dlgEvent_OnActionCancel

Function called to overwrite a predefined action to cancel the current interactive instruction.

Syntax

PUBLIC FUNCTION dlgEvent_OnActionCancel( 
   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 On Action Cancel property for the creation of the event, a function shell is created. Enter your code in the function.

Use this function to overwrite a predefined action to cancel the current interactive instruction.

Example: On Action Cancel

This example uses the On Action Cancel code event for a form in the OfficeStore demo.

In this example, the function displays the state of uiMode. 

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

    DISPLAY "dlgEvent_OnActionCancel (Form scope) is raised"
    DISPLAY "uiMode ", uiMode
    RETURN dlgCtrlInstruction
END FUNCTION