custom draw listctrl: how to draw little colored rect in subitem
Hi all,
The listctrl i use now fills the subitem of an item in the listctrl with a color. This means the complete rectangle of the field is filled with that color. I think it looks better when it is slightly smaller, but i do not know if this is possible. Does somebody has a clue?
This is what i use now:
Code:
void CMyDlg::OnCustomDrawList(NMHDR* pNMHDR, LRESULT* pResult)
{
*pResult = 0;
LPNMLVCUSTOMDRAW lplvcd = (LPNMLVCUSTOMDRAW)pNMHDR;
// Retrieve row
int row = lplvcd->nmcd.dwItemSpec;
// Check if row is between valid boundaries
if(row < 0 || row > m_lst.GetItemCount() - 1)
{
if(lplvcd->nmcd.dwDrawStage == CDDS_PREPAINT)
{
*pResult = CDRF_NOTIFYSUBITEMDRAW;
}
else
{
*pResult = CDRF_DODEFAULT;
}
return;
}
// Retrieve item data, which contains ID, color
CItemData* pData = (CItemData*)m_lst.GetItemData(row);
switch(lplvcd->nmcd.dwDrawStage)
{
case CDDS_PREPAINT :
{
*pResult = CDRF_NOTIFYITEMDRAW;
return;
}
// Modify item text and or background
case CDDS_ITEMPREPAINT:
{
// Set color of text
lplvcd->clrText = RGB(0,0,0);
// If you want the sub items the same as the item,
// set *pResult to CDRF_NEWFONT
*pResult = CDRF_NOTIFYSUBITEMDRAW;
return;
}
// Modify sub item text and/or background
case CDDS_SUBITEM | CDDS_PREPAINT | CDDS_ITEM:
{
// Check if item to be drawn is the color column
if(lplvcd->iSubItem == 1)
{
// Retrieve color from itemdata
if(pData)
lplvcd->clrTextBk = pData->m_cItemColor;
}
*pResult = CDRF_NEWFONT;
return;
}
default:// it wasn't a notification that was interesting to us.
*pResult = CDRF_DODEFAULT;
}
}
BOOL CMyDlg::OnEraseBkgnd(CDC* pDC)
{
CRect rect;
GetClientRect(rect);
CBrush brush0(RGB(247, 247, 247));
CBrush brush1(RGB(255, 255, 255));
SCROLLINFO si;
ZeroMemory(&si, sizeof(SCROLLINFO));
si.cbSize = sizeof(SCROLLINFO);
si.fMask = SIF_POS;
GetScrollInfo(SB_HORZ, &si);
rect.left -= si.nPos;
for(int i = 0; i <= m_lst.GetItemCount(); i++)
{
rect.right = rect.left + m_lst.GetColumnWidth(i);
pDC->FillRect(&rect,i%2 ? &brush1 : &brush0);
rect.left += m_lst.GetColumnWidth(i);
}
brush0.DeleteObject();
brush1.DeleteObject();
return FALSE;
//return CDialog::OnEraseBkgnd(pDC);
}
