BOOL CMDIFrameWnd::PreTranslateMessage(MSG* pMsg)
{
// check for special cancel modes for ComboBoxes
if (pMsg->message == WM_LBUTTONDOWN || pMsg->message == WM_NCLBUTTONDOWN)
AfxCancelModes(pMsg->hwnd); // filter clicks
// allow tooltip messages to be filtered
if (CWnd::PreTranslateMessage(pMsg))
return TRUE;
#ifndef _AFX_NO_OLE_SUPPORT
// allow hook to consume message
if (m_pNotifyHook != NULL && m_pNotifyHook->OnPreTranslateMessage(pMsg))
return TRUE;
#endif
CMDIChildWnd* pActiveChild = MDIGetActive();
// current active child gets first crack at it
if (pActiveChild != NULL && pActiveChild->PreTranslateMessage(pMsg))
return TRUE;
if (pMsg->message >= WM_KEYFIRST && pMsg->message <= WM_KEYLAST)
{
// translate accelerators for frame and any children
if (m_hAccelTable != NULL &&
::TranslateAccelerator(m_hWnd, m_hAccelTable, pMsg))
{
return TRUE;
}
// special processing for MDI accelerators last
// and only if it is not in SDI mode (print preview)
if (GetActiveView() == NULL)
{
if (pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN)
{
// the MDICLIENT window may translate it
if (::TranslateMDISysAccel(m_hWndMDIClient, pMsg))
return TRUE;
}
}
}
return FALSE;
}
BOOL CMDIChildWnd::PreTranslateMessage(MSG* pMsg)
{
// check for special cancel modes for combo boxes
if (pMsg->message == WM_LBUTTONDOWN || pMsg->message == WM_NCLBUTTONDOWN)
AfxCancelModes(pMsg->hwnd); // filter clicks
// allow tooltip messages to be filtered
if (CWnd::PreTranslateMessage(pMsg))
return TRUE;
// we can't call 'CFrameWnd::PreTranslate' since it will translate
// accelerators in the context of the MDI Child - but since MDI Child
// windows don't have menus this doesn't work properly. MDI Child
// accelerators must be translated in context of their MDI Frame.
if (pMsg->message >= WM_KEYFIRST && pMsg->message <= WM_KEYLAST)
{
// use document specific accelerator table over m_hAccelTable
HACCEL hAccel = GetDefaultAccelerator();
return hAccel != NULL &&
::TranslateAccelerator(GetMDIFrame()->m_hWnd, hAccel, pMsg);
}
return FALSE;
}
void CFileManagerDlg::OnInitMenuPopup(CMenu* pMenu, UINT nIndex, BOOL bSysMenu)
{
// CDialogEx::OnInitMenuPopup(pPopupMenu, nIndex, bSysMenu);
AfxCancelModes(m_hWnd);
if (bSysMenu)
return; // don't support system menu
ENSURE_VALID(pMenu);
// check the enabled state of various menu items
CCmdUI state;
state.m_pMenu = pMenu;
ASSERT(state.m_pOther == NULL);
ASSERT(state.m_pParentMenu == NULL);
// determine if menu is popup in top-level menu and set m_pOther to
// it if so (m_pParentMenu == NULL indicates that it is secondary popup)
HMENU hParentMenu;
if (AfxGetThreadState()->m_hTrackingMenu == pMenu->m_hMenu)
state.m_pParentMenu = pMenu; // parent == child for tracking popup
else if ((hParentMenu = ::GetMenu(m_hWnd)) != NULL)
{
CWnd* pParent = GetTopLevelParent();
// child windows don't have menus -- need to go to the top!
if (pParent != NULL &&
(hParentMenu = pParent->GetMenu()->GetSafeHmenu()) != NULL)
{
int nIndexMax = ::GetMenuItemCount(hParentMenu);
for (int nItemIndex = 0; nItemIndex < nIndexMax; nItemIndex++)
{
if (::GetSubMenu(hParentMenu, nItemIndex) == pMenu->m_hMenu)
{
// when popup is found, m_pParentMenu is containing menu
state.m_pParentMenu = CMenu::FromHandle(hParentMenu);
break;
}
}
}
}
state.m_nIndexMax = pMenu->GetMenuItemCount();
for (state.m_nIndex = 0; state.m_nIndex < state.m_nIndexMax;
state.m_nIndex++)
{
state.m_nID = pMenu->GetMenuItemID(state.m_nIndex);
if (state.m_nID == 0)
continue; // menu separator or invalid cmd - ignore it
ASSERT(state.m_pOther == NULL);
ASSERT(state.m_pMenu != NULL);
if (state.m_nID == (UINT)-1)
{
// possibly a popup menu, route to first item of that popup
state.m_pSubMenu = pMenu->GetSubMenu(state.m_nIndex);
if (state.m_pSubMenu == NULL ||
(state.m_nID = state.m_pSubMenu->GetMenuItemID(0)) == 0 ||
state.m_nID == (UINT)-1)
{
continue; // first item of popup can't be routed to
}
state.DoUpdate(this, FALSE); // popups are never auto disabled
}
else
{
// normal menu item
// Auto enable/disable if frame window has 'm_bAutoMenuEnable'
// set and command is _not_ a system command.
state.m_pSubMenu = NULL;
state.DoUpdate(this, state.m_nID < 0xF000);
}
// adjust for menu deletions and additions
UINT nCount = pMenu->GetMenuItemCount();
if (nCount < state.m_nIndexMax)
{
state.m_nIndex -= (state.m_nIndexMax - nCount);
while (state.m_nIndex < nCount &&
pMenu->GetMenuItemID(state.m_nIndex) == state.m_nID)
{
state.m_nIndex++;
}
}
state.m_nIndexMax = nCount;
}
}
