BOOL CListBox::OnChildNotify(UINT message, WPARAM wParam, LPARAM lParam,
LRESULT* pResult)
{
switch (message)
{
case WM_DRAWITEM:
ASSERT(pResult == NULL); // no return value expected
DrawItem((LPDRAWITEMSTRUCT)lParam);
break;
case WM_MEASUREITEM:
ASSERT(pResult == NULL); // no return value expected
MeasureItem((LPMEASUREITEMSTRUCT)lParam);
break;
case WM_COMPAREITEM:
ASSERT(pResult != NULL); // return value expected
*pResult = CompareItem((LPCOMPAREITEMSTRUCT)lParam);
break;
case WM_DELETEITEM:
ASSERT(pResult == NULL); // no return value expected
DeleteItem((LPDELETEITEMSTRUCT)lParam);
break;
case WM_VKEYTOITEM:
*pResult = VKeyToItem(LOWORD(wParam), HIWORD(wParam));
break;
case WM_CHARTOITEM:
*pResult = CharToItem(LOWORD(wParam), HIWORD(wParam));
break;
default:
return CWnd::OnChildNotify(message, wParam, lParam, pResult);
}
return TRUE;
}
BOOL CListBox::OnChildNotify( UINT message, WPARAM wParam, LPARAM lParam,
LRESULT *pResult )
/**********************************************/
{
switch( message ) {
case WM_CHARTOITEM:
*pResult = CharToItem( LOWORD( wParam ), HIWORD( wParam ) );
return( TRUE );
case WM_COMPAREITEM:
*pResult = CompareItem( (LPCOMPAREITEMSTRUCT)lParam );
return( TRUE );
case WM_DELETEITEM:
DeleteItem( (LPDELETEITEMSTRUCT)lParam );
return( TRUE );
case WM_DRAWITEM:
DrawItem( (LPDRAWITEMSTRUCT)lParam );
return( TRUE );
case WM_MEASUREITEM:
MeasureItem( (LPMEASUREITEMSTRUCT)lParam );
return( TRUE );
case WM_VKEYTOITEM:
*pResult = VKeyToItem( LOWORD( wParam ), HIWORD( wParam ) );
return( TRUE );
}
return( FALSE );
}
//*****************************************************************************
//
// Function Name: RGridCtrl::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
//
// Description: Message handler for WM_KEYDOWN.
//
// Returns: None
//
// Exceptions: None
//
//*****************************************************************************
void RGridCtrlBase::OnKeyDown(UINT nChar, UINT, UINT)
{
int nCurSel = GetCurSel() ;
int nRowOffset = 0 ;
int nColOffset = 0 ;
int nCurRow = nCurSel / m_nNumCols ;
int nCurCol = nCurSel % m_nNumCols ;
switch (nChar)
{
case VK_UP:
nRowOffset = -1;
break ;
case VK_DOWN:
nRowOffset = 1 ;
break ;
case VK_LEFT:
nColOffset = -1 ;
break ;
case VK_RIGHT:
nColOffset = 1 ;
break ;
case VK_PRIOR:
nRowOffset = -m_cxVisibleRows ;
break ;
case VK_HOME:
nRowOffset = -nCurRow ;
nColOffset = -nCurCol ;
break ;
case VK_NEXT:
nRowOffset = m_cxVisibleRows ;
break ;
case VK_END:
nRowOffset = GetCount() / m_nNumCols - nCurRow ;
nColOffset = GetCount() % m_nNumCols - nCurCol ;
break ;
default:
// See if we're suppose to send it off to the parent
if (GetStyle() & LBS_WANTKEYBOARDINPUT)
{
VKeyToItem( nChar, GetCurSel() ) ;
}
return ;
}
if (nCurSel < 0)
{
//
// If there was no previously selected item, default
// to the first item in the list.
//
nCurRow = nCurCol = 0 ;
nRowOffset = nColOffset = 0 ;
}
else
{
//
// Determine the new row and column, making sure to
// keep them within bounds
//
nCurRow += nRowOffset ;
nCurRow = max( 0, min( nCurRow, GetCount() / m_nNumCols ) ) ;
nCurCol += nColOffset ;
nCurCol = max( 0, min( nCurCol, m_nNumCols - 1 ) ) ;
if (nCurRow == GetCount() / m_nNumCols)
{
nCurCol = min( nCurCol, GetCount() % m_nNumCols - 1 ) ;
}
}
int nNewSel = nCurRow * m_nNumCols + nCurCol ;
if (nNewSel != nCurSel)
{
if (nCurRow < m_nTopCellRow || nCurRow >= m_nTopCellRow + m_cxVisibleRows ||
nCurCol < m_nTopCellCol || nCurCol >= m_nTopCellCol + m_cxVisibleCols)
{
SetTopIndex( max( 0, GetTopIndex() + (nNewSel - nCurSel) )) ;
}
SetCurSel( nNewSel ) ;
if (GetStyle() & LBS_NOTIFY)
{
GetParent()->PostMessage(WM_COMMAND,
MAKEWPARAM( GetDlgCtrlID(), LBN_SELCHANGE ),
(LPARAM) GetSafeHwnd()) ;
}
}
}
