Kbase P176278: Application terminates when pressing Esc in a .NET dialog
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
10/28/2010 |
|
Status: Unverified
SYMPTOM(s):
Application terminates when pressing Esc in a .NET dialog
Application terminates when pressing Esc in an ABL .NET form
Code subscribes to the KeyDown event on the form
ESCAPE is trapped and APPLY to the focused widget on an ABL window
Application is blocked in ShowDialog with a .NET WAIT-FOR when ESCAPE is trapped and applied
FACT(s) (Environment):
OpenEdge Category: Language (4GL/ABL)
OpenEdge 10.2A
OpenEdge 10.2B
Windows
CAUSE:
Bug# OE00201225
CAUSE:
When applying the ESCAPE key, the AVM treats it as ENDKEY and at the end of the trigger executing (in this case, the event handler for the KeyDown event), AVM will handle the ENDKEY and cause the .NET application to exit as part of the ENDKEY processing, causing the whole application to close.
FIX:
Option #1
ESCAPE key could be handled in a manner similar to the following:
DEF VAR Current-form AS Progress.Windows.Form NO-UNDO .
Current-form = CAST (active-form, "Progress.Windows.Form").
/* if only want to handle dialogs, could do this */
IF Current-form:modal THEN
Current-form:DialogResult = System.Windows.Forms.DialogResult:Cancel.
/* or simply close the form */
Option #2
Use an ON END-ERROR trigger and ensure that it contains RETURN NO-APPLY.