Question

Detecting if the Escape key has been pressed during a function

Asked by: AndrewDBrown

I have a function within my 2003 database that creates several reports.  After each report has been created, I would like to see if the Escape key has been pressed.  If it has I would like to stop the function.

Any suggestions?

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Asked On
2009-11-04 at 01:09:25ID24870155
Topic

Microsoft Access Database

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: jjafferrPosted on 2009-11-04 at 02:23:39ID: 25737902

try this code

Keycode 27 is the Escape key

jaffer

Private Sub KeyHandler_KeyDown(KeyCode As Integer, _
     Shift As Integer)
if keycode=27 then
cancel=true
msgbox "you pressed the Escap key"
endif
End Sub

                                              
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by: harfangPosted on 2009-11-04 at 03:56:48ID: 25738401

jaffer's code is part of the solution. Supposing that a form is active during your function execution, the form can "listen" to keystrokes, especially if the form uses "keyboard preview" (so it doesn't matter which control has the focus).

The escape key can then toggle a global variable, "cancel requested". A [Cancel] button can also perform the same thing.

Your function would then perform as often as possible the sequence: DoEvents (to process any pending keystrokes) and "If gfCancelRequest Then... exit".

(°v°)

 

by: AndrewDBrownPosted on 2009-11-04 at 05:10:02ID: 31649880

Thanks guys that's really useful.

20120131-EE-VQP-002

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