Run function after dialog is shown

Question

I am using a MFC wizard with CPropertyPages. Is there any way of calling a function after the page is shown? At the moment the function starts when I hit the "Next"-button of the previous page.

I tried to call the function from OnShowWindow, OnCreate, OnSetActive, DoModal, but none of them worked.

Thanks for your help!

Answer 1

Usually it's enough to override OnSetActive(). However, this method is called before the CPropertyPage is made visible and focused. If you have to perform a task after the page is shown, you have to post your own message in OnSetActive:

// This message will be received after CMyPropertyPage is shown
#define WM_SHOWPAGE WM_APP+2

BOOL CMyPropertyPage::OnSetActive() {
    if(CPropertyPage::OnSetActive()) {
        PostMessage(WM_SHOWPAGE, 0, 0L); // post the message
        return TRUE;
    }
    return FALSE;
}

LRESULT CMyPropertyPage::OnShowPage(UINT wParam, LONG lParam) {
    MessageBox(TEXT("Page is visible. [TODO: your code]"));
    return 0L;
}

BEGIN_MESSAGE_MAP(CMyPropertyPage,CPropertyPage)
    ON_MESSAGE(WM_SHOWPAGE, OnShowPage) // add message handler
    // ...
END_MESSAGE_MAP()