private void InitializeComponents()
{
Quit_MenuItem.Activated += QuitMenuItem_OnActivated;
SaveChanges_MenuItem.Activated += SaveChangesMenuItem_OnActivated;
ConnectDB_MenuItem.Activated += ConnectDBMenuItem_OnActivated;
DisconnectDB_MenuItem.Activated += DisconnectDBMenuItem_OnActivated;
Execute_Button.Clicked += ExecuteButton_OnClicked;
var cellText = new CellRendererText();
Queries_ComboBoxText.PackStart(cellText, false);
Queries_ComboBoxText.AddAttribute(cellText, "text", 0);
}