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Referencing User Interface Objects Programmatically

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Updated2023-02-21
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When building a GUI programmatically, reference objects and assign callbacks as shown in the following table.

Note When building a GUI in the User Interface Editor, you reference objects and callbacks differently.

User Interface Object	How to Reference the Object	How to Assign a Callback to the Object
Panel	Use the handle returned by one of the following functions: NewPanel LoadPanel LoadPanelEx DuplicatePanel DuplicatePanelTree GetActivePanel GetSharedMenuBarEventPanel GetCtrlArrayPanel GetPanelHandleFromTabPage GetActiveXCtrlFromObjHandle GetGlobalMouseState GetUserEvent	Call InstallPanelCallback.
Control	Use the ID returned by one of the following functions: NewCtrl DuplicateCtrl GetActiveCtrl GetCtrlArrayItem NewActiveXCtrl NewActiveXCtrlFromFile GetActiveXCtrlFromObjHandle GetUserEvent	Call InstallCtrlCallback.
Menu bar	Use the handle returned by one of the following functions: NewMenuBar LoadMenuBar LoadMenuBarEx NewMenuBar GetPanelMenuBar GetUserEvent	Call InstallMenuCallback.
Menu	Use the ID returned by NewMenu.	Call InstallMenuCallback.
Submenu	Use the ID returned by NewSubMenu.	Call InstallMenuCallback.
Menu item	Use the ID returned by one of the following functions: NewMenuItem RunPopupMenu InsertSeparator NewCtrlMenuItem NewCtrlMenuSeparator ShowBuiltInCtrlMenuItem GetUserEvent	Call InstallMenuCallback.

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