Main sections
CLOSEFILE
CLOSEFILE channel%
Closes a file that has been opened with the OPENFILE command. Files must be closed once your program has finished using them so that they can be accessed from other programs or GLBasic.
Example
// Files
test$ = "test.bin"
OPENFILE(1, test$, FALSE)
WRITEBYTE 1, 42
WRITEBYTE 1, -42
WRITEWORD 1, 16767
WRITEWORD 1, -16767
WRITEIEEE 1, 1.234E-4
xx$= "Hello World\nYes, Hello\n"
WRITESTR 1, xx$
WRITELONG 1, 16767
WRITELONG 1, -16767
CLOSEFILE 1
LOCAL b1%, b2%, w1%, w2%, l1%, l2%, ieee
LOCAL x2$, _x1$, _x2$
OPENFILE(1, test$, TRUE)
READBYTE 1, b1
READBYTE 1, b2
READWORD 1, w1
READWORD 1, w2
READIEEE 1, ieee
// READSTR 1, x2$, LEN(xx$)
READLINE 1, _x1$
READLINE 1, _x2$
READLONG 1, l1
READLONG 1, l2
CLOSEFILE 1
LOCAL i%
PRINT "b1="+b1, 0,i); INC(i, 10);
PRINT "b2="+b2, 0,i); INC(i, 10);
PRINT "w1="+w1, 0,i); INC(i, 10);
PRINT "w2="+w2, 0,i); INC(i, 10);
PRINT "ie="+ieee, 0,i); INC(i, 10);
PRINT "st="+_x1 + "-" + _x2, 0,i); INC(i, 10);
PRINT "l1="+l1, 0,i); INC(i, 10);
PRINT "l2="+l2, 0,i); INC(i, 10);
SHOWSCREEN
MOUSEWAIT
OPENFILE(1, "test.txt", FALSE)
WRITELONG 1, 1234
WRITELONG 1, 5678
WRITELONG 1, 9911
CLOSEFILE 1
LOCAL i
// 1234
OPENFILE(1, "test.txt", TRUE)
DEBUG "pos(0)="+FILEPOSITION(1)+"\n"
READLONG 1,i%; DEBUG "read="+i+"\n"
// 1234
FILESEEK(1, 0, 0)
DEBUG "pos(0)="+FILEPOSITION(1)+"\n"
READLONG 1,i%; DEBUG "read="+i+"\n"
// 1234
FILESEEK(1, -4, 1)
DEBUG "pos(0)="+FILEPOSITION(1)+"\n"
READLONG 1,i%; DEBUG "read="+i+"\n"
// 1234
FILESEEK(1, -12, -1)
DEBUG "pos(0)="+FILEPOSITION(1)+"\n"
READLONG 1,i%; DEBUG "read="+i+"\n"
// 9911
FILESEEK(1, 4, 1)
DEBUG "pos(0)="+FILEPOSITION(1)+"\n"
READLONG 1,i%; DEBUG "read="+i+"\n"
CLOSEFILE 1