Home » Community » Newbie corner » overwritten virtual void LeftDown - how to invoke WhenAction?
| overwritten virtual void LeftDown - how to invoke WhenAction? [message #36706] |
Wed, 27 June 2012 20:20  |
Wolfgang
Messages: 146
Registered: November 2011
Location: Germany
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Experienced Member |
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Hi, I've created a class based on Button:
class PaintArea : public Button {
in this I overwrite LeftDown Action:
virtual void LeftDown(Point pos, dword flags) {
and now I'm asking how to call, when set, the WhenAction of the Button?
.h
.cpp
myPaintArea.WhenAction = THISBACK(anotherMethod);
with this code and the virtual void LeftDown the "anotherMethod" method isn't called - what to change in the virtual void LeftDown(..) method to call this method?
Thanks for help!
EDIT: Is it that easy, just call
at the bottom of the LeftDown method?
[Updated on: Wed, 27 June 2012 20:25] Report message to a moderator |
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| Re: overwritten virtual void LeftDown - how to invoke WhenAction? [message #36707 is a reply to message #36706] |
Wed, 27 June 2012 20:52  |
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Hi Wolfgang
| Wolfgang wrote on Wed, 27 June 2012 20:20 |
EDIT: Is it that easy, just call
at the bottom of the LeftDown method?
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Yes, it is that easy with U++  You don't even have to write the "this->". WhenAction is just a Callback - a stored reference to function. You can call it just like the original function. In case no function has been assigned to the callback, it will simply do nothing.
Best regards,
Honza
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