C++ wxListItem::SetBackgroundColour方法代码示例

long wxCheckedListCtrl::InsertItem(wxListItem &info)
{
	int additionalstate = GetAndRemoveAdditionalState(&info.m_state, info.m_stateMask);
	if (!(info.m_mask & wxLIST_MASK_STATE) ||
		!(info.m_stateMask & wxLIST_STATE_ENABLED)) {

		// if not specified, the default additional state is ENABLED
		additionalstate = wxLIST_STATE_ENABLED;
	}

	// we always want to insert items with images...
	info.m_mask |= wxLIST_MASK_IMAGE;
	info.m_image = GetItemImageFromAdditionalState(additionalstate);
	info.SetBackgroundColour(GetBgColourFromAdditionalState(additionalstate));

	int itemcount = GetItemCount();
	wxASSERT_MSG(info.m_itemId <= itemcount, wxT("Invalid index !"));
	wxASSERT_MSG((int)m_stateList.GetCount() == (int)GetItemCount(),
					wxT("Something wrong !"));
	if (info.m_itemId == itemcount) {

		// we are adding a new item at the end of the list
		m_stateList.Add(additionalstate);

	} else {

		// we must shift all following items
		for (int i=itemcount; i > info.m_itemId; i++)
			m_stateList[i] = m_stateList[i-1];
		m_stateList[info.m_itemId] = additionalstate;
	}
	
	return wxListCtrl::InsertItem(info);
}

bool wxCheckedListCtrl::SetItem(wxListItem &info)
{
#if CLC_VBAM_USAGE

	// only col 0 gets a checkbox
	if (info.GetColumn())
		return wxListCtrl::SetItem(info);

#endif
	// remove the checked & enabled states from the state flag:
	// we'll store them in our separate array
	int additionalstate = GetAndRemoveAdditionalState(&info.m_state, info.m_stateMask);

	// set image index
	// we will ignore the info.m_image field since we need
	// to overwrite it...
	if (info.m_mask & wxLIST_MASK_STATE)
	{
		// if some state is not included in the state mask, then get the state info
		// from our internal state array
		if (!(info.m_stateMask & wxLIST_STATE_ENABLED))
			additionalstate |= (m_stateList[info.m_itemId] & wxLIST_STATE_ENABLED);

		if (!(info.m_stateMask & wxLIST_STATE_CHECKED))
			additionalstate |= (m_stateList[info.m_itemId] & wxLIST_STATE_CHECKED);

		// state is valid: use it to determine the image to set...
		info.m_mask |= wxLIST_MASK_IMAGE;
		info.m_image = GetItemImageFromAdditionalState(additionalstate);
		// since when changing the background color, also the foreground color
		// and the font of the item are changed, we try to respect the user
		// choices of such attributes
		info.SetTextColour(this->GetItemTextColour(info.GetId()));
#if wxCHECK_VERSION(2, 6, 2)
		// before wx 2.6.2 the wxListCtrl::SetItemFont function is missing
		info.SetFont(this->GetItemFont(info.GetId()));
#endif
		// change the background color to respect the enabled/disabled status...
		info.SetBackgroundColour(GetBgColourFromAdditionalState(additionalstate));
		m_stateList[info.m_itemId] = additionalstate;
	}
	else
	{
		// state is invalid; don't change image
		info.m_mask &= ~wxLIST_MASK_IMAGE;
	}

	// save the changes
	return wxListCtrl::SetItem(info);
}

void wxAdvancedListCtrl::ColourListItem(wxListItem &info)
{
    static bool SwapColour = false;

    wxColour col;
    wxListItemAttr *ListItemAttr = info.GetAttributes();

    // Don't change a background colour we didn't set.
    if (ListItemAttr && ListItemAttr->HasBackgroundColour())
    {
        return;
    }

    // light grey coolness
    if (SwapColour)
        col = ItemShade;
    else
        col = BgColor;

    SwapColour = !SwapColour;

    info.SetBackgroundColour(col);
}