Trigger ON_BN_CLICKED event at runtime in MFC VC++ 6.0

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How to trigger ON_BN_CLICKED event at runtime?

For example, I want to trigger the click event of a Button in my first Dialog when I click a Button of my second Dialog.

I am using Microsoft Visual C++ 6.0 MFC.

Thanks in advance.

Posted 9-Feb-12 21:56pm

agent_suwastica

Updated 8-Apr-21 5:40am

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Lakamraju Raghuram · Answer 1 · 2012-02-09T22:23:00

Solution 1

I assume that you have set up for handling the button event in the second dialog.

In this event all you have to do is to send the message to the button in the first page. This can be done by:

C++

SendMessage(WM_COMMAND,
             MAKEWPARAM(IDC_MY_FIRST_BUTTON, BN_CLICKED),
            (LPARAM) m_MyFirstButton.m_hWnd);

Posted 9-Feb-12 22:23pm

Lakamraju Raghuram

Comments

agent_suwastica 10-Feb-12 5:14am

Thanks for your reply :)
I apply your answer but it calls the click event of second button, an infinite loop is a result.
My Second Dialog is a modal dialog, is it affected or the handle of first button is not accessible?

serg06 · Answer 2 · 2021-04-08T05:40:00

Solution 2

Or for a more modern solution:

C++

CWnd* btn = &m_btn;
btn->SendMessage(
    WM_COMMAND,
    MAKEWPARAM(
        btn->GetDlgCtrlID(),
        BN_CLICKED),
    (LPARAM)btn->GetSafeHwnd()
);

Posted 8-Apr-21 5:40am

serg06

Updated 8-Apr-21 5:41am

v2

Comments

Richard Deeming 9-Apr-21 4:48am

A "more modern solution" to a question asked nine years go about VC++ 6.0?