ON_COMMAND建立的菜单映射,如何在已选的项前面标记
RT 问题点数：0、回复次数：6Top
1 楼laiyiling（陌生人[MVP]）回复于 2004-10-04 11:20:17 得分 0
如何在已选的项前面标记?
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不是很明白啊！Top
2 楼anothervip（Never ending... ...）回复于 2004-10-04 11:30:35 得分 0
是打勾吗？
CMenu::CheckMenuItem()
CCmdUI::SetCheck()Top
3 楼huaboy408（Thinking...）回复于 2004-10-04 11:54:21 得分 0
响应ON_UPDATE_COMMAND_UI
然后
pCmdUI->SetCheck(TRUE);Top
4 楼zhjie374（zhjie374）回复于 2004-10-04 22:39:02 得分 0
我利用的是弹出菜单!
ON_UPDATE_COMMAND_UI建立映射以后,还是不能标记(打勾)!
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5 楼zxs0001（盛）回复于 2004-10-04 23:24:49 得分 0
这个弹出菜单是不是在对话框中弹出的呀，
如果是的话就会有这问题！把框架类的一些关于菜单操作的函数拷过去就行了。
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6 楼zxs0001（盛）回复于 2004-10-04 23:28:40 得分 0
如果是的话，具体可以这么做:
在.h文件中加入如下声明
void OnInitMenuPopup(CMenu *pPopupMenu, UINT nIndex,BOOL bSysMenu); //初始化系统菜单函数,以响应ON_UPDATE_COMMAND_UI
在.cpp文件的映射部分加入
ON_WM_INITMENUPOPUP() //响应菜单栏的ON_UPDATE_COMMAND_UI
再在.cpp文件中实现
void CYourDlg::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;
}
}
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