Hey all win32 programmers

Ive recently been coding a program using the listview control and cannot get the columns to stay a fixed size.

Here is my code so far:
Code:
case WM_NOTIFY:
{
	LPNMLISTVIEW pNotify = (LPNMLISTVIEW)lParam;
	if (wParam == IDC_LISTVIEW)
	{
		if(pNotify->hdr.code==HDN_BEGINTRACKW || pNotify->hdr.code==HDN_BEGINTRACKA)
		{
			return TRUE;
		}
	}
}
Does anyone know how to fix this?

Thx in advance.