SAM_Close is sent to a dialog box, a form window, MDI window, or a top-level table window when you choose the Close command from a window's system menu or when you double-click on the window's system menu. SAM_Close is sent to an application to notify the application that you are attempting to close a window. By processing the SAM_Close message, an application can check the form window or table window to see if there is data that needs to be saved to the data source. A SAM_Close message is not sent on a call to SalQuit, SalEndDialog, or SalDestroyWindow. If SAM_Close is sent to the Message Actions section of a modal or system modal dialog box, the application can call SalMessageBox to prevent the destruction of the dialog box. Otherwise, default processing closes the message box. If SAM_Close does not execute a return, the window closes; if SAM_Close returns FALSE, the window does not close. Message Variables hWndForm Window handle of the current top-level window. hWn

public const int SAM_Close