I have an application with a ribbon UI. In this UI a button exists with a menu attached to it. What I wish to do is access the menu from the button handler to dynamically add and remove menu items.
void
CMyScrollView::OnMenuButtonHandler ()
{
// TODO: Add your command handler code here
CMFCRibbonBar *pRibbon = ((CMDIFrameWndEx*)GetTopLevelFrame())GetRibbonBar()
// Control ID_BTN_EDIT_MENU
// This where I would like to isolate and vary menu contents
}
In the CMainFRame window create a handler for the AFX_WM_ON_BEFORE_SHOW_RIBBON_ITEM_MENU message (ON_REGISTERED_MESSAGE).
Check for the Id of the button. Remove all previous items and add the one, you want.
LRESULT CMainFrame::OnBeforeShowRibbonItemMenu(WPARAM,LPARAM lp)
{
CMFCRibbonBaseElement *pElement = reinterpret_cast<CMFCRibbonBaseElement*>(lp);
// Try to get our menu button
switch (pElement->GetID())
{
case ID_RIBBON_DROPDOWN_BUTTON:
{
CMFCRibbonButton *pButton = DYNAMIC_DOWNCAST(CMFCRibbonButton, pElement);
if (pButton)
{
// MY_LIST copntains members with the ID and the text: m_uiCmdId, m_strTitle
const MY_LIST &list = ....;
if (list.size()!=0)
{
pButton->RemoveAllSubItems();
for (it = list.begin(); it!=list.end(); ++it)
pButton->AddSubItem(new CSomeKindOfRibbonButton(it->m_uiCmdId, it->m_strTitle));
}
}
...
Related
I have CMFCPropertyGrid control to which I have added a Combobox property with CMFCPropertyGridProperty::AddOption():
foreach(auto i, list)
{
str.Format(_T("<%s> %s"), i.first, i.second);
pProp->AddOption(str);
}
Now I need to do some code when the user drops down the list in this CMFCPropertyGrid.
I would use CBN_DROPDOWN if it were a combobox control in dialog window (it has ID). But how can I do that in case of CMFCPropertyGrid?
For a combobox-style CMFCPropertyGridProperty, the framework calls the OnClickButton member when the user clicks the down-arrow button near the top-right of the control (which causes the dropdown list to appear).
So, create a class for your control (derived from CMFCPropertyGridProperty) and override the OnClickButton member to add the code you want to run. Here's an outline of what you could do:
class MyComboControl : public CMFCPropertyGridProperty
{
public:
// Constructor: add some options ...
MyComboControl(void) : CMFCPropertyGridProperty(L"Choice:", _variant_t(L""), L"Description Text") {
AllowEdit(FALSE);
for (int i = 0; i < 3; ++i) {
CString text;
text.Format(L"Option #%d", i);
AddOption(text.GetString());
if (i == 0) SetValue(text.GetString());
}
}
// Override to handle the dropdown activation ...
void OnClickButton(CPoint pt) override {
//... Add any pre-drop code here.
CMFCPropertyGridProperty::OnClickButton(pt); // Call base class
//... Add any post-drop code here
}
};
MFC will notify the parent window for property changes throught AFX_WM_PROPERTY_CHANGED
Sent to the owner of the property grid
control (CMFCPropertyGridCtrl) when the user changes the value of
the selected property.
BEGIN_MESSAGE_MAP(CMyDialog, CDialogEx)
ON_REGISTERED_MESSAGE(AFX_WM_PROPERTY_CHANGED, OnPropertyChanged)
END_MESSAGE_MAP()
afx_msg LRESULT CMyDialog::OnPropertyChanged(WPARAM wparam, LPARAM lparam)
{
if (!lparam)
return 0;
auto prop = reinterpret_cast<CMFCPropertyGridProperty*>(lparam);
if (prop != m_pProp)
{
auto str_variant = prop->GetValue();
CString str;
if(str_variant.vt == VT_BSTR)
str = CString(str_variant.bstrVal);
}
return 0;
}
If you have multiple control with the grid control, you want to declare pProp as a class member m_pProp so its value can be tested.
I am trying to make my own custom property grid. I have made the owner-draw ListBox. when we click on the dialog box it popup.
but not getting msg when I click on the list.
how to get it?
I am trying with this function but not getting any trigger here when we click on any item on Listbox.
BEGIN_MESSAGE_MAP(x_ListBox, CListBox)
ON_CONTROL_REFLECT(LBN_SELCHANGE, &x_ListBox::OnLbnSelchange)
END_MESSAGE_MAP()
void x_ListBox::OnLbnSelchange()
{
try
{
auto selIdx = GetCurSel();
ReleaseCapture();
GetParent()->DestroyWindow();
}
catch (CException* p)
{
p->Delete();
}
}
I need to send msg to the DialogBox current selected item. is there any way I can get msg from DialogBox when we select an item in ListBox. like ComboBox in the DialogBox m_com.GetLbText(xxx);
Sorry for the newbie question, but can anyone point me at sample code that illustrates the use of the CMFCMenuButton? The Microsoft help refers to "New Controls samples", but these samples seem to be in the Visual Studio 2008 "Feature Pack", and this refuses to install on my system since I'm running VS 2013 and don't have VS 2008. I haven't been able to find the samples as stand-alone code.
To be specific, I have a dialog bar in which I want a button labelled Save with drop-down options of Save All and Save Visible (with Save All the default). But any working code would at least get me started.
Declare data members:
CMFCMenuButton m_button_menu;
CMenu m_menu;
Also add the button's id to message map and data exchange:
BEGIN_MESSAGE_MAP(CMyDialog, CDialogEx)
ON_BN_CLICKED(IDC_MFCMENUBUTTON1, OnButtonMenu)
...
END_MESSAGE_MAP
void CMyDialog::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
DDX_Control(pDX, IDC_MFCMENUBUTTON1, m_button_menu);
}
Define:
BOOL CMyDialog::OnInitDialog()
{
CDialogEx::OnInitDialog();
//...
m_menu.LoadMenu(IDR_MENU1);
m_button_menu.m_hMenu = m_menu.GetSubMenu(0)->GetSafeHmenu();
return TRUE;
}
Where IDR_MENU1 is a regular menu bar and we get its first submenu. For example:
IDR_MENU1 MENU
BEGIN
POPUP "Dummy"
BEGIN
MENUITEM "&Item1", ID_FILE_ITEM1
MENUITEM "&Item2", ID_FILE_ITEM2
END
END
If button's drop-down arrow is clicked, a popup menu appears, menu result is passed to OnButtonMenu. If left side of button is clicked, then OnButtonMenu is called directly, without showing a popup menu.
void CMyDialog::OnButtonMenu()
{
CString str;
switch (m_button_menu.m_nMenuResult)
{
case ID_FILE_ITEM1:
str = L"first menu item clicked";
break;
case ID_FILE_ITEM2:
str = L"second menu item clicked";
break;
default:
str = L"Button click (popup menu did not appear, or menu ID is not handled)";
break;
}
MessageBox(str);
}
** When working with docking controls, dialog bars, etc. MFC may run its own subclass, I don't think DoDataExchange gets called. m_button_menu could be invalid. GetDlgItem can be used to find the correct pointer:
CMFCMenuButton* CMyDlgBar::GetButtonMenu()
{
CMFCMenuButton* pButton = &m_button_menu;
if (!IsWindow(pButton->m_hWnd))
pButton = (CMFCMenuButton*)GetDlgItem(IDC_MFCMENUBUTTON1);
return pButton;
}
Everywhere else we use GetButtonMenu() instead of m_button_menu. For example:
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
return -1;
//...
m_dlgbar.Create(...);
m_dlgbar.m_menu.LoadMenu(IDR_MENU1);
m_dlgbar.GetButtonMenu()->m_hMenu = m_dlgbar.m_menu.GetSubMenu(0)->GetSafeHmenu();
return 0;
}
void CMainFrame::OnButtonMenu()
{
CString str;
switch (GetButtonMenu()->m_nMenuResult)
...
}
What if the Drop-Down Arrow does not show?
Then read the answer here that explains the changes needed to your RC file.
firstly let me describe what I have:
scenario: CMFCMenuButton, loaded with a CMenu, in a dialog test: click on an item of the menuresult: the message map will get the ID of the CMFCMenuButton and not the ID of the menu
how to get the actual menu ID clicked: use CMFCMenuButton::m_nMenuResultThe idea is that I want to have menu items and buttons in this dialog, and there would be buttons that share IDs with the menu items.So in the handler that I've created for the menu button I can get that m_nMenuResult and send it to the dialog or do whatever I want, but that doesn't seem to be how the CMFCMenuButton should work. What is the correct way of doing it?
CodeHere follows an example on how you can reproduce this.
I've used ON_COMMAND_RANGE also with IDC_MFCMENUBUTTON1 just to reuse the code for the OnMenu function
void CRepositionDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_MFCMENUBUTTON1, m_cmfcMenuButton);
}
BEGIN_MESSAGE_MAP(CRepositionDlg, CDialog)
ON_COMMAND_RANGE(IDC_MFCMENUBUTTON1,IDC_MFCMENUBUTTON1,OnMenu)
ON_COMMAND_RANGE(IDC_MENU1, IDC_MENU11, OnMenu)
END_MESSAGE_MAP()
// CRepositionDlg message handlers
afx_msg void CRepositionDlg::OnMenu(UINT nID)
{
CString csMessage;
csMessage.Format(L"OnMenu(%d)",nID);
AfxMessageBox(csMessage);
if(nID == IDC_MFCMENUBUTTON1)
{
OnMenu(m_cmfcMenuButton.m_nMenuResult);
}
}
BOOL CRepositionDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// TODO: Add extra initialization here
CMenu* pMenu = new CMenu;
pMenu->CreatePopupMenu();
for(int i = IDC_MENU1; i <= IDC_MENU11; i++)
{
CString csMenu;
csMenu.Format(L"menu %d",i);
pMenu->AppendMenuW(MF_STRING,i,csMenu);
}
m_cmfcMenuButton.m_hMenu = pMenu->GetSafeHmenu();
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}
If you code a handler for BN_CLICKED for the menu button, it will respond with 0 for m_nMenuResult if the click is on the button, or, m_nMenuResult will contain the ID of the menu item selected. If that's not what you wanted, I think you're fighting against the way the button works. Your only other option would be to create your own class to represent a menu button and add the behavior you want.
Is there a way to create dynamic menu items in the menu bar of an MFC applications created with visual studio 2008 style with menus not ribbon, I have plugins that add their menus dynamically how can I add them to that menu??? I see
//this is the menubar that i want to update
CMFCMenuBar m_wndMenuBar;
At first you have to create a new submenu. It can be filled by hand or loaded from resources.
Then create a new menu button and attach submenu to it. After that update the menu bar. That's it.
CMenu menu;
if(menu.LoadMenu(IDR_MY_MENU))
{
m_wndMenuBar.InsertButton(CMFCToolBarMenuButton(0, menu, -1, _T("&MyMenu")), -1);
m_wndMenuBar.AdjustLayout();
m_wndMenuBar.AdjustSizeImmediate();
}
P.S. menu may be local because CMFCToolBarMenuButton constructor copy content from it.
You probably need to override:
CMDIFrameWndEx::OnShowPopupMenu(CMFCPopupMenu* pMenuPopup)
and put a placeholder menu item where you need a dynamic menu, then replace the placeholder menu item with your dynamic menu.
For an example look into the source code shipping with MFC:
afxframeimpl.cpp
BOOL CFrameImpl::OnShowPopupMenu(CMFCPopupMenu* pMenuPopup, CFrameWnd* /*pWndFrame*/)
The ideal way is probably to completely build a CMenu object, and then assign it to the menu bar: This makes the code almost compatible with the previous versions of VisualStudio.
Declare a pointer to an instance of CMenu in CMainFrame definition:
CMenu *m_pMainMenu
Set it to NULL in CMainFrame constructor:
m_pMainMenu = NULL;
In CMainFrame::OnCreate(), create an instance of CMenu assuming it was NULL before:
SAFE_DELETE(m_pMainMenu);
m_pMainMenu = new CMenu;
Modify it at will with:
pMainMenu->LoadMenu(),
pMainMenu->RemoveMenu(),
pMainMenu->AppendMenu(),
pMainMenu->InsertMenu(),
...
Finally, associate the menu toolbar with this new menu by using CreateFromMenu:
m_wndMenuBar.CreateFromMenu(m_pMainMenu->m_hMenu);
Don't forget to release m_pMainMenu in CMainFrame destructor to avoid leaks:
SAFE_DELETE(m_pMainMenu)
Note: This is a very handy and safe macro:
#define SAFE_DELETE(a) { if (a) { delete(a); a=NULL; } }
You can use UPDATE_COMMAND_UI in property view window.
Let's say, you put a 'Text Capture' menu with 'ID_TEXTCAPTURE', and then you want to change the menu with 'Stop Capture'.
-in message map
BEGIN_MESSAGE_MAP(CChildFrame, CMDIChildWndEx)
ON_WM_CREATE()
ON_UPDATE_COMMAND_UI(ID_TEXTCAPTURE, &CChildFrame::OnUpdateTextcapture)
END_MESSAGE_MAP()
-event handler
void CChildFrame::OnUpdateTextcapture(CCmdUI *pCmdUI)
{
if(pCmdUI->m_pMenu)
{
int pos;
CMenu* mmenu = pCmdUI->m_pMenu;
pos = FindMenuItem(mmenu, _T("Text Capture(&C)"));
if (pos > -1 && IsCapture == TRUE)
{
UINT id = mmenu->GetMenuItemID(pos);
//change menu text as 'Stop Capture'
mmenu->ModifyMenu(id, MF_BYCOMMAND, id, _T("Stop Capture(&S)"));
IsCapture = TRUE;
}
}
}
CChildFrame::FindMenuItem(CMenu* Menu, LPCTSTR MenuString)
{
ASSERT(Menu);
ASSERT(::IsMenu(Menu->GetSafeHmenu()));
int count = Menu->GetMenuItemCount();
for (int i = 0; i < count; i++)
{
CString str;
if (Menu->GetMenuString(i, str, MF_BYPOSITION) && str.Compare(MenuString) == 0)
return i;
}
return -1;
}