The sesLib home page.

Download  the sesLib version for Delphi 5.
Size is ~ 1 Mb zipped and ~3.5 Mb unzipped.
Update 04.04.2002.
The page Contents.

• 1. See screen shots:
  Screen shots
   

• 2. Brief.
  
  The sesLib is a "light" native VCL components package with Delphi 5 compatible
  help system.
  The sesLib consists of three components: TsesEdit, TsesLogger, TsesDataSet.
  The TsesEdit is the integral component , which incapsulates the   many basic properies and
  methods of the data editor line components: TEdit, TComboBox, TDBEdit, TDBComboBox, etc.
  In many cases, you may consider the TsesEdit as a replacement of these components.
  The TsesEdit is the direct descendant of the TCustomPanel, as a shell or container  for
  the child components: TCustomEdit, TSpeedButton as PickButton, TSpeedButton as PopupButton.
  The realized powerful properties, methods and events of the TsesEdit give a application developer
  the total control over all entered by user data.
  In combination with the TsesLogger you can easily create a editing group of the TsesEdits,
  using a group operations. So, you may check up by one function call the status of group editing: sesLogger1.Complete.
  The last function detemines whether or not the user completes the edition  with valid result.
  The TsesEdit supports the six level of data control:
  I. by if-Required-nonEmpty-level control;II. by low-level key pressing control;III. by data-format-level control;
  IV. by data-range-level control;V. by data-in-PickList-level control;VI. by data-User handler-level control.
  On the fifth(V) level you have a wide choice of tools, which allow you easily create the most
  suitable PickList kind either memory based or database oriented.
  The TsesLogger links TsesEdits into integrated group and provides logging functions. So, you
  may provide the user a possibility to see a history list of entered valid  data values or to pick up
  one of these values from the list.
  The TsesDataSet is a "light" variant of the direct descendant of the TDataSet without
  using BDE or ADO(uses DB unit only).
  There are two typical using of the TsesDataSet.
  The first, you may replace TStringGrid by the most powerful component DBGrid and it's descendants. Be free to design columns and titles, to fill data into grid in design-time with full possibility of saving your work by standard Delphi designer. Also, you can manipulate rows and columns as records and fields of usual dataset in run-time: append, insert, edit, etc. operations.
  The second, you may need to use TsesDataSet as pure memory dataset with ability to execute usual dataset operations with additional Seek and Sort.
  The TsesDataSet  provides the two grid-based property editors to create or modify   data structure and enter or
  modify data records at design time. Also, you may save to or restore from both data or/and structure to text file.

• 3. Installation.
  Note.You must have Borland Delphi 5 intalled on your computer.
  
  1. Download the sesLib.zip to your local drive, say, to drive "x:",
     directory x:\sesLib.
     Then unzip the sesLib.zip.
     As result, you get the all sesLib files in the x:\sesLib.
  2. Run Delphi 5.
  3. Open by File/Open the x:\sesLib\sesLib.dpk.
  4. Click on Install button and follow the next Delphi instructions.
      You should answer "Yes" all questions...
  5. Check up Tool/Environment Options/Library path to be sure,
  that the x:\sesLib path is included in the Delphi lib list.
  If it is not present, add it.
  
  If you want to incorporate the sesLib help to the Delphi help system,
  use Delphi OpenHelp utility by Help/Customize... and add :
  1.x:\sesLib\Help\sesLib.cnt to the Content and Project pages;
  2.x:\sesLib\Help\sesLib.hlp to the Index and Link pages.
  Then don't forget to save a new project.

• 4. Description.
  Safe Editing Style(SES) Library(Lib) introduces a possible data editing style, which may provide you and the your users a safe as possible tool to edit a data linked with any kind of Data storage, such as memory lists and arrays, databases or, at last, Internet resources.
  See the sesLib.hlp for more details.

  The sesLib technology consists of the two things:
  the first, native Delphi VCL components: TsesEdit, TsesLogger, TsesDataSet;
  the second, the used method of the data processing.
  The SES basic principles include the following postulates.
  Postulate 1. Any component contains a minimum one mistake.
  Effect 1. The less number of components you use, the better your programs work.
  Effect 2. The program written by you without using any components will contain only your own mistakes.
  Effect 3. Don't use a component without its source code, because you will not have the possibility to enter your own mistakes into its work.
  Effect 4. The sesLib consists of only one editor component TsesEdit with full source code. See Effect 3.

  Postulate 2. The true programmer should never rely on the Database input control, instead, this one must believe, that all entered by his users errors will be stored to the SQL server database without any exceptions or warnings or, instead, with its tremendous amount.
  Effect 1. The better the Database designer knows the theory of the relational algedraic operations, the more is probability for the user to get a message, for example, "Unknown field of the unknown table is not corresponded the foreign key of something...".
  Effect 2. Never desert your user alone with the carefully thought-out SQL server messages, because the not entered user's data may become necessary. May be soon...
  Effect 3. You should try to make the maximum amount of data control, as possible, on the user's desktop before any writing to a database.
  Effect 4. The TsesEdit introduces the full tool set to produce the all kind of data control.

  Postulate 3. The less is the time gap, while your code really modifies the Database, the more is the probability to have the valid Database data.

  The effect is described by the following data flow diagram. See also demo BDE_sesEdit_Sample to more details

  

   

  Conclusions.
  The first, the data flow has the only one fraught with danger interval during the really update process within a single dataset's record.
  The second, the main center of the data editing actions is placed on the TsesLogger TsesEdits group, where we must provide the highest possible efforts to prevent the entering of invalid data to the external database.To learn more the sesLib capabilities and practical examples see the attached samples.
  
  TsesEdit.
  
  Description.
  TsesEdit is a native VCL component with Delphi compatible help system.
  TsesEdit is designed to extend the abilities of the standard like TEdit controls.

  Use TsesEdit as a base control to create " professional-level" applications.
  The key features of the TsesEdit are listed below:

  • encapsulates together Caption,Editor, Pick button in the integral component;
  • allows to align a TsesEdit in an any TWinControl container client area;
  • provides the full control over what does a user enter:

  I. by if-Required-nonEmpty-level control;

  II. by low-level key pressing control;

  III. by data-format-level control;

  IV. by data-range-level control;

  V. by data-in-PickList-level control;

  VI. by data-User handler-level control.

  • provides the most possible power to create and process a Pick list:

  A. The memory-oriented types, such as Standard(one key field), CodeCaption(one key field plus field's description for a user); Grid(one key field with some descripting fields).

  B. The database-oriented type DataSet.

  • introduces the powerful tools to provide a user the context help information, such as error processing dialogs, pick up list dialog, history pick up dialog, etc., including sound WAV files based messages;
  • supports both "numeric keypad oriented" and "mouse-PickUp oriented" conception of data input;
  • allows to create or select a number of sesEdits as a group of controls and use group operations;
  • supports the powerful tool to log data to and retrieve data from external ini file, so, your user can pick up a historical value from a history list.

  TsesLogger.
  
  Description.
  TsesLogger has been designed for two main goals:
  1. introduce a tool to create group edits, which are linked together to centralize source program code managing the all edit operations.
  2. restore in edit practice the good idea to log changes to external file with ability to retrieve these values and to introduce these ones for user.

  TsesLogger works tightly with TsesEdit.
  In design-time you should link all grouped TsesEdit with a sesLogger, sets the edits corresponding properties, that is all!
  You will get the ability to log your data and, then shows they your user.

  TsesDataSet.
  
  TsesDataSet introduces external file/memory text strings manager.
  It is a native descendant of TDataSet and may be used with all data-aware controls, which are able to link with TDataSource.
  TsesDataSet does not require BDE or ADO using.
  There are two typical using of a TsesDataSet.
  The first, you may replace TStringGrid by the most powerful component DBGrid and it's descendants. Be free to design columns and titles, to fill data into grid in design-time with full possibility of saving your work by standard Delphi designer. Also, you can manipulate rows and columns as records and fields of usual dataset in run-time: append, insert, edit, etc. operations.
  The second, you may need to use TsesDataSet as pure memory dataset with ability to execute usual dataset operations with additional Seek and Sort.

• 5. About...