下拉菜单问题？

[yanglovexian]

在选下拉菜单的选项时，要在前面打钩，我用这句话
m_pMenu->CheckMenuItem(IDM_GRADE1, MF_BYCOMMAND | MF_CHECKED);
怎么没反应（是Wince的），想问各位高手是怎么回事？先谢了

[yanglovexian]

怎么没人回答我的问题，是不是给分太少了，还是太简单，我真的遇到了这样的问题，在线等

[findlogo1]

void CMyDlg::OnUpdateOpenFile(CCmdUI* pCmdUI)
{
pCmdUI->SetCheck(TRUE);
}

[ZENGWEISH]

多点代码

[yanglovexian]

谢谢

[yanglovexian]

我要用的是菜单的下拉列表前打钩，这样不行，请问还有没有别的方法

[huangtaoyuan]

你是在基于对话框的上面添加的菜单吧？
对话框没有ON_WM_INITMENUPOPUP()这个消息，所以你要添加这个消息才能处理。
函数体：
void CTestDlg::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;
}
}
这样再处理就可以了

[findlogo1]

http://support.microsoft.com/kb/242577/en-us

[yanglovexian]

谢谢，我已有菜单了，就是菜单的下拉列表，前面打不了对号，用
m_pMenu-> CheckMenuItem(IDM_GRADE1, MF_BYCOMMAND ¦ MF_CHECKED); 对好也出不来，不知为什么

[yanglovexian]

各位高手还有没有好的方法了，我试了很多方法都不行，谢谢了

[ddoeddoe]

给对应的菜单项添加UPDATE_COMMAND_UI，在消息处理函数里：

void CMyDlg::OnUpdateOpenFile(CCmdUI* pCmdUI)
{
pCmdUI-> SetCheck(TRUE);
}

[kingmax54212008]

up

[yanglovexian]

谢谢楼上几位，我试了，在Wince下不行，还是改变不了下拉菜单的对号，在VC下可以，还有没有别的办法