Outlook风格的使用不同的颜色单列显示新邮件数

// otherwise parent will never receive CDDS_ITEMPREPAINT notification. (GGH)

*pResult = CDRF_NOTIFYITEMDRAW; // reposuition the viewport so the TreeCtrl DefWindowProc doesn´t draw to viewport 0/0

//(pCustomDraw->nmcd.hdc, /*m_nOffset*/0, 0, NULL);

break; case CDDS_ITEMPREPAINT:

// set the background and foregroundcolor of the item to the background, so you don´t see the default drawing of the text

item state(focus,selected..), because it will be drawn of us

nItemState = pCustomDraw->nmcd.uItemState; pCustomDraw->nmcd.uItemState &= ~CDIS_FOCUS;

pCustomDraw->clrText = m_colHilightText;

// remember the drawing rectangle of the item so we can draw it ourselves

m_pTree->GetItemRect((HTREEITEM) pCustomDraw->nmcd.dwItemSpec, &rcItem, TRUE);

*pResult = CDRF_NOTIFYPOSTPAINT;