Texas Instruments TI89 Developer Guide - Page 1209
WinOpen, WinBackupToScr, FALSE. When
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Appendix A: System Routines - Windows 1167 WinDupStat Declaration: BOOL WinDupStat (WINDOW * w, BOOL Stat) Category(ies): Windows Description: Turn the duplicate status on (Stat = TRUE) or off (Stat = FALSE). When the duplicate status is turned off, all writes to a window go only to the screen. When turned on, all writes go to both the screen and the backup window. This only applies to windows created with the WF_DUP_SCR flag set. Inputs: w - WINDOW struct of a previously opened window. Stat - TRUE to turn duplicate writes on, FALSE to turn them off. Outputs: If WF_DUP_SCR is set then returns the old status. Assumptions: The WINDOW w was opened with the WF_DUP_SCR flag. Side Effects: Duplicate writes slow down all writes to windows with WF_DUP_SCR set. Availability: All versions of the TI-89 / TI-92 Plus. TI-89 / TI-92 Plus Differences: None See Also: WinOpen, WinBackupToScr Example: WINDOW w; if (WinOpen(&w, MakeWinRect(10,10,90,80), WF_DUP_SCR|WF_TTY )) { WinActivate( &w ); WinStr( &w, "THIS IS DUPLICATED\n" ); /* written to screen & backup */ WinEllipse( &w, 40,40,20,20 ); /* ditto */ WinDupStat( &w, FALSE ); WinStr( &w, "THIS GOES ONLY TO THE SCREEN"); /* does not go to backup */ ngetchx(); WinBackupToScr( &w ); /* last WinStr text will be gone */ ngetchx(); WinClose( &w ); } TI-89 / TI-92 Plus Developer Guide Not for Distribution Beta Version January 26, 2001
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