Keeping track of control width

[Anonymous]

Hi, I have a control from which I regular need the current width, so I created a member variable. I did override OnSize() to get the new width. Where do I get the initial width?

[Anonymous]

Well, I remember from my poor Win32 experience that you get a WM_SIZE after the control is created... so overriding OnSize() might be enough? Propably someone can confirm this? Or is there any other message handler to override and call GetClientRect()?

[BlackSmith]

Try reading here: CWnd::OnGetMinMaxInfo**

--BlackSmith--

**/*The roof is on fire, we don't need no water, let the MF burn*/. BHG.

[Anonymous]

sorry, I dont get the relation to my question about current control size, which is a client window (a listbox) of a dialog. Meanwhile I tried with OnSize(), but OnSize() gets called to late. I need to catch the width somewhere earlier, right after the control is created....

[Lost User]

Overwriting OnCreate() brought no luck... so I found this one:

void CListBoxLovely::PreSubclassWindow()
{
CListBox::PreSubclassWindow();
CRect rect;
GetClientRect(rect);
m_nItemWidth = rect.Width()
}

it works good :)

[Roger Allen]

Initially you will recieve a WM_SIZE before the control is created, and one after the control is created. You could do the following:

static bool first = true ;
if (GetDlgItem(IDC_OF_CONTROL) != NULL && first)
{
// this code will only be executed once.
CRect size ;
GetDlgItem(IDC_OF_CONTROL)->GetWindowRect(&size) ;
first = false ;
// do something with the initial size of the control
}

Roger Allen Sonork 100.10016 I think I need a new quote, I am on the prowl, so look out for a soft cute furry looking animal, which is really a Hippo in disguise. Its probably me.