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QuestionMFC, Cannot disable Menu option from Child View Pin
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AnswerRe: MFC, Cannot disable Menu option from Child View Pin
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GeneralRe: MFC, Cannot disable Menu option from Child View Pin
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AnswerRe: MFC, Cannot disable Menu option from Child View Pin
Jochen Arndt11-Jan-16 21:30
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Member 11203277 wrote:
In the child window i can successfully do a MouseRight click and popup of some menu with its submenus from the main menu bar.

So you are using a popup (context) menu here and not the menu of the main frame (only the menu items / resources are re-used).

Then you should handle enabling/disabling when opening the popup menu and pass AfxGetMainWnd() as the owner window (see code comments):
CMenu *pMenu = new CMenu;
pMenu->LoadMenu(IDR_OF_MENU);
// Get the pop-up menu.
CMenu *pPopupMenu = pMenu->GetSubMenu(0);
// Enable disable an item by ID.
pPopupMenu->EnableMenuItem(CM_VIEW_OPTION1, CMViewOption1Enabled ? 0 : MF_GRAYED);
// Show context menu and wait for selection.
// Advantages of passing AfxGetMainWnd():
//  - Calls provided OnUpdate() functions to determine state of items.
//    NOTE: Items can be only disabled using the OnUpdate handlers!
//    So there must be handlers for those items that may be disabled!
//    If no update handlers are present, items are enabled by default
//     (by existance of command handlers).
//  - Shows short info about items in status bar
//  - Processes F1 help
pPopupMenu->TrackPopupMenuEx(flags, x, y, AfxGetMainWnd(), NULL);
delete pMenu;

A dynamic update is not necessary here when the popup menu closes with the first click. Otherwise make pPopupMenu a member of your child view so that it can be used to change items and/or their state dynamically.
GeneralRe: MFC, Cannot disable Menu option from Child View Pin
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QuestionHow to change a alignment of CStatic Label at run time? Pin
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