///////////////////////////////////////////////////////////////////////////////
// OnKillFocus
void XComboList::OnKillFocus(CWnd* pNewWnd)
{
//TRACE0("in XComboList::OnKillFocus\n");
CWnd::OnKillFocus(pNewWnd);
m_nCount++;
if (m_nCount > 2)
{
SendRegisteredMessage(WM_XCOMBOLIST_VK_ESCAPE, 0, 0);
}
}
///////////////////////////////////////////////////////////////////////////////
// OnChar
void CXEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
// handle escape and return, in case edit does NOT have focus
if (m_pParent)
{
if (nChar == VK_ESCAPE)
{
SendRegisteredMessage(WM_XEDIT_VK_ESCAPE);
return;
}
else if (nChar == VK_RETURN)
{
SendRegisteredMessage(WM_XEDIT_KILL_FOCUS);
return;
}
}
CEdit::OnChar(nChar, nRepCnt, nFlags);
}
///////////////////////////////////////////////////////////////////////////////
// PreTranslateMessage
BOOL CXEdit::PreTranslateMessage(MSG* pMsg)
{
// handle WM_KEYDOWN in case the edit has focus - otherwise
// it will be sent to parent, bypassing WM_CHAR
if (pMsg->message == WM_KEYDOWN)
{
if (pMsg->wParam == VK_RETURN)
{
SendRegisteredMessage(WM_XEDIT_KILL_FOCUS);
return TRUE;
}
else if (pMsg->wParam == VK_ESCAPE)
{
SendRegisteredMessage(WM_XEDIT_VK_ESCAPE);
return TRUE;
}
}
return CEdit::PreTranslateMessage(pMsg);
}
///////////////////////////////////////////////////////////////////////////////
// PreTranslateMessage
BOOL XComboList::PreTranslateMessage(MSG* pMsg)
{
switch (pMsg->message)
{
case WM_KEYDOWN:
{
///////////////////////////////////////////////////////////////////
// we need to trap all cursor keys & alpha keys to reposition the
// scroll bar
///////////////////////////////////////////////////////////////////
//TRACE(" WM_KEYDOWN\n");
SCROLLINFO si =
{
sizeof(SCROLLINFO),
SIF_ALL | SIF_DISABLENOSCROLL,
};
m_wndSBVert.GetScrollInfo(&si);
BOOL bSetScrollInfo = FALSE;
int nIndex = 0;
if (::IsWindow(m_ListBox.m_hWnd))
nIndex = m_ListBox.GetCurSel();
if (nIndex == LB_ERR || nIndex < 0)
nIndex = 0;
// use index from listbox, because scroll position cannot be relied
// upon here
switch (pMsg->wParam)
{
case VK_RETURN:
SendRegisteredMessage(WM_XCOMBOLIST_VK_RETURN, 0, 0);
break;
case VK_ESCAPE:
SendRegisteredMessage(WM_XCOMBOLIST_VK_ESCAPE, 0, 0);
break;
// handle scrolling messages
case VK_DOWN:
si.nPos = nIndex + 1;
bSetScrollInfo = TRUE;
break;
case VK_END:
si.nPos = si.nMax;
bSetScrollInfo = TRUE;
break;
case VK_HOME:
si.nPos = 0;
bSetScrollInfo = TRUE;
break;
case VK_NEXT: // PAGE DOWN
si.nPos = nIndex + (si.nPage-1);
bSetScrollInfo = TRUE;
break;
case VK_PRIOR: // PAGE UP
si.nPos = nIndex - (si.nPage - 1);
bSetScrollInfo = TRUE;
break;
case VK_UP:
si.nPos = nIndex - 1;
bSetScrollInfo = TRUE;
break;
default:
if (pMsg->wParam >= 0x41/*VK_A*/ && pMsg->wParam <= 0x5A/*VK_Z*/)
{
// this was an alpha key - try to find listbox index
CString strAlpha;
strAlpha = (_TCHAR) pMsg->wParam;
int nIndex2 = 0;
if (::IsWindow(m_ListBox.m_hWnd))
nIndex2 = m_ListBox.FindString(nIndex, strAlpha);
if (nIndex2 != LB_ERR)
{
si.nPos = nIndex2;
bSetScrollInfo = TRUE;
}
}
break;
}
if (bSetScrollInfo)
{
// let parent know the selection has changed
SendRegisteredMessage(WM_XCOMBOLIST_KEYDOWN, 0, 0);
// update scrollbar
if (si.nPos < 0)
si.nPos = 0;
if (si.nPos > si.nMax)
si.nPos = si.nMax;
m_wndSBVert.SetScrollInfo(&si);
}
break;
}
case WM_LBUTTONUP:
SendRegisteredMessage(WM_XCOMBOLIST_LBUTTONUP, 0, 0);
break;
}
return CWnd::PreTranslateMessage(pMsg);
}
///////////////////////////////////////////////////////////////////////////////
// OnLButtonDown
void XComboList::OnLButtonUp(UINT nFlags, CPoint point)
{
SendRegisteredMessage(WM_XCOMBOLIST_LBUTTONUP, 0, 0);
CWnd::OnLButtonUp(nFlags, point);
}
///////////////////////////////////////////////////////////////////////////////
// OnKillFocus
void CXEdit::OnKillFocus(CWnd* pNewWnd)
{
CEdit::OnKillFocus(pNewWnd);
SendRegisteredMessage(WM_XEDIT_KILL_FOCUS);
}
