can't detect ESC key, MFC

[gorgor]

I can't seem to be able to detect the escape key. I have an MFC app. I over-rode just about every key press message handler in my class object that has the input focus and none of the handlers can detect the ESC key. I can detect most other keys with the handlers I've tried. Any ideas?

 

[chrisdl]

Have you used PreTranslateMessage? If that does not work you can use a timer and call GetAsyncKeyState.


-Chris (Consultant / Software Engineer)

 

[gorgor]

I tried pretranslate message, but during debug, I noticed that the pretranslate message function doesn't even get called.

I'll give GetAsyncKeyState a try although I try to avoid timers as much as possible.

 

[Bones3]

The escape key is Ascii code 27. the ON_WM_CHAR() (OnChar) will detect it's input. In the OnChar member function put something like:

if ((char)nChar == (char)(27))
{
escape program.
}

-Bones

 

[dlldelhi]

yeah I too used in Win32 dialog box as (on SDK)
....
case WM_KEYDOWN:
if (char(wParam)==27)
EndDialog(hDlg, 0);
break;

 

[gorgor]

None of the above has worked. The OnChar() handler isn't being called when I press the ESC key. I've tried just about every handler including PreTranslateMessage() and nothing catches the ESC key. I'd hate to use GetAsyncKeyState() if I don't have to. Any ideas? Thanks again.

 

[JagadeeshVN]

What type of application are you using. Is it dialog based / views ?

Also, Just check out whether you have assigned ESC key for accelerators ?