C / C++ / MFC

#define UWM_DOMYFIRSTHING (WM_APP + 1)

LRESULT OnDoMyFirstThing( WPARAM wParam, LPARAM lParam );

BEGIN_MESSAGE_MAP(CMyDialogClass, CDialog)
    //{{AFX_MSG_MAP(CMyDialogClass)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_WM_CLOSE()
    //}}AFX_MSG_MAP
    ON_MESSAGE( UWM_DOMYFIRSTTHING, OnDoMyFirstThing ) // This line is added manually
END_MESSAGE_MAP()

LRESULT CMyDialogClass::OnDoMyFirstThing( WPARAM wParam, LPARAM lParam )
{
    // Do whatever you need to do, the dialog is now visible
}

PostMessage( UWM_DOMYFIRSTTHING );

#define UWM_DELETEFILE	(WM_APP + 1)

LRESULT OnDeleteFile(WPARAM wParam, LPARAM lParam);

BEGIN_MESSAGE_MAP(CStatusDlg, CDialog)
	ON_MESSAGE(UWM_DELETEFILE, OnDeleteFile)
END_MESSAGE_MAP()

BOOL CStatusDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	PostMessage(UWM_DELETEFILE );
	return TRUE;  
}

LRESULT CStatusDlg::OnDeleteFile(WPARAM wParam, LPARAM lParam)
{
	//dialog should be visible but isn't
}

void CShowDlg::OnPaint() 
{
    static BOOL bShown = FALSE;
    if (IsIconic())
    {
        CPaintDC dc(this); // device context for painting

        SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

        // Center icon in client rectangle
        int cxIcon = GetSystemMetrics(SM_CXICON);
        int cyIcon = GetSystemMetrics(SM_CYICON);
        CRect rect;
        GetClientRect(&rect);
        int x = (rect.Width() - cxIcon + 1) / 2;
        int y = (rect.Height() - cyIcon + 1) / 2;

        // Draw the icon
        dc.DrawIcon(x, y, m_hIcon);
    }
    else
    {
        CDialog::OnPaint();
    }
    if( !bShown )
    {
        // Write code here or post your message
        bShown = TRUE;
    }
}

sschilachi wrote:

I would like call a function as soon as a dialog is open and visible, but i cannot find a way of telling when this is so.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

ramamaru wrote:

to get '0' as output and not '1',i.e.the 1st element in the array.

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

ramamaru wrote:

to get '0' as output and not '1',i.e.the 1st element in the array.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow