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How do I add scrollbars to a dialog [message #51985]

Sun, 30 June 2019 14:46

awksed
Messages: 71
Registered: April 2012

Member

I have a TopWindow derived dialog with (currently) empty layout and StaticText and ArrayCtrl controls inserted with new and Add().

The dialog is resizable.

I wish to allow controls hidden by the resizing to be scrolled into view.

I added to the dialog ctor:

AddFrame(m_Sb); // (ScrollBars m_Sb;)

m_Sb.HideX();
m_Sb.WhenScroll = [=] { Ctrl::Refresh(); };

but no joy (no scrollbar appears).

How do I do this?

Thanks.

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Re: How do I add scrollbars to a dialog [message #51997 is a reply to message #51985]

Mon, 01 July 2019 12:37

awksed
Messages: 71
Registered: April 2012

Member

Got a little further with this. V scrollbar appears ok but client ArrayCtrl and StaticText controls are not redrawn.

How do I get the visible area to redraw on scrolling?

MyDlg::MyDlg()
{
AddFrame(m_Sb); // (ScrollBars m_Sb;)

m_Sb.HideX();
m_Sb.WhenScroll = [=] { Ctrl::Refresh(); };
}

void MyDlg::Init()
{
.
.
.
Size S = {0, nWindowHeight};

m_Sb.SetTotal(S);
m_Sb.SetPageY(nWindowHeight); // No scrollbar initially
m_Sb.SetLine(0);
}

void MyDlg::Layout()
{
m_Sb.SetPageY(GetRect().GetSize());
}

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