Minors for linux compatibility;

Updated readme

README.md

@@ -1,9 +1,32 @@
 # Qt SQL Example
 
-An exemplary Qt app that connects to SQL server and displays a table from a database. The program was made for educational purposes.
+An exemplary [Qt](https://www.qt.io/) app that connects to SQL server and displays a table from a database. The program was made for educational purposes.
 
 ![](screenshot.png)
 
 The program was tested on: 
- * client: Windows 10, Qt 5.9.1, 
+ * clients: Windows 10 with Qt 5.9.1, Ubuntu 16.04 with Qt 5.5.1, 
  * servers: MySQL Server 5.5.57, Microsoft SQL Server 2008 R2 SP3.
+
+## Client config
+
+The program reads `config.ini` on startup. The file must be located in the app working directory.
+
+## SQL database drivers
+
+A comprehensive discussion about SQL database drivers can be found in [Qt Documentation](https://doc.qt.io/qt-5/sql-driver.html).
+
+### Windows 10
+
+* Both Qt driver plugins should be already bundled with Qt SDK.
+* System ODBC driver should be already bundled with Windows.
+* System MySQL driver can be *installed* by placing `libmysql.dll` from [C API for MySQL (mysqlclient)](https://dev.mysql.com/downloads/connector/c/) in the app working directory.
+
+### Ubuntu 16.04
+
+Packages with Qt driver plugins and system SQL manager with drivers:
+
+* MySQL - `libqt5sql5-mysql` `libmysqlclient20`,
+* MSSQL/ODBC - `libqt5sql5-odbc` `libodbc1` `odbcinst` `unixodbc` `msodbcsql`__*__.
+
+__*__ How to install `msodbcsql` - [Installing the Microsoft ODBC Driver for SQL Server on Linux and macOS](https://docs.microsoft.com/en-us/sql/connect/odbc/linux-mac/installing-the-microsoft-odbc-driver-for-sql-server).

qt-sql-example.pro

@@ -1,4 +1,4 @@
-VERSION = 1.0
+VERSION = 1.1
 QMAKE_TARGET_DESCRIPTION = "Qt app that displays SQL table; for educational purposes"
 QMAKE_TARGET_COPYRIGHT   = "Andrzej Wojtowicz, Adam Mickiewicz University in Poznan"
 QMAKE_TARGET_PRODUCT     = "Qt SQL Example"

src/mainwindow.cpp

@@ -63,7 +63,7 @@ MainWindow::MainWindow(QWidget* parent, DbController* dbc, QThread* dbt) :
     QFileInfo check_file(inifile);
     if (check_file.exists() && check_file.isFile())
     {
-        QSettings settings(inifile, QSettings::Format::IniFormat);
+        QSettings settings(inifile, QSettings::IniFormat);
 
         QString engine = settings.value("sql/engine", "").toString();
         if (engine == "mysql")

src/mainwindow.ui

@@ -87,7 +87,7 @@
           <rect>
            <x>73</x>
            <y>22</y>
-           <width>47</width>
+           <width>65</width>
            <height>13</height>
           </rect>
          </property>
@@ -100,7 +100,7 @@
           <rect>
            <x>163</x>
            <y>22</y>
-           <width>47</width>
+           <width>65</width>
            <height>13</height>
           </rect>
          </property>
@@ -172,7 +172,7 @@
            <rect>
             <x>10</x>
             <y>24</y>
-            <width>151</width>
+            <width>211</width>
             <height>17</height>
            </rect>
           </property>
@@ -194,7 +194,7 @@
            <rect>
             <x>10</x>
             <y>114</y>
-            <width>141</width>
+            <width>211</width>
             <height>17</height>
            </rect>
           </property>
@@ -235,7 +235,7 @@
            <rect>
             <x>30</x>
             <y>54</y>
-            <width>51</width>
+            <width>61</width>
             <height>16</height>
            </rect>
           </property>
@@ -256,13 +256,6 @@
            <string>password:</string>
           </property>
          </widget>
-         <zorder>lineEdit_login</zorder>
-         <zorder>radio_sql_authentication</zorder>
-         <zorder>radio_windows_authentication</zorder>
-         <zorder>lineEdit_password</zorder>
-         <zorder>label</zorder>
-         <zorder>label_2</zorder>
-         <zorder>groupBox_sql_drivers</zorder>
         </widget>
         <widget class="QPushButton" name="button_connect">
          <property name="geometry">
@@ -285,7 +278,7 @@
           <rect>
            <x>10</x>
            <y>115</y>
-           <width>41</width>
+           <width>81</width>
            <height>21</height>
           </rect>
          </property>
@@ -329,7 +322,7 @@
           </rect>
          </property>
          <property name="text">
-          <string>database name:</string>
+          <string>database:</string>
          </property>
         </widget>
         <widget class="QLabel" name="label_6">
@@ -337,7 +330,7 @@
           <rect>
            <x>10</x>
            <y>145</y>
-           <width>51</width>
+           <width>81</width>
            <height>20</height>
           </rect>
          </property>
@@ -369,7 +362,7 @@
           <rect>
            <x>10</x>
            <y>85</y>
-           <width>41</width>
+           <width>81</width>
            <height>21</height>
           </rect>
          </property>
@@ -387,7 +380,7 @@
           </rect>
          </property>
          <property name="toolTip">
-          <string>For ODBC/MSSQL: &quot;SQL Server&quot; (Windows), &quot;ODBC Driver 13 for SQL Server&quot;, &quot;FreeTDS&quot; (unix), etc.</string>
+          <string>For ODBC/MSSQL: &quot;SQL Server&quot; (Windows), &quot;ODBC Driver 13 for SQL Server&quot; (unix), etc.</string>
          </property>
          <property name="text">
           <string/>
@@ -517,6 +510,12 @@
        </item>
        <item row="0" column="0">
         <widget class="QLabel" name="label_5">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
          <property name="text">
           <string>table:</string>
          </property>