Calling user defined event handler for owner draw control

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Hi All

This may be a stupid question and the result of over-indulgence throughout the holiday period. Anyway here goes : I have created an owner draw button (CButtonEx) and one of the many features added is the ability to have a timeout period which when depleted causes the user-defined OnClick function to execute. I can put an onclick handler in the CButtonEx source file and can call that from within the CButtonEx class, I can also put an on click handler in the Dialog class where the button is placed. And can call the CButtonEx OnClick from the Dialog OnClick.

How do you call down the tree?? i.e. from the CbuttonEx to the CDialog class where the user code is??? I am sure this should be simple was thinking that you could post a message but I think that it sould be easier than that.

Any help greatly appreciated.

Andy

Posted 4-Jan-10 5:31am

Andy Melville

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3 solutions

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Alain Rist · Accepted Answer · 2010-01-05T12:16:00

Solution 3

In your CButtonEx OnTimer() handler:
::PostMessage(GetParent()->m_hWnd, WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM)m_hWnd);

cheers,
AR

Posted 5-Jan-10 12:16pm

Alain Rist

Updated 6-Jan-10 4:58am

v2

Christian Graus · Accepted Answer · 2010-01-04T09:12:00

Solution 1

This is trivial in .NET, but I believe in C++ you need to use a function pointer to define a method in one class and then have it call a method in another. Or you could use messages, that may be simpler.

Posted 4-Jan-10 9:12am

Christian Graus

CPallini · Accepted Answer · 2010-01-04T09:54:00

Solution 2

I would mimic the MFC behaviour, i.e. post a message.
:)

Posted 4-Jan-10 9:54am

CPallini

v2