dlgEvent_Before_SearchDialog

Function called before user searches a dialog at the form level.

Syntax

PUBLIC FUNCTION dlgEvent_Before_SearchDialog( 
   dlg ui.DIALOG, 
   uiMode SMALLINT,
   dlgCtrlInstruction libdbappEvents.DlgCtrlInstruction_Type)
RETURNS (libdbappEvents.DlgCtrlInstruction_Type)
The function parameters are:
  1. dlg. This is a ui.DIALOG object referencing the current dialog. The dialog can implement an INPUT, INPUT ARRAY, DISPLAY ARRAY, MENU, or CONSTRUCT. For more information, see The Dialog class in Genero Business Development Language User Guide.
  2. uiMode. This is an integer value defining the current mode or state in relation to user action in the dialog, form, or application. Modes are defined as constants in the libdbappFormUI file in the libdbapp library.
    Table 1. UI modes
    Description Applies to ... Constant Value
    Display DISPLAY ARRAY C_MODE_DISPLAY 1
    Modify INPUT \ INPUT ARRAY C_MODE_MODIFY 2
    Add INPUT \ INPUT ARRAY C_MODE_ADD 3
    Search CONSTRUCT C_MODE_SEARCH 4
    Empty MENU C_MODE_EMPTY 5
    Exit form The form C_MODE_EXIT_FORM 6
    Exit app The app C_MODE_EXIT_APP 7
    Undefined All (array, form, or app) C_MODE_UNDEFINED 0
  3. dlgCtrlInstruction is a libdbappEvents.DlgCtrlInstruction_Type defining the DIALOG control instruction. Instructions available in the function are shown in the table.
    Table 2. Dialog control instructions
    Description Constant Value
    Accept dialog ACCEPT_DIALOG 1
    Continue dialog CONTINUE_DIALOG 2
    Exit dialog EXIT_DIALOG 3
    Exit menu EXIT_MENU 4
Returns a dialog instruction value defined by the libdbappEvents.DlgCtrlInstruction_Type type.

Usage

When you select the Before Search Dialog property for the creation of the event, a function shell is created. Enter your code in the function.

This function is called before the user gets control of the dialog (CONSTRUCT) to enter search criteria. Use this event, for example, to enable/disable actions and fields, and to give the focus to a specific field.

Example: Before Search Dialog

This example uses the Before Search Dialog code event for the Account form in the OfficeStore demo.

The function sets the focus on the email field. 

PUBLIC FUNCTION dlgEvent_Before_SearchDialog(dlg ui.DIALOG, uiMode SMALLINT,
      dlgCtrlInstruction libdbappEvents.DlgCtrlInstruction_Type)
    RETURNS (libdbappEvents.DlgCtrlInstruction_Type)

    DISPLAY "dlgEvent_Before_SearchDialog (Form scope) is raised"
    CALL dlg.nextField("account.email")
    DISPLAY "dlgEvent_Before_SearchDialog (Form scope) is exited"

    RETURN dlgCtrlInstruction
END FUNCTION