Creation of procedures of studying the event

For providing of functionality of the program procedures of studying the events are created. For example, in the NeoLog program, the first menu Dictionary item is intended for the setting of information, its editing and revision.

Its call provides the correct reflection of all components, that give necessary information, and also the components, that manage the processes.

The text of the proper procedure looks like this way:

procedure TForm1.N1Click(Sender: TObject);

begin

Panel1.Visible:=False;

Panel3.Visible:=False;

dbEdit1.Visible:=True;

dbLookupComboBox3.Visible:=True;

dbLookupComboBox1.Visible:=True;

dbLookupComboBox2.Visible:=True;

dbMemo1.Visible:=True;

dbMemo2.Visible:=True;

dbNavigator1.Visible:=True;

Label1.Visible:=True;

Label2.Visible:=True;

Label3.Visible:=True;

Label4.Visible:=True;

Label5.Visible:=True;

Label6.Visible:=True;

StatusBar1.Visible:=True;

StatusBar1.Panels.Items[0].Text:='#'+IntToStr(Table1.RecNo);

StatusBar1.Panels.Items[1].Text:='All in all: ' +IntToStr(Table1.RecordCount);

end;

In this procedure the meaning of the property Visible objects are set, and functions of determination of the amount of records are also used in the table of database and current number of record.

For the creation of template of procedure it is enough to click in the menu Dictionary in the Delphi environment and the following code will appear:

procedure TForm1.N1Click(Sender: TObject);

begin

end;

Between begin and end; it is necessary to write down needed commands which answer the Object Pscal programming language, which is a host language for Delphi.

Organization of multiwindows projects

Using the property of the Visible objects it is possible to create the dynamic picture of software environment on one form. But Delphi allows to create applications, the work of which is organized in different windows. Such projects contain several forms. Thus there is the method of the use of equal windows and unequal ones, that is one of the windows is main and the others are daughter's. Different multiwindow methods are used in the NeoLog program. For example, for organization of the work of the menu: Dictionary, Search, DSL one form is used, and a dynamics is achieved by manipulation of the Visible property. Other options of the menu form windows in other forms. Thus, as the menu Parameters, has the critical value for studying data, the work in the main window is blocked up to the completion of the work with the inferior window.

Installation of the program

For correct work of the application in the Windows environment, the exact concordance between the components of the addition and operating system is necessary especially at the use of databases. Therefore the simple copying of programmatic files from one computer on the other does not give the desired result, and sometimes additions do not work at all. For the decision of this problem special program is created which also enters the system of the Delphi visual programming and has the InstallShield name. The simplest way is to create an installation package with the help of the master which is started in the InstallShield environment. It step by step leads the user to the complete formation of installation files. Transference of the program on the other computer is carried out by the start of the programmatic file Setup with subsequent implementation of requirements of installator. Mostly the program is set in the Program Files folder of the system disk.