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-
- PRODUCT : TURBO PASCAL NUMBER : 516
- VERSION : 4.0xx+
- OS : MS-DOS
- DATE : December 7, 1989 PAGE : 1/2
-
- TITLE : TURNING THE CURSOR ON AND OFF
-
-
-
-
- The following example routines are public domain programs that
- have been uploaded to our Forum on CompuServe. As a courtesy to
- our users that do not have immediate access to CompuServe,
- Technical Support distributes these routines free of charge.
-
- However, because these routines are public domain programs, not
- developed by Borland International, we are unable to provide any
- technical support or assistance using these routines. If you need
- assistance using these routines, or are experiencing
- difficulties, we recommend that you log onto CompuServe and
- request assistance from the Forum members that developed these
- routines.
-
- To turn the cursor on and off you must use BIOS interrupt $10.
- For more information on this interrupt, please refer to a DOS
- programmer's guide. Of course, manipulating the cursor can only
- be done in text mode and not graphics mode.
-
- The following procedure turns the cursor on and off in Turbo
- Pascal:
-
- procedure SetCursor(On: Boolean);
- var
- reg : Registers;
- begin
- if On then { Turn cursor on }
- if Mem[$0040:$0049] = 7 then
- reg.cx := $B0C { If monochrome monitor }
- else
- reg.cx := $607 { If color monitor }
- else { Turn cursor off }
- reg.cx := $2020;
- reg.bx := 0;
- reg.ax := $0100; { Set the interrupt function }
- Intr($10,reg); { Call the interrupt }
- end; { procedure SetCursor }
-
- This procedure was revised from the question and answer section
- in the Turbo Pascal Tutor and Turbo Pascal version 3.0 reference
- guide.
-
- PRODUCT : TURBO PASCAL NUMBER : 516
- VERSION : 4.0xx+
- OS : MS-DOS
- DATE : December 7, 1989 PAGE : 2/2
-
- TITLE : TURNING THE CURSOR ON AND OFF
-
-
-
-
- In the procedure you do not need to declare the type Registers
- because it is predefined for you in the DOS unit. Therefore, to
- use this procedure, your program must also use the DOS unit.
-