This property specifies whether the user should be warned that changes have been made, for example, when the user tries to close the form.
It is set to TRUE$ by the system when changes are made to data in data-bound controls. It is reset by the system to FALSE$ after the READ, WRITE, and CLEAR events.
This is a Boolean property.
| Index Value | This should be the name of the control that triggered the SAVEWARN update. |
| Development | Runtime | Indexed | Scaled | Synthetic |
|---|---|---|---|---|
| N/A | Get/Set | Yes | No | Yes |
For a data-bound window the system generally checks to see if it should be set at the following points: When a control loses focus, when the current cell is changed in an edit table, and when a window is about to be closed (the control with focus is checked).
The system presents two ways of tracking when SAVEWARN is set by the system:
• By intercepting the WINDOW SYSMSG event and examining the SAVEWARNINFO message
• By using the SAVEWARN method in the SetDebugger stored procedure to see SAVEWARN changes in the System Monitor.
//// Example - set the SAVEWARN flag and triggering control// ModifiedCtrlID = @Window : ".EDL_FORENAME" Call Set_Property_Only( @Window, "SAVEWARN", TRUE$, ModifiedCtrlID )
SYSTEM FOCUS property, Common GUI FOCUS property, EDITLINE/EDITBOX MODIFIED property, Common GUI LOSTFOCUS event, EDITTABLE POSCHANGED event, WINDOW CLOSE event, WINDOW SYSMSG event, SetDebugger stored procedure.