File_ListFile() | TFT & EPD Graphic Library 2

Syntax

File_ListFile(), String * 13

File_ListFile(), String * 12

Result String = file name

0 = end of list

String * 12 = file name

File_ListFile() is a command used to retrieve the name of a file currently being processed in a sequential list of files.

This is part of a system that allows you to loop through the files in the current folder (directory), listing their names one by one.

File_ListFile()

File_ListFile() is used to get the name of the file at the current position in the list. After each call, the internal counter is incremented, which moves to the next file in the list.
It returns a string with the file name. If there are no more files to list, it returns 0, signaling the end of the list.

End of List: When there are no more files to list, File_ListFile() will return 0.
File Names: File names are returned in the order they appear in the FAT table (the file system's allocation table).
File List Reset: You must call File_ListReset() before using File_ListFile() to ensure that you begin from the start of the file list.

TftSetUp(0, 0) 'Set screen

TftResetScreen(BLACK) 'Reset screen

TftSetSndFont(0,0) 'Set Font0

While File_Init() <> cErrOK : Wend 'Initialize SD Card

TftPrintSndString("Sd Initialization OK",1,0,0,1,GREEN,BLACK,0) 'Confirm Initialize SD Card

bCounter = 27 'Vertical print counter

File_ListReset() 'Reset file/folder counter

Clear sString

sString = File_ListDir() 'Loop through folder names

If sString = 0 Then Break 'Break if end of list

TftPrintSndString(sString,1,0,bCounter,1,GREEN,BLACK,0) 'Print folder name

Dec bCounter 'Move to next print line

Loop