How to access afx protected method in another file of class in mfc dialog based

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I have done a GUI with main dialog box with one button. if I press that button I will get modeless another dialog box with one button and edit box. My aim is if I press main dialog box button the button should access the another dialog box button .

Generally Button function is in protected mode by default, how to access protected afx button function in main dialog box button function.

What I have tried:

I created object of another dialog box in public mode in main dialog box. Thru that object I tired to access another dialog box protected function.

Posted 10-Nov-17 0:19am

Member 12208944

Updated 10-Nov-17 0:51am

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2 solutions

Solution 1

Make an accessor (a public method) in order to manipulate the protected property.

Posted 10-Nov-17 0:30am

CPallini

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Jochen Arndt · Accepted Answer · 2017-11-10T00:51:00

So you have a main dialog which creates another (modeless) dialog upon a button press (or hopefully activates the modeless dialog if it exists already).

In such cases your main dialog usually contains a member for the second dialog. You can use that member to access the other dialog and it's public members. For access to protected members you can add functions that allow general access (return a pointer to the member) or functions that perform specific actions.

If you refer to a message handler by "afx button function", just send the corresponding message to the window. If you want for example to simulate a button click in the modeless dialog all you need is the CWnd of that dialog and the ID of the button:

C++

m_pModelessDialog->SendMessage(
    WM_COMMAND,
    MAKEWPARAM(ID_OF_BUTTON, BN_CLICKED),
    // May also pass NULL here (works in most cases)
    m_pModelessDialog->GetDlgItem(ID_OF_BUTTON)->GetSafeHwnd()
);