copy menubar item from one menu to another

[ElectroLund]

I have a menu created in my UIR file.  In the same UIR (or hypothetically another), I want to programmatically copy a menubar item to the other.

I'm not seeing a DuplicateMenuItem or similar function.  Am I missing something?  Surely there's a way to do this.

[richferrara · Accepted solution]

I don't see a function like that either.  The only way I can see to do it is to manually read the name and callback function pointer of the source item (GetMenuBarAttribute) and use them to create a new target item (NewMenuItem).

[ElectroLund]

Yeah, that's what I'll just have to do in this case.  I hadn't thought of the reading the menu item label and callback.  That's a nice solution, as I can continue creating the menu in the UIR but copy in code.

Only thing I can't find is how to read the icon of a menu item in order to copy it. There doesn't appear to be an attribute for attached images, probably because the IDE immediately encodes the image bitmap into the UIR.  Bummer.

[richferrara]

Perhaps ATTR_ITEM_BITMAP?

[ElectroLund]

Hmm, I'm getting negative bitmap ID numbers when calling:

GetMenuBarAttribute(mainMenu, menuItem, ATTR_ITEM_BITMAP, &image);

Other attributes of this menu item work, such as both ATTR_CALLBACK_FUNCTION_POINTER and ATTR_ITEM_NAME. As such, when I copy all of these to my new destination menu, I get the name of the item, its callback function, but no image.

There's a whole section in the help manual called "Using Bitmap Objects" but nothing there references menus specifically.

[LuisG]

I haven't looked into why ATTR_ITEM_BITMAP doesn't work, but would calling LoadMenuBar on the new panel, followed by removing all the menu items that you don't need, be a feasible solution?

[richferrara]

That could work.  Give it a try.

[ElectroLund]

I finally got around to working on this again.  I found the solution to my bitmap problem.  It was even easier than I realized.

It turns out that when a new menu is created, by default the ATTR_SHOW_IMAGES is disabled. So enabling that before checking for existence of a source menu bitmap then will show in the destination.