void CGfxPopupMenu::EnableMenuItems(CMenu * pMenu, CWnd * pParent)
{
ASSERT(pMenu);
ASSERT(pParent);
int nItem = pMenu->GetMenuItemCount();
CCmdUI state;
state.m_pMenu = pMenu;
state.m_nIndex = nItem-1;
state.m_nIndexMax = nItem;
while ((--nItem)>=0)
{
UINT itemId = pMenu->GetMenuItemID(nItem);
if (itemId == (UINT) -1)
{
CMenu *pops = pMenu->GetSubMenu(nItem);
if (pops) EnableMenuItems(pops, pParent);
}
else
{
if (itemId != 0)
{
state.m_nID = itemId;
pParent->OnCmdMsg(itemId, CN_UPDATE_COMMAND_UI, &state, NULL);
state.DoUpdate(pParent, true);
}
}
state.m_nIndex = nItem-1;
}
}
// 参看：http://www.cnblogs.com/hcfalan/archive/2010/11/24/1886139.html
BOOL CDlgImageViewer::ContinueModal()
{
if(m_ToolBar.IsWindowVisible())
{
CFrameWnd* pParent = (CFrameWnd*)m_ToolBar.GetParent();
if(pParent)
m_ToolBar.OnUpdateCmdUI(pParent, (WPARAM)TRUE);
}
CMenu* pMainMenu = GetMenu();
CCmdUI cmdUI;
if (pMainMenu != NULL)
{
for (int n = 0; n < pMainMenu->GetMenuItemCount(); ++n)
{
CMenu* pSubMenu = pMainMenu->GetSubMenu(n);
cmdUI.m_nIndexMax = pSubMenu->GetMenuItemCount();
for (int i = 0; i < cmdUI.m_nIndexMax; ++i)
{
cmdUI.m_nIndex = i;
cmdUI.m_nID = pSubMenu->GetMenuItemID(i);
cmdUI.m_pMenu = pSubMenu;
cmdUI.DoUpdate(this, FALSE);
}
}
}
return CDialogEx::ContinueModal();
}
void CModelessMain::OnInitMenuPopup(CMenu* pPopupMenu, UINT /*nIndex*/, BOOL bSysMenu)
{
if (!bSysMenu)
{
ENSURE(pPopupMenu != NULL);
// check the enabled state of various menu items
CCmdUI state;
state.m_pMenu = pPopupMenu;
ASSERT(state.m_pOther == NULL);
state.m_nIndexMax = pPopupMenu->GetMenuItemCount();
for (state.m_nIndex = 0; state.m_nIndex < state.m_nIndexMax;
state.m_nIndex++)
{
state.m_nID = pPopupMenu->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 = pPopupMenu->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 command is _not_ a system command
state.m_pSubMenu = NULL;
state.DoUpdate(this, state.m_nID < 0xF000);
}
}
}
}
void CDocSelector::OnUpdateCmdUI( CFrameWnd* pTarget, BOOL bDisableIfNoHndler )
{
CCmdUI state;
state.m_pOther = this;
state.m_nIndexMax = 1; // there's only one thing to update
state.m_nID = AFX_IDW_STATUS_BAR;
// allow the statusbar itself to have update handlers
if ( CControlBar::OnCmdMsg( state.m_nID, CN_UPDATE_COMMAND_UI,
&state, NULL ) )
return;
// allow target (owner) to handle the remaining updates
state.DoUpdate( pTarget, FALSE );
}
void CProgressBar::OnUpdateCmdUI(CFrameWnd* pTarget, BOOL bDisableIfNoHndler)
// I'm not entirely sure how much of this is necessary, but it doesn't seem to
// do any harm, and things didn't work properly until I put it in...
{
CCmdUI state;
state.m_pOther = this;
state.m_nIndexMax = (UINT32)m_nCount;
for (state.m_nIndex = 0; state.m_nIndex < state.m_nIndexMax;
state.m_nIndex++)
{
state.m_nID = 0;
state.DoUpdate(pTarget, bDisableIfNoHndler);
}
// update the dialog controls added to the status bar (of which there are none)
UpdateDialogControls(pTarget, bDisableIfNoHndler);
}
//Стандартный вызов ON_UPDATE_COMMAND_UI запрещает элементы меню, но не делает их grayed.
//Чтобы все таки запрещенные элементы меню выглядели как grayed, нужно вызывать эту функцию
//Note: эта функция не перерисовывает меню.
//Возвращает true - если произошли изменения и нужно перерисовать меню, иначе false
bool CMainFrame::_UpdateTopLevelMainMenu(void)
{
CMenu* pMenu = this->GetMenu();
std::vector<UINT> old_menu_state;
//remember old states of all menu items
{
int menu_items_count = pMenu->GetMenuItemCount();
for(int i = 0; i < menu_items_count; ++i)
old_menu_state.push_back(pMenu->GetMenuState(pMenu->GetMenuItemID(i),MF_BYCOMMAND));
}
//Perform update
CCmdUI ui;
ui.m_nIndexMax = pMenu->GetMenuItemCount();
ui.m_pMenu = pMenu;
for (ui.m_nIndex = 0; ui.m_nIndex < ui.m_nIndexMax; ui.m_nIndex++)
{
ui.m_nID = pMenu->GetMenuItemID(ui.m_nIndex);
ui.DoUpdate(this, m_bAutoMenuEnable);
}
//Check: do we need to redraw menu?
{
int menu_items_count = pMenu->GetMenuItemCount();
for(int i = 0; i < menu_items_count; ++i)
{
UINT old_s = old_menu_state[i];
UINT new_s = pMenu->GetMenuState(pMenu->GetMenuItemID(i),MF_BYCOMMAND);
if (old_s!=new_s)
return true; //caller should redraw main menu
}
}
//nothing changed: redraw is not needed
return false;
}
void CIMoteTerminal::OnInitMenuPopup(CMenu* pPopupMenu, UINT nIndex, BOOL bSysMenu)
{
ASSERT(pPopupMenu != NULL);
// Check the enabled state of various menu items.
CCmdUI state;
state.m_pMenu = pPopupMenu;
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 == pPopupMenu->m_hMenu)
state.m_pParentMenu = pPopupMenu; // Parent == child for tracking popup.
else if ((hParentMenu = ::GetMenu(m_hWnd)) != NULL)
{
CWnd* pParent = this;
// Child windows don't have menus--need to go to the top!
if (pParent != NULL &&
(hParentMenu = ::GetMenu(pParent->m_hWnd)) != NULL)
{
int nIndexMax = ::GetMenuItemCount(hParentMenu);
for (int nIndex = 0; nIndex < nIndexMax; nIndex++)
{
if (::GetSubMenu(hParentMenu, nIndex) == pPopupMenu->m_hMenu)
{
// When popup is found, m_pParentMenu is containing menu.
state.m_pParentMenu = CMenu::FromHandle(hParentMenu);
break;
}
}
}
}
state.m_nIndexMax = pPopupMenu->GetMenuItemCount();
for (state.m_nIndex = 0; state.m_nIndex < state.m_nIndexMax;
state.m_nIndex++)
{
state.m_nID = pPopupMenu->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 = pPopupMenu->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, TRUE); // 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, FALSE);
}
// Adjust for menu deletions and additions.
UINT nCount = pPopupMenu->GetMenuItemCount();
if (nCount < state.m_nIndexMax)
{
state.m_nIndex -= (state.m_nIndexMax - nCount);
while (state.m_nIndex < nCount &&
pPopupMenu->GetMenuItemID(state.m_nIndex) == state.m_nID)
{
state.m_nIndex++;
}
}
state.m_nIndexMax = nCount;
}
}
//This method should be called when a pop-up menu is about to become active
void CDiagnostContextMenuManager::OnInitMenuPopup(CMenu* pMenu, UINT nIndex, BOOL bSysMenu)
{
ASSERT(m_pWnd);
if (bSysMenu)
return; // don't support system menu
ASSERT(pMenu != NULL);
// 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_pWnd->m_hWnd)) != NULL)
{
CWnd* pParent = m_pWnd->GetTopLevelParent();
// child windows don't have menus -- need to go to the top!
if (pParent != NULL && (hParentMenu = ::GetMenu(pParent->m_hWnd)) != NULL)
{
int nIndexMax = ::GetMenuItemCount(hParentMenu);
for (int nIndex = 0; nIndex < nIndexMax; nIndex++)
{
if (::GetSubMenu(hParentMenu, nIndex) == 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(m_pWnd, 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(m_pWnd, TRUE);
}
// 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;
}//for
}
void CISenTekAssistantDlg::OnInitMenuPopup(CMenu* pPopupMenu, UINT nIndex, BOOL bSysMenu)
{
ASSERT(pPopupMenu != NULL);
CCmdUI state;
state.m_pMenu = pPopupMenu;
ASSERT(state.m_pOther == NULL);
ASSERT(state.m_pParentMenu == NULL);
HMENU hParentMenu;
if (AfxGetThreadState()->m_hTrackingMenu == pPopupMenu->m_hMenu)
state.m_pParentMenu = pPopupMenu;
else if ((hParentMenu = ::GetMenu(m_hWnd)) != NULL)
{
CWnd* pParent = this;
if (pParent != NULL &&
(hParentMenu = ::GetMenu(pParent->m_hWnd)) != NULL)
{
int nIndexMax = ::GetMenuItemCount(hParentMenu);
for (int nIndex = 0; nIndex < nIndexMax; nIndex++)
{
if (::GetSubMenu(hParentMenu, nIndex) == pPopupMenu->m_hMenu)
{
state.m_pParentMenu = CMenu::FromHandle(hParentMenu);
break;
}
}
}
}
state.m_nIndexMax = pPopupMenu->GetMenuItemCount();
for (state.m_nIndex=0; state.m_nIndex<state.m_nIndexMax; state.m_nIndex++)
{
state.m_nID = pPopupMenu->GetMenuItemID(state.m_nIndex);
if (state.m_nID == 0)
continue;
ASSERT(state.m_pOther == NULL);
ASSERT(state.m_pMenu != NULL);
if (state.m_nID == (UINT)-1)
{
state.m_pSubMenu = pPopupMenu->GetSubMenu(state.m_nIndex);
if (state.m_pSubMenu == NULL ||
(state.m_nID = state.m_pSubMenu->GetMenuItemID(0)) == 0 ||
state.m_nID == (UINT)-1)
{
continue;
}
state.DoUpdate(this, TRUE);
}
else
{
state.m_pSubMenu = NULL;
state.DoUpdate(this, FALSE);
}
UINT nCount = pPopupMenu->GetMenuItemCount();
if (nCount < state.m_nIndexMax)
{
state.m_nIndex -= (state.m_nIndexMax - nCount);
while (state.m_nIndex < nCount &&
pPopupMenu->GetMenuItemID(state.m_nIndex) == state.m_nID)
{
state.m_nIndex++;
}
}
state.m_nIndexMax = nCount;
}
}
void FileScrapDropDlg::OnInitMenuPopup(CMenu* pPopupMenu, xpr_uint_t nIndex, xpr_bool_t bSysMenu)
{
ASSERT(pPopupMenu != XPR_NULL);
//super::OnInitMenuPopup(pPopupMenu, nIndex, bSysMenu);
// for multi-language
BCMenu *pBCPopupMenu = dynamic_cast<BCMenu *>(pPopupMenu);
if (pBCPopupMenu != XPR_NULL)
{
xpr_uint_t sId;
xpr_sint_t sCount = pBCPopupMenu->GetMenuItemCount();
const xpr_tchar_t *sStringId;
const xpr_tchar_t *sString;
xpr::string sMenuText;
CommandStringTable &sCommandStringTable = CommandStringTable::instance();
xpr_sint_t i;
for (i = 0; i < sCount; ++i)
{
sId = pBCPopupMenu->GetMenuItemID(i);
// apply string table
if (sId != 0) // if sId is 0, it's separator.
{
if (sId == -1)
{
// if sId(xpr_uint_t) is -1, it's sub-menu.
pBCPopupMenu->GetMenuText(i, sMenuText, MF_BYPOSITION);
sString = gApp.loadString(sMenuText);
pBCPopupMenu->SetMenuText(i, (xpr_tchar_t *)sString, MF_BYPOSITION);
}
else
{
sStringId = sCommandStringTable.loadString(sId);
if (sStringId != XPR_NULL)
{
sString = gApp.loadString(sStringId);
pBCPopupMenu->SetMenuText(sId, (xpr_tchar_t *)sString, MF_BYCOMMAND);
}
}
}
}
}
// Check the enabled state of various menu items.
CCmdUI sState;
sState.m_pMenu = pPopupMenu;
ASSERT(sState.m_pOther == XPR_NULL);
ASSERT(sState.m_pParentMenu == XPR_NULL);
// Determine if menu is popup in top-level menu and set m_pOther to
// it if so (m_pParentMenu == XPR_NULL indicates that it is secondary popup).
HMENU sParentMenu;
if (AfxGetThreadState()->m_hTrackingMenu == pPopupMenu->m_hMenu)
sState.m_pParentMenu = pPopupMenu; // Parent == child for tracking popup.
else if ((sParentMenu = ::GetMenu(m_hWnd)) != XPR_NULL)
{
CWnd *sParentWnd = this;
// Child windows don't have menus--need to go to the top!
if (sParentWnd != XPR_NULL && (sParentMenu = ::GetMenu(sParentWnd->m_hWnd)) != XPR_NULL)
{
xpr_sint_t sIndex;
xpr_sint_t sIndexMax = ::GetMenuItemCount(sParentMenu);
for (sIndex = 0; sIndex < sIndexMax; ++sIndex)
{
if (::GetSubMenu(sParentMenu, sIndex) == pPopupMenu->m_hMenu)
{
// When popup is found, m_pParentMenu is containing menu.
sState.m_pParentMenu = CMenu::FromHandle(sParentMenu);
break;
}
}
}
}
sState.m_nIndexMax = pPopupMenu->GetMenuItemCount();
for (sState.m_nIndex = 0; sState.m_nIndex < sState.m_nIndexMax; ++sState.m_nIndex)
{
sState.m_nID = pPopupMenu->GetMenuItemID(sState.m_nIndex);
if (sState.m_nID == 0)
continue; // Menu separator or invalid cmd - ignore it.
ASSERT(sState.m_pOther == XPR_NULL);
ASSERT(sState.m_pMenu != XPR_NULL);
if (sState.m_nID == (xpr_uint_t)-1)
{
// Possibly a popup menu, route to first item of that popup.
sState.m_pSubMenu = pPopupMenu->GetSubMenu(sState.m_nIndex);
if (sState.m_pSubMenu == XPR_NULL ||
(sState.m_nID = sState.m_pSubMenu->GetMenuItemID(0)) == 0 ||
sState.m_nID == (xpr_uint_t)-1)
{
continue; // First item of popup can't be routed to.
}
sState.DoUpdate(this, XPR_TRUE); // 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.
sState.m_pSubMenu = XPR_NULL;
sState.DoUpdate(this, XPR_FALSE);
}
// Adjust for menu deletions and additions.
xpr_uint_t sCount = pPopupMenu->GetMenuItemCount();
if (sCount < sState.m_nIndexMax)
{
sState.m_nIndex -= (sState.m_nIndexMax - sCount);
while (sState.m_nIndex < sCount && pPopupMenu->GetMenuItemID(sState.m_nIndex) == sState.m_nID)
{
sState.m_nIndex++;
}
}
sState.m_nIndexMax = sCount;
}
}