xlistctrl.cpp

VC＋＋开发的一个电话录音程序

	}
	else
	{
		GetSubItemRect(nItem, nSubItem, LVIR_BOUNDS, rect);
	}

	InvalidateRect(&rect);
	UpdateWindow();
}

///////////////////////////////////////////////////////////////////////////////
// GetColumns
int CXListCtrl::GetColumns()
{
	return GetHeaderCtrl()->GetItemCount();
}

///////////////////////////////////////////////////////////////////////////////
// GetItemData
//
// The GetItemData and SetItemData functions allow for app-specific data
// to be stored, by using an extra field in the XLISTCTRLDATA struct.
//
DWORD CXListCtrl::GetItemData(int nItem)
{
	ASSERT(nItem >= 0);
	ASSERT(nItem < GetItemCount());
	if ((nItem < 0) || nItem >= GetItemCount())
		return 0;

	XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(nItem);
	if (!pXLCD)
	{
		return 0;
	}

	return pXLCD->dwItemData;
}

///////////////////////////////////////////////////////////////////////////////
// SetItemData
BOOL CXListCtrl::SetItemData(int nItem, DWORD dwData)
{
	ASSERT(nItem >= 0);
	ASSERT(nItem < GetItemCount());
	if ((nItem < 0) || nItem >= GetItemCount())
		return FALSE;

	XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(nItem);
	if (!pXLCD)
	{
		return FALSE;
	}

	pXLCD->dwItemData = dwData;

	return TRUE;
}

///////////////////////////////////////////////////////////////////////////////
// GetHeaderCheckedState
//
// The GetHeaderCheckedState and SetHeaderCheckedState may be used to toggle
// the checkbox in a column header.
//     0 = no checkbox
//     1 = unchecked
//     2 = checked
//
int CXListCtrl::GetHeaderCheckedState(int nSubItem)
{
	ASSERT(nSubItem >= 0);
	ASSERT(nSubItem < GetColumns());
	if ((nSubItem < 0) || nSubItem >= GetColumns())
		return -1;

	HDITEM hditem;

	// use the image index (0 or 1) to indicate the checked status
	hditem.mask = HDI_IMAGE;
	m_HeaderCtrl.GetItem(nSubItem, &hditem);
	return hditem.iImage;
}

///////////////////////////////////////////////////////////////////////////////
// SetHeaderCheckedState
BOOL CXListCtrl::SetHeaderCheckedState(int nSubItem, int nCheckedState)
{
	ASSERT(nSubItem >= 0);
	ASSERT(nSubItem < GetColumns());
	if ((nSubItem < 0) || nSubItem >= GetColumns())
		return FALSE;
	ASSERT(nCheckedState == 0 || nCheckedState == 1 || nCheckedState == 2);

	HDITEM hditem;

	hditem.mask = HDI_IMAGE;
	hditem.iImage = nCheckedState;
	m_HeaderCtrl.SetItem(nSubItem, &hditem);

	return TRUE;
}

///////////////////////////////////////////////////////////////////////////////
// OnColumnClick
BOOL CXListCtrl::OnColumnClick(NMHDR* pNMHDR, LRESULT* pResult)
{
	NMLISTVIEW* pnmlv = (NMLISTVIEW*)pNMHDR;

	int nSubItem = pnmlv->iSubItem;

	int nCheckedState = GetHeaderCheckedState(nSubItem);

	// 0 = no checkbox
	if (nCheckedState != XHEADERCTRL_NO_IMAGE)
	{
		nCheckedState = (nCheckedState == 1) ? 2 : 1;
		SetHeaderCheckedState(nSubItem, nCheckedState);

		m_HeaderCtrl.UpdateWindow();

		for (int nItem = 0; nItem < GetItemCount(); nItem++)
		{
			XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(nItem);
			if (!pXLCD)
			{
				continue;
			}

			if (pXLCD[nSubItem].nCheckedState != -1)
			{
				pXLCD[nSubItem].nCheckedState = nCheckedState - 1;
				UpdateSubItem(nItem, nSubItem);
			}
		}
	}

	*pResult = 0;
	return FALSE;		// return FALSE to send message to parent also -
						// NOTE:  MSDN documentation is incorrect
}

///////////////////////////////////////////////////////////////////////////////
// CountCheckedItems
int CXListCtrl::CountCheckedItems(int nSubItem)
{
	ASSERT(nSubItem >= 0);
	ASSERT(nSubItem < GetColumns());
	if ((nSubItem < 0) || nSubItem >= GetColumns())
		return 0;

	int nCount = 0;

	for (int nItem = 0; nItem < GetItemCount(); nItem++)
	{
		XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(nItem);
		if (!pXLCD)
		{
			continue;
		}

		if (pXLCD[nSubItem].nCheckedState == 1)
			nCount++;
	}

	return nCount;
}

///////////////////////////////////////////////////////////////////////////////
// OnSysColorChange
void CXListCtrl::OnSysColorChange()
{
	TRACE(_T("in CXListCtrl::OnSysColorChange\n"));

	CListCtrl::OnSysColorChange();

	m_cr3DFace        = ::GetSysColor(COLOR_3DFACE);
	m_cr3DHighLight   = ::GetSysColor(COLOR_3DHIGHLIGHT);
	m_cr3DShadow      = ::GetSysColor(COLOR_3DSHADOW);
	m_crBtnFace       = ::GetSysColor(COLOR_BTNFACE);
	m_crBtnShadow     = ::GetSysColor(COLOR_BTNSHADOW);
	m_crBtnText       = ::GetSysColor(COLOR_BTNTEXT);
	m_crGrayText      = ::GetSysColor(COLOR_GRAYTEXT);
	m_crHighLight     = ::GetSysColor(COLOR_HIGHLIGHT);
	m_crHighLightText = ::GetSysColor(COLOR_HIGHLIGHTTEXT);
	m_crWindow        = ::GetSysColor(COLOR_WINDOW);
	m_crWindowText    = ::GetSysColor(COLOR_WINDOWTEXT);
}


#ifndef DO_NOT_INCLUDE_XCOMBOLIST

///////////////////////////////////////////////////////////////////////////////
// UnpressComboButton
void CXListCtrl::UnpressComboButton()
{
	static BOOL bFlag = FALSE;
	if (bFlag)
		return;
	bFlag = TRUE;

	if (m_bComboIsClicked)
	{
		if (m_nComboItem >= 0 && m_nComboItem < GetItemCount())
		{
			XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(m_nComboItem);

			if (pXLCD)
			{
				if (m_nComboSubItem >= 0 && m_nComboSubItem < GetColumns())
				{
					pXLCD[m_nComboSubItem].bComboIsClicked = FALSE;

					UpdateSubItem(m_nComboItem, m_nComboSubItem);
				}
			}
		}
	}
	m_bComboIsClicked = FALSE;
	bFlag = FALSE;
}

///////////////////////////////////////////////////////////////////////////////
// OnTimer
//
// Timer usage:
//    1 - used to check if combo button needs to be unpressed,set in
//        OnLButtonDown (when combo button is clicked)
//    2 - used to close combo listbox, set in OnComboEscape (user hits Escape
//        or listbox loses focus)
//    3 - used to get combo listbox selection, then close combo listbox,
//        set in OnComboReturn and OnComboLButtonUp (user hits Enter
//        or clicks on item in listbox)
//    4 - used to get combo listbox selection, set in OnComboKeydown (for
//        example, user hits arrow key in listbox)
//
void CXListCtrl::OnTimer(UINT nIDEvent)
{
	if (nIDEvent == 1)			// timer set when combo button is clicked
	{
		if (m_bComboIsClicked)
		{
			POINT point;
			::GetCursorPos(&point);
			ScreenToClient(&point);

			if (!m_rectComboButton.PtInRect(point))
			{
				UnpressComboButton();
			}
		}
		else if (m_pListBox)
		{
			m_pListBox->SetActive(11);
		}
		else
		{
			KillTimer(nIDEvent);
		}
	}
	else if (nIDEvent == 2)		// close combo listbox
	{
		KillTimer(nIDEvent);

		if (m_pListBox)
		{
			m_pListBox->DestroyWindow();
			delete m_pListBox;
		}
		m_pListBox = NULL;
	}
	else if (nIDEvent == 3)		// get combo listbox selection, then close combo listbox
	{
		KillTimer(nIDEvent);

		if (m_pListBox)
		{
			CString str;
			int i = m_pListBox->GetCurSel();
			if (i != LB_ERR)
			{
				m_pListBox->GetText(i, str);

				if ((m_nComboItem >= 0 && m_nComboItem < GetItemCount()) &&
					(m_nComboSubItem >= 0 && m_nComboSubItem < GetColumns()))
				{
					SetItemText(m_nComboItem, m_nComboSubItem, str);

					UpdateSubItem(m_nComboItem, m_nComboSubItem);

					CWnd *pWnd = GetParent();
					if (!pWnd)
						pWnd = GetOwner();
					if (pWnd && ::IsWindow(pWnd->m_hWnd))
						pWnd->SendMessage(WM_XLISTCTRL_COMBO_SELECTION, 
									m_nComboItem, m_nComboSubItem);
				}
			}

			m_pListBox->DestroyWindow();
			delete m_pListBox;
		}
		m_pListBox = NULL;
	}
	else if (nIDEvent == 4)		// get combo listbox selection
	{
		KillTimer(nIDEvent);

		if (m_pListBox)
		{
			CString str;
			int i = m_pListBox->GetCurSel();
			if (i != LB_ERR)
			{
				m_pListBox->GetText(i, str);

				if ((m_nComboItem >= 0 && m_nComboItem < GetItemCount()) &&
					(m_nComboSubItem >= 0 && m_nComboSubItem < GetColumns()))
				{
					SetItemText(m_nComboItem, m_nComboSubItem, str);

					UpdateSubItem(m_nComboItem, m_nComboSubItem);
				}
			}
		}
	}
}

///////////////////////////////////////////////////////////////////////////////
// OnComboEscape
LRESULT CXListCtrl::OnComboEscape(WPARAM, LPARAM)
{
	KillTimer(1);
	SetTimer(2, 50, NULL);

	// restore original string
	SetItemText(m_nComboItem, m_nComboSubItem, m_strInitialComboString);

	UpdateSubItem(m_nComboItem, m_nComboSubItem);

	return 0;
}

///////////////////////////////////////////////////////////////////////////////
// OnComboReturn
LRESULT CXListCtrl::OnComboReturn(WPARAM, LPARAM)
{
	TRACE(_T("in CXListCtrl::OnComboReturn\n"));
	KillTimer(1);
	SetTimer(3, 50, NULL);
	return 0;
}

///////////////////////////////////////////////////////////////////////////////
// OnComboLButtonUp
LRESULT CXListCtrl::OnComboLButtonUp(WPARAM, LPARAM)
{
	TRACE(_T("in CXListCtrl::OnComboLButtonUp\n"));
	KillTimer(1);
	SetTimer(3, 50, NULL);
	return 0;
}

///////////////////////////////////////////////////////////////////////////////
// OnComboKeydown
LRESULT CXListCtrl::OnComboKeydown(WPARAM, LPARAM)
{
	SetTimer(4, 50, NULL);
	return 0;
}

#endif

#ifndef NO_XLISTCTRL_TOOL_TIPS

///////////////////////////////////////////////////////////////////////////////
// OnToolHitTest
int CXListCtrl::OnToolHitTest(CPoint point, TOOLINFO * pTI) const
{
	LVHITTESTINFO lvhitTestInfo;
	
	lvhitTestInfo.pt = point;
	
	int nItem = ListView_SubItemHitTest(this->m_hWnd, &lvhitTestInfo);
	int nSubItem = lvhitTestInfo.iSubItem;
	TRACE(_T("in CToolTipListCtrl::OnToolHitTest: %d,%d\n"), nItem, nSubItem);

	UINT nFlags = lvhitTestInfo.flags;

	// nFlags is 0 if the SubItemHitTest fails
	// Therefore, 0 & <anything> will equal false
	if (nFlags & LVHT_ONITEMLABEL)
	{
		// If it did fall on a list item,
		// and it was also hit one of the
		// item specific subitems we wish to show tool tips for
		
		// get the client (area occupied by this control
		RECT rcClient;
		GetClientRect(&rcClient);
		
		// fill in the TOOLINFO structure
		pTI->hwnd = m_hWnd;
		pTI->uId = (UINT) (nItem * 1000 + nSubItem + 1);
		pTI->lpszText = LPSTR_TEXTCALLBACK;
		pTI->rect = rcClient;
		
		return pTI->uId;	// By returning a unique value per listItem,
							// we ensure that when the mouse moves over another
							// list item, the tooltip will change
	}
	else
	{
		//Otherwise, we aren't interested, so let the message propagate
		return -1;
	}
}

///////////////////////////////////////////////////////////////////////////////
// OnToolTipText
BOOL CXListCtrl::OnToolTipText(UINT /*id*/, NMHDR * pNMHDR, LRESULT * pResult)
{
	UINT nID = pNMHDR->idFrom;
	TRACE(_T("in CXListCtrl::OnToolTipText: id=%d\n"), nID);
	
	// check if this is the automatic tooltip of the control
	if (nID == 0) 
		return TRUE;	// do not allow display of automatic tooltip,
						// or our tooltip will disappear
	
	// handle both ANSI and UNICODE versions of the message
	TOOLTIPTEXTA* pTTTA = (TOOLTIPTEXTA*)pNMHDR;
	TOOLTIPTEXTW* pTTTW = (TOOLTIPTEXTW*)pNMHDR;
	
	*pResult = 0;
	
	// get the mouse position
	const MSG* pMessage;
	pMessage = GetCurrentMessage();
	ASSERT(pMessage);
	CPoint pt;
	pt = pMessage->pt;		// get the point from the message
	ScreenToClient(&pt);	// convert the point's coords to be relative to this control
	
	// see if the point falls onto a list item
	
	LVHITTESTINFO lvhitTestInfo;
	
	lvhitTestInfo.pt = pt;
	
	int nItem = SubItemHitTest(&lvhitTestInfo);
	int nSubItem = lvhitTestInfo.iSubItem;
	
	UINT nFlags = lvhitTestInfo.flags;
	
	// nFlags is 0 if the SubItemHitTest fails
	// Therefore, 0 & <anything> will equal false
	if (nFlags & LVHT_ONITEMLABEL)
	{
		// If it did fall on a list item,
		// and it was also hit one of the
		// item specific subitems we wish to show tooltips for
		
		CString strToolTip;
		strToolTip = _T("");

		XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(nItem);
		if (pXLCD)
		{
			strToolTip = pXLCD[nSubItem].strToolTip;
		}

		if (!strToolTip.IsEmpty())
		{
			// If there was a CString associated with the list item,
			// copy it's text (up to 80 characters worth, limitation 
			// of the TOOLTIPTEXT structure) into the TOOLTIPTEXT 
			// structure's szText member
			
#ifndef _UNICODE
			if (pNMHDR->code == TTN_NEEDTEXTA)
				lstrcpyn(pTTTA->szText, strToolTip, 80);
			else
				_mbstowcsz(pTTTW->szText, strToolTip, 80);
#else
			if (pNMHDR->code == TTN_NEEDTEXTA)
				_wcstombsz(pTTTA->szText, strToolTip, 80);
			else
				lstrcpyn(pTTTW->szText, strToolTip, 80);
#endif
			return FALSE;	 // we found a tool tip,
		}
	}
	
	return FALSE;	// we didn't handle the message, let the 
					// framework continue propagating the message
}

///////////////////////////////////////////////////////////////////////////////
// SetItemToolTipText
BOOL CXListCtrl::SetItemToolTipText(int nItem, int nSubItem, LPCTSTR lpszToolTipText)
{
	ASSERT(nItem >= 0);
	ASSERT(nItem < GetItemCount());
	if ((nItem < 0) || nItem >= GetItemCount())
		return FALSE;
	ASSERT(nSubItem >= 0);
	ASSERT(nSubItem < GetColumns());
	if ((nSubItem < 0) || nSubItem >= GetColumns())
		return FALSE;

	XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(nItem);
	if (!pXLCD)
	{
		return FALSE;
	}

	pXLCD[nSubItem].strToolTip = lpszToolTipText;

	return TRUE;
}

///////////////////////////////////////////////////////////////////////////////
// GetItemToolTipText
CString CXListCtrl::GetItemToolTipText(int nItem, int nSubItem)
{
	CString strToolTip;
	strToolTip = _T("");

	ASSERT(nItem >= 0);
	ASSERT(nItem < GetItemCount());
	if ((nItem < 0) || nItem >= GetItemCount())
		return strToolTip;
	ASSERT(nSubItem >= 0);
	ASSERT(nSubItem < GetColumns());
	if ((nSubItem < 0) || nSubItem >= GetColumns())
		return strToolTip;

	XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(nItem);
	if (pXLCD)
	{
		strToolTip = pXLCD[nSubItem].strToolTip;
	}

	return strToolTip;
}

///////////////////////////////////////////////////////////////////////////////
// DeleteAllToolTips
void CXListCtrl::DeleteAllToolTips()
{
	int nRow = GetItemCount();
	int nCol = GetColumns();

	for (int nItem = 0; nItem < nRow; nItem++)
	{
		XLISTCTRLDATA *pXLCD = (XLISTCTRLDATA *) CListCtrl::GetItemData(nItem);
		if (pXLCD)
			for (int nSubItem = 0; nSubItem < nCol; nSubItem++)
				pXLCD[nSubItem].strToolTip = _T("");
	}
}

#endif