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- ' *** CHR_EX.BAS ***
- '
- DEFINT A-Z
- ' Display two double-sided boxes.
- CALL DBox(5,22,18,40)
- CALL DBox(1,4,4,50)
- END
-
- ' Subroutine to display boxes.
- ' Parameters:
- ' Urow%, Ucol% : Row and column of upper-left corner.
- ' Lrow%, Lcol% : Row and column of lower-right corner.
- ' Constants for extended ASCII graphic characters.
- CONST ULEFTC=201, URIGHTC=187, VERTICAL=186, HORIZONTAL=205
- CONST LLEFTC=200, LRIGHTC=188
-
- SUB DBox (Urow%, Ucol%, Lrow%, Lcol%) STATIC
- ' Draw top of box.
- LOCATE Urow%, Ucol% : PRINT CHR$(ULEFTC);
- LOCATE ,Ucol%+1 : PRINT STRING$(Lcol%-Ucol%,CHR$(HORIZONTAL));
- LOCATE ,Lcol% : PRINT CHR$(URIGHTC);
- ' Draw body of box.
- FOR I=Urow%+1 TO Lrow%-1
- LOCATE I,Ucol% : PRINT CHR$(VERTICAL);
- LOCATE ,Lcol% : PRINT CHR$(VERTICAL);
- NEXT I
- ' Draw bottom of box.
- LOCATE Lrow%, Ucol% : PRINT CHR$(LLEFTC);
- LOCATE ,Ucol%+1 : PRINT STRING$(Lcol%-Ucol%,CHR$(HORIZONTAL));
- LOCATE ,Lcol% : PRINT CHR$(LRIGHTC);
- END SUB