BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  using menus several times          BorlandTalk.com Forum Index -> C++ Builder (VCL Components Usage) View previous topic :: View next topic   Author Message Martin Guest Posted: Wed Jun 15, 2005 10:17 am    Post subject: using menus several times Hello, I am using a number of menus that shall appear as submenus in a main menu and also as a popup menu for certain components. Now I want to avoid to have all these menus double because their captions have all to be set at runtime depending on the selected language. So I built up the main menu as a normal component (TMainMenu) and wanted to load one popup menu (TPopupMenu) at runtime with the menuitems depending on the component right-clicked. Like this: for (k = 0; k < Main_submenu->Count; k++) PopupMenu1->Items->Add (Main_submenu->Items [k]); It compiles, but the first time Add () is called I get an exception EMenuError "Menu added two times" (I translated this back to english) Is it possible at all what I want and how can I get it running? Thank you very much for help Martin Back to top Pete Fraser Guest Posted: Wed Jun 15, 2005 11:03 am    Post subject: Re: using menus several times You are adding the same MenuItem onto different menus which is not allowed. You need to create a new MenuItem instance and copy data from MainMenu onto it and then add it to the PopupMenu1. HTH Pete "Martin" <anonymous (AT) anonym (DOT) net> wrote Quote: Hello, I am using a number of menus that shall appear as submenus in a main menu and also as a popup menu for certain components. Now I want to avoid to have all these menus double because their captions have all to be set at runtime depending on the selected language. So I built up the main menu as a normal component (TMainMenu) and wanted to load one popup menu (TPopupMenu) at runtime with the menuitems depending on the component right-clicked. Like this: for (k = 0; k < Main_submenu->Count; k++) PopupMenu1->Items->Add (Main_submenu->Items [k]); It compiles, but the first time Add () is called I get an exception EMenuError "Menu added two times" (I translated this back to english) Is it possible at all what I want and how can I get it running? Thank you very much for help Martin Back to top Martin Guest Posted: Wed Jun 15, 2005 4:58 pm    Post subject: Re: using menus several times Hello, thank you for your help. It works like you said. To be sure I would like to ask another question on this topic. Now in the event handler OnPopup I first remove all items from the popup menu with PopupMenu1->Items->Clear (); and then in a loop dynamically create new items (with new) and add them to the menu. Is it enough to just use Clear () to also completely remove the dynamically created items from memory or do I need a corresponding delete for every new I used? Thank you again Martin Quote: You are adding the same MenuItem onto different menus which is not allowed. You need to create a new MenuItem instance and copy data from MainMenu onto it and then add it to the PopupMenu1. HTH Pete "Martin" <anonymous (AT) anonym (DOT) net> wrote in message news:42affffd (AT) newsgroups (DOT) borland.com... Hello, I am using a number of menus that shall appear as submenus in a main menu and also as a popup menu for certain components. Now I want to avoid to have all these menus double because their captions have all to be set at runtime depending on the selected language. So I built up the main menu as a normal component (TMainMenu) and wanted to load one popup menu (TPopupMenu) at runtime with the menuitems depending on the component right-clicked. Like this: for (k = 0; k < Main_submenu->Count; k++) PopupMenu1->Items->Add (Main_submenu->Items [k]); It compiles, but the first time Add () is called I get an exception EMenuError "Menu added two times" (I translated this back to english) Is it possible at all what I want and how can I get it running? Thank you very much for help Martin Back to top Pete Fraser Guest Posted: Wed Jun 15, 2005 5:06 pm    Post subject: Re: using menus several times Yes, clear() by itself is OK as all menu items are owned by the parent menu and thus deleted by it. The same is true for Forms etc. HTH Pete "Martin" <anonymous (AT) anonym (DOT) net> wrote Quote: Hello, thank you for your help. It works like you said. To be sure I would like to ask another question on this topic. Now in the event handler OnPopup I first remove all items from the popup menu with PopupMenu1->Items->Clear (); and then in a loop dynamically create new items (with new) and add them to the menu. Is it enough to just use Clear () to also completely remove the dynamically created items from memory or do I need a corresponding delete for every new I used? Thank you again Martin You are adding the same MenuItem onto different menus which is not allowed. You need to create a new MenuItem instance and copy data from MainMenu onto it and then add it to the PopupMenu1. HTH Pete "Martin" <anonymous (AT) anonym (DOT) net> wrote in message news:42affffd (AT) newsgroups (DOT) borland.com... Hello, I am using a number of menus that shall appear as submenus in a main menu and also as a popup menu for certain components. Now I want to avoid to have all these menus double because their captions have all to be set at runtime depending on the selected language. So I built up the main menu as a normal component (TMainMenu) and wanted to load one popup menu (TPopupMenu) at runtime with the menuitems depending on the component right-clicked. Like this: for (k = 0; k < Main_submenu->Count; k++) PopupMenu1->Items->Add (Main_submenu->Items [k]); It compiles, but the first time Add () is called I get an exception EMenuError "Menu added two times" (I translated this back to english) Is it possible at all what I want and how can I get it running? Thank you very much for help Martin Back to top Martin Guest Posted: Wed Jun 15, 2005 7:17 pm    Post subject: Re: using menus several times Hello Pete, Thank you very much Martin Quote: Yes, clear() by itself is OK as all menu items are owned by the parent menu and thus deleted by it. The same is true for Forms etc. HTH Pete "Martin" <anonymous (AT) anonym (DOT) net> wrote in message news:42b05dd9 (AT) newsgroups (DOT) borland.com... Hello, thank you for your help. It works like you said. To be sure I would like to ask another question on this topic. Now in the event handler OnPopup I first remove all items from the popup menu with PopupMenu1->Items->Clear (); and then in a loop dynamically create new items (with new) and add them to the menu. Is it enough to just use Clear () to also completely remove the dynamically created items from memory or do I need a corresponding delete for every new I used? Thank you again Martin You are adding the same MenuItem onto different menus which is not allowed. You need to create a new MenuItem instance and copy data from MainMenu onto it and then add it to the PopupMenu1. HTH Pete "Martin" <anonymous (AT) anonym (DOT) net> wrote in message news:42affffd (AT) newsgroups (DOT) borland.com... Hello, I am using a number of menus that shall appear as submenus in a main menu and also as a popup menu for certain components. Now I want to avoid to have all these menus double because their captions have all to be set at runtime depending on the selected language. So I built up the main menu as a normal component (TMainMenu) and wanted to load one popup menu (TPopupMenu) at runtime with the menuitems depending on the component right-clicked. Like this: for (k = 0; k < Main_submenu->Count; k++) PopupMenu1->Items->Add (Main_submenu->Items [k]); It compiles, but the first time Add () is called I get an exception EMenuError "Menu added two times" (I translated this back to english) Is it possible at all what I want and how can I get it running? 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