void wxHeaderCtrl::DoSetCount(unsigned int count)
{
unsigned n;
// first delete all old columns
const unsigned countOld = GetShownColumnsCount();
for ( n = 0; n < countOld; n++ )
{
if ( !Header_DeleteItem(GetHwnd(), 0) )
{
wxLogLastError(wxT("Header_DeleteItem"));
}
}
// update the column indices order array before changing m_numColumns
DoResizeColumnIndices(m_colIndices, count);
// and add the new ones
m_numColumns = count;
m_isHidden.resize(m_numColumns);
for ( n = 0; n < count; n++ )
{
const wxHeaderColumn& col = GetColumn(n);
if ( col.IsShown() )
{
m_isHidden[n] = false;
DoInsertItem(col, n);
}
else // hidden initially
{
m_isHidden[n] = true;
}
}
}
wxDataViewItem TreeListModel::InsertItem(const wxDataViewItem& insertBeforeMe, const wxVector<wxVariant>& data, wxClientData *clientData)
{
wxDataViewItem ch = DoInsertItem(insertBeforeMe, data, false, clientData);
if ( ch.IsOk() ) {
TreeListModel_Item* node = reinterpret_cast<TreeListModel_Item*>(ch.GetID());
ItemAdded(wxDataViewItem(node->GetParent()), ch);
}
return ch;
}
void wxHeaderCtrl::DoUpdate(unsigned int idx)
{
// the native control does provide Header_SetItem() but it's inconvenient
// to use it because it sends HDN_ITEMCHANGING messages and we'd have to
// arrange not to block setting the width from there and the logic would be
// more complicated as we'd have to reset the old values as well as setting
// the new ones -- so instead just recreate the column
const wxHeaderColumn& col = GetColumn(idx);
if ( col.IsHidden() )
{
// column is hidden now
if ( !m_isHidden[idx] )
{
// but it wasn't hidden before, so remove it
if ( !Header_DeleteItem(GetHwnd(), MSWToNativeIdx(idx)) )
wxLogLastError(wxS("Header_DeleteItem()"));
m_isHidden[idx] = true;
}
//else: nothing to do, updating hidden column doesn't have any effect
}
else // column is shown now
{
if ( m_isHidden[idx] )
{
m_isHidden[idx] = false;
}
else // and it was shown before as well
{
// we need to remove the old column
if ( !Header_DeleteItem(GetHwnd(), MSWToNativeIdx(idx)) )
wxLogLastError(wxS("Header_DeleteItem()"));
}
DoInsertItem(col, idx);
}
}
