void CTreeListFrame::ResetScrollBar()
{
// resetting the horizontal scroll bar
int m_nTotalWidth=0, m_nPageWidth;
CRect m_treeRect;
getTree().GetClientRect(&m_treeRect);
CRect m_wndRect;
GetClientRect(&m_wndRect);
CRect m_headerRect;
getTree().m_wndHeader.GetClientRect(&m_headerRect);
CRect m_barRect;
m_horScrollBar.GetClientRect(m_barRect);
m_nPageWidth = m_treeRect.Width();
m_nTotalWidth = getTree().GetColumnsWidth();
if(m_nTotalWidth > m_nPageWidth)
{
// show the scroll bar and adjust it's size
{
m_horScrollBar.EnableWindow(TRUE);
m_horScrollBar.ShowWindow(SW_SHOW);
// the tree becomes smaller
getTree().SetWindowPos(&wndTop, 0, 0, m_wndRect.Width(), m_wndRect.Height()-m_barRect.Height()-m_headerRect.Height(), SWP_NOMOVE);
if(!VerticalScrollVisible())
// i.e. vertical scroll bar isn't visible
{
m_horScrollBar.SetWindowPos(&wndTop, 0, 0, m_wndRect.Width(), m_barRect.Height(), SWP_NOMOVE);
}
else
{
m_horScrollBar.SetWindowPos(&wndTop, 0, 0, m_wndRect.Width() - GetSystemMetrics(SM_CXVSCROLL), m_barRect.Height(), SWP_NOMOVE);
}
}
m_horScrollBar.SetScrollRange(0, m_nTotalWidth-m_nPageWidth);
// recalculate the offset
{
CRect m_wndHeaderRect;
getTree().m_wndHeader.GetWindowRect(&m_wndHeaderRect);
ScreenToClient(&m_wndHeaderRect);
getTree().m_nOffset = m_wndHeaderRect.left;
m_horScrollBar.SetScrollPos(-getTree().m_nOffset);
}
}
else
{
m_horScrollBar.EnableWindow(FALSE);
// we no longer need it, so hide it!
{
m_horScrollBar.ShowWindow(SW_HIDE);
getTree().SetWindowPos(&wndTop, 0, 0, m_wndRect.Width(), m_wndRect.Height() - m_headerRect.Height(), SWP_NOMOVE);
// the tree takes scroll's place
}
m_horScrollBar.SetScrollRange(0, 0);
// set scroll offset to zero
{
getTree().m_nOffset = 0;
getTree().Invalidate();
CRect m_headerRect;
getTree().m_wndHeader.GetWindowRect(&m_headerRect);
CRect m_wndRect;
GetClientRect(&m_wndRect);
getTree().m_wndHeader.SetWindowPos(&wndTop, getTree().m_nOffset, 0, max(StretchWidth(getTree().GetColumnsWidth(),m_wndRect.Width()),m_wndRect.Width()), m_headerRect.Height(), SWP_SHOWWINDOW);
}
}
}
void CTLFrame::ResetScrollBar()
{
// resetting the horizontal scroll bar
int m_nTotalWidth=0, m_nPageWidth;
CRect m_treeRect;
m_tree.GetClientRect(&m_treeRect);
CRect m_wndRect;
GetClientRect(&m_wndRect);
CRect m_headerRect;
m_tree.m_wndHeader.GetClientRect(&m_headerRect);
CRect m_barRect;
m_horScrollBar.GetClientRect(m_barRect);
m_nPageWidth = m_treeRect.Width();
m_nTotalWidth = m_tree.GetColumnsWidth();
if(m_nTotalWidth > m_nPageWidth)
{
// show the scroll bar and adjust it's size
{
m_horScrollBar.EnableWindow(TRUE);
m_horScrollBar.ShowWindow(SW_SHOW);
// the tree becomes smaller
CRect TreeRect;
m_tree.GetWindowRect(&TreeRect);
if(TreeRect.Width() != m_wndRect.Width() || TreeRect.Height() != m_wndRect.Height()-m_barRect.Height()-m_headerRect.Height())
m_tree.SetWindowPos(&wndTop, 0, 0, m_wndRect.Width(), m_wndRect.Height()-m_barRect.Height()-m_headerRect.Height(), SWP_NOMOVE);
CRect ScrollRect;
m_horScrollBar.GetWindowRect(&ScrollRect);
if(!VerticalScrollVisible())
// i.e. vertical scroll bar isn't visible
{
m_horScrollBar.SetWindowPos(&wndTop, 0, 0, m_wndRect.Width(), m_barRect.Height(), SWP_NOMOVE);
}
else
{
m_horScrollBar.SetWindowPos(&wndTop, 0, 0, m_wndRect.Width() - GetSystemMetrics(SM_CXVSCROLL), m_barRect.Height(), SWP_NOMOVE);
}
}
SCROLLINFO si;
si.fMask = SIF_PAGE | SIF_RANGE;
si.nPage = m_treeRect.Width();
si.nMin = 0;
si.nMax = m_nTotalWidth;
m_horScrollBar.SetScrollInfo(&si, FALSE);
// recalculate the offset
{
CRect m_wndHeaderRect;
m_tree.m_wndHeader.GetWindowRect(&m_wndHeaderRect);
ScreenToClient(&m_wndHeaderRect);
m_tree.m_nOffset = m_wndHeaderRect.left;
m_horScrollBar.SetScrollPos(-m_tree.m_nOffset);
}
}
else
{
m_horScrollBar.EnableWindow(FALSE);
// we no longer need it, so hide it!
{
m_horScrollBar.ShowWindow(SW_HIDE);
// the tree takes scroll's place
CRect TreeRect;
m_tree.GetClientRect(&TreeRect);
m_tree.SetWindowPos(&wndTop, 0, 0, m_wndRect.Width(), m_wndRect.Height() - m_headerRect.Height(), SWP_NOMOVE);
}
m_horScrollBar.SetScrollRange(0, 0);
// set scroll offset to zero
{
m_tree.m_nOffset = 0;
m_tree.Invalidate();
CRect m_headerRect;
m_tree.m_wndHeader.GetWindowRect(&m_headerRect);
CRect m_wndRect;
GetClientRect(&m_wndRect);
m_tree.m_wndHeader.SetWindowPos(&wndTop, m_tree.m_nOffset, 0, max(StretchWidth(m_tree.GetColumnsWidth(),m_wndRect.Width()),m_wndRect.Width()), m_headerRect.Height(), SWP_SHOWWINDOW);
}
}
}
