconset resource="resources.qrc">
+     <normaloff>:/icons/backup_database.png</normaloff>
+     <normalon>:/icons/backups.png</normalon>:/icons/backup_database.png</iconset>
    </property>
    <property name="text">
     <string>Backup database</string>
@@ -286,7 +287,7 @@
   <action name="actionManage_server">
    <property name="icon">
     <iconset>
-     <normalon>:/icons/server_edit.png</normalon>
+     <normalon>:/icons/manage_server.png</normalon>
     </iconset>
    </property>
    <property name="text">

pglab/MainWindow.cpp

@@ -131,6 +131,9 @@ void MainWindow::on_actionAbout_triggered()
 			  "\n"
 			  "Icons by fatcow http://www.fatcow.com/free-icons provided under Creative Commons "
 			  "attribution 3.0 license\n"
+              "\n"
+              "More icons by https://icons8.com/ under Creative Commons Attribution-NoDerivs 3.0 Unported "
+              "license."
 			  ));
 
 }

pglab/MainWindow.ui

@@ -45,12 +45,12 @@
      <x>0</x>
      <y>0</y>
      <width>993</width>
-     <height>22</height>
+     <height>24</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuTest">
     <property name="title">
-     <string>File</string>
+     <string>Fi&amp;le</string>
     </property>
     <addaction name="actionNew_SQL"/>
     <addaction name="actionLoad_SQL"/>
@@ -69,7 +69,7 @@
    </widget>
    <widget class="QMenu" name="menuQuery">
     <property name="title">
-     <string>Query</string>
+     <string>&amp;Query</string>
     </property>
     <addaction name="actionExecute_SQL"/>
     <addaction name="actionExplain"/>
@@ -79,7 +79,7 @@
    </widget>
    <widget class="QMenu" name="menuView">
     <property name="title">
-     <string>Window</string>
+     <string>Wi&amp;ndow</string>
     </property>
     <addaction name="actionShow_connection_manager"/>
    </widget>
@@ -126,7 +126,7 @@
      <normaloff>:/icons/folder.png</normaloff>:/icons/folder.png</iconset>
    </property>
    <property name="text">
-    <string>Load SQL</string>
+    <string>&amp;Load SQL</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+O</string>
@@ -138,7 +138,7 @@
      <normaloff>:/icons/script_save.png</normaloff>:/icons/script_save.png</iconset>
    </property>
    <property name="text">
-    <string>Save SQL</string>
+    <string>&amp;Save SQL</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+S</string>
@@ -150,7 +150,7 @@
      <normaloff>:/icons/table_save.png</normaloff>:/icons/table_save.png</iconset>
    </property>
    <property name="text">
-    <string>Export data</string>
+    <string>&amp;Export data</string>
    </property>
   </action>
   <action name="actionClose">
@@ -160,7 +160,7 @@
     </iconset>
    </property>
    <property name="text">
-    <string>Close</string>
+    <string>&amp;Close</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+F4</string>
@@ -168,12 +168,12 @@
   </action>
   <action name="actionAbout">
    <property name="icon">
-    <iconset>
-     <normalon>:/icons/information.png</normalon>
-    </iconset>
+    <iconset resource="resources.qrc">
+     <normaloff>:/icons/about.png</normaloff>
+     <normalon>:/icons/information.png</normalon>:/icons/about.png</iconset>
    </property>
    <property name="text">
-    <string>About</string>
+    <string>&amp;About</string>
    </property>
   </action>
   <action name="actionExecute_SQL">
@@ -183,7 +183,7 @@
     </iconset>
    </property>
    <property name="text">
-    <string>Execute queries</string>
+    <string>&amp;Execute queries</string>
    </property>
    <property name="toolTip">
     <string>Execute the (selected) queries</string>
@@ -199,7 +199,7 @@
     </iconset>
    </property>
    <property name="text">
-    <string>Cancel</string>
+    <string>&amp;Cancel</string>
    </property>
    <property name="shortcut">
     <string>Alt+Pause</string>
@@ -211,7 +211,7 @@
      <normaloff>:/icons/lightbulb.png</normaloff>:/icons/lightbulb.png</iconset>
    </property>
    <property name="text">
-    <string>Explain Analyze</string>
+    <string>Ex&amp;plain Analyze</string>
    </property>
    <property name="shortcut">
     <string>Shift+F7</string>
@@ -219,22 +219,22 @@
   </action>
   <action name="actionSave_SQL_as">
    <property name="text">
-    <string>Save SQL as</string>
+    <string>Sa&amp;ve SQL as</string>
    </property>
   </action>
   <action name="actionSave_copy_of_SQL_as">
    <property name="text">
-    <string>Save copy of SQL as</string>
+    <string>Save copy &amp;of SQL as</string>
    </property>
   </action>
   <action name="actionNew_SQL">
    <property name="icon">
-    <iconset>
-     <normalon>:/icons/page_white_add.png</normalon>
-    </iconset>
+    <iconset resource="resources.qrc">
+     <normaloff>:/icons/new_query_tab.png</normaloff>
+     <normalon>:/icons/page_white_add.png</normalon>:/icons/new_query_tab.png</iconset>
    </property>
    <property name="text">
-    <string>New SQL</string>
+    <string>&amp;New SQL</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+N</string>
@@ -247,7 +247,7 @@
     </iconset>
    </property>
    <property name="text">
-    <string>Explain</string>
+    <string>E&amp;xplain</string>
    </property>
    <property name="toolTip">
     <string>Explain the (selected) query</string>
@@ -258,7 +258,7 @@
   </action>
   <action name="actionShow_connection_manager">
    <property name="text">
-    <string>Show connection manager</string>
+    <string>&amp;Show connection manager</string>
    </property>
   </action>
   <action name="actionCopy">
@@ -268,7 +268,7 @@
     </iconset>
    </property>
    <property name="text">
-    <string>Copy</string>
+    <string>&amp;Copy</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+C</string>
@@ -281,7 +281,7 @@
     </iconset>
    </property>
    <property name="text">
-    <string>Copy as C-string</string>
+    <string>Copy as C-&amp;string</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+Alt+C</string>

pglab/resources.qrc

@@ -1,6 +1,5 @@
 <RCC>
     <qresource prefix="/">
-        <file>icons/server_add.png</file>
         <file>icons/server_delete.png</file>
         <file>icons/server_go.png</file>
         <file>icons/script_delete.png</file>
@@ -12,13 +11,18 @@
         <file>icons/page_white_add.png</file>
         <file>icons/page_white_delete.png</file>
         <file>icons/lightbulb_off.png</file>
-        <file>icons/information.png</file>
         <file>icons/16x16/document_green.png</file>
         <file>icons/16x16/document_red.png</file>
         <file>icons/16x16/document_yellow.png</file>
-        <file>icons/backups.png</file>
         <file>icons/page_white_copy.png</file>
         <file>icons/token_shortland_character.png</file>
         <file>icons/server_edit.png</file>
+        <file>icons/new_query_tab.png</file>
+        <file>icons/about.png</file>
+        <file>icons/backup_database.png</file>
+        <file>icons/add_connection.png</file>
+        <file>icons/delete_connection.png</file>
+        <file>icons/open_query_window.png</file>
+        <file>icons/manage_server.png</file>
     </qresource>
 </RCC>

pglab/tsqueue.h

@@ -15,7 +15,7 @@ public:
 	bool empty();
 	t_Callable pop();
 
-	//HANDLE getNewDataEventHandle();
+	//HANDLE getNewDataEventHandle(); Looks like this wasn't use at all so we can leave the event out.
 private:
 	using t_CallableQueue = std::deque<t_Callable>;