FILELIST$: Difference between revisions

Attention!! - This page is outdated and provided for reference and/or education only. (Return to historic Table of Contents)

Starting with QB64-PE v3.4.0 the functionality described here was superseded by _OPENFILEDIALOG$. Additionally since QB64-PE v3.11.0 _FILES$ can be used to read file names programmatically.

FILELIST$ Function Automatic Setup Version

This version of the FILELIST$ string Function can be set up as a separate Window or be positioned anywhere on program screens larger than 640 X 480. Two position parameters are added to place the top left corner position on a QB64 custom _NEWIMAGE screen. It can be used with ANY screen mode either as a separate window or combined with your program screen! Simply set the parameters to zero if you want to use it as a Window. It will completely restore your program after a file list is displayed. Like the original version, this setup can also be INCLUDEd as a library and supports all of the original file specifications listed on the FILELIST$ (function) page.

Function Window Screenshot

_TITLE "Demo of FILELIST$ Function by Ted Weissgerber 2010"
dst& = _NEWIMAGE(800, 600, 32) 'for console bitmap
SCREEN dst&

PAINT (799, 599), _RGB(180, 180, 180)
LINE (7, 15)-(648, 496), _RGB(0, 0, 80), BF

LOCATE 33, 10: PRINT "Do you want file display in a new window? (Y/N)"
DO: SLEEP: yesno$ = UCASE$(INKEY$): LOOP UNTIL yesno$ <> ""
IF yesno$ = "Y" THEN x% = 0: y% = 0 ELSE x% = 8: y% = 16 'set parameters

LOCATE 33, 10: INPUT "Enter a File Type extension(*.BMP, *.TXT, etc): ", spec$
spec$ = UCASE$(spec$)
IF LEN(spec$) = 0 THEN spec$ = "*.BMP"
'IF INSTR(spec$, "*.") = 0 THEN spec$ = "*." + spec$

'<<<<<<< If x% and y% parameters are 0, the display is in separate window.>>>>>>
filename$ = FILELIST$(spec$, x%, y%) '<<<<<<<< added display position parameters


LOCATE 35, 10: PRINT filename$, LFN$
SLEEP
'------------------------------------- END DEMO CODE -------------------------------

FUNCTION FILELIST$ (Spec$, xpos%, ypos%)
SHARED Path$, LFN$ 'values also accessable by program
REDIM LGFN$(25), SHFN$(25), Last$(25), DIR$(25), Paths$(25) '<<<< $DYNAMIC only
IF LEN(ENVIRON$("OS")) = 0 THEN EXIT FUNCTION 'DIR X cannot be used on Win 9X
f% = FREEFILE
IF xpos% + ypos% = 0 THEN '****************** Root path TITLE in separate window only
  SHELL _HIDE "CD > D0S-DATA.INF"
  OPEN "D0S-DATA.INF" FOR INPUT AS #f%
  LINE INPUT #f%, current$
  CLOSE #f%
END IF ' ******************************************** END TITLE(see _TITLE below)
Spec$ = UCASE$(LTRIM$(RTRIM$(Spec$)))
IF INSTR(Spec$, "/A:D") OR INSTR(Spec$, "/O:G") THEN
  DL$ = "DIR": BS$ = "\" 'directory searches only
ELSE: DL$ = SPACE$(3): BS$ = ""
END IF
mode& = _COPYIMAGE(0) 'save previous screen value to restore if files displayed.
' Get Specific file information if available
SHELL _HIDE "cmd /c dir " + Spec$ + " /X > D0S-DATA.INF" 'get data
Head$ = "      Short Name          Long Name                     Last Modified     "
tmp$ = " \ \  \          \   \                              \ \                  \"
OPEN "D0S-DATA.INF" FOR INPUT AS #f% 'read the data file
DO UNTIL EOF(f%)
  LINE INPUT #f%, line$
  IF INSTR(line$, ":\") THEN
    Path$ = MID$(line$, INSTR(line$, ":\") - 1)
    IF RIGHT$(Path$, 1) <> "\" THEN Path$ = Path$ + "\"
    setcode% = 0: filecode% = 0
  END IF
  IF LEN(line$) > 25 AND MID$(line$, 1, 1) <> " " THEN 'don't read other info
    IF format% = 0 THEN
      IF MID$(line$, 20, 1) = "M" OR INSTR(line$, "<") = 25 THEN
        Sst% = 40: Lst% = 53: Dst% = 26: format% = 1 ' XP
      ELSE: Sst% = 37: Lst% = 50: Dst% = 23: format% = 2 'VISTA
      END IF
    END IF
    IF LEN(line$) >= Lst% THEN filecode% = ASC(UCASE$(MID$(line$, Lst%, 1))) ELSE filecode% = 0
    D1R$ = MID$(line$, Dst%, 3) 'returns directories only with Spec$ = "/A:D" or "/O:G"
    IF D1R$ <> "DIR" THEN D1R$ = SPACE$(3) 'change if anything else
    IF D1R$ = DL$ AND filecode% >= setcode% THEN
      cnt% = cnt% + 1
      DIR$(cnt%) = D1R$: Paths$(cnt%) = Path$
      Last$(cnt%) = MID$(line$, 1, 20)
      IF MID$(line$, Sst%, 1) <> SPACE$(1) THEN
        SHFN$(cnt%) = MID$(line$, Sst%, INSTR(Sst%, line$, " ") - Sst%)
        LGFN$(cnt%) = MID$(line$, Lst%)
      ELSE: SHFN$(cnt%) = MID$(line$, Lst%): LGFN$(cnt%) = ""
      END IF
      IF LEN(Spec$) AND (Spec$ = UCASE$(SHFN$(cnt%)) OR Spec$ = UCASE$(LGFN$(cnt%))) THEN
        Spec$ = SHFN$(cnt%) + BS$: FILELIST$ = Spec$: LFN$ = LGFN$(cnt%) + BS$
        noshow = -1: GOSUB KILLdata ' verifies file exist query (no display)
      END IF
      IF page% > 0 THEN ' pages after first
        IF cnt% = 1 THEN GOSUB NewScreen
        COLOR 11: LOCATE , 3: PRINT USING tmp$; DIR$(cnt%); SHFN$(cnt%); LGFN$(cnt%); Last$(cnt%)
        IF DIR$(cnt%) = "DIR" AND LEFT$(SHFN$(cnt%), 1) = "." THEN SHFN$(cnt%) = "": LGFN$(cnt%) = ""
      ELSE 'first page = 0
        IF cnt% = 2 THEN 'only display to screen if 2 or more files are found
          FList& = _NEWIMAGE(640, 480, 256)
          IF xpos% + ypos% > 0 THEN ' user wants display on program screen
            Show& = _NEWIMAGE(640, 480, 256) '<<<<<< ONSCREEN program displays only
            _DEST FList&
          ELSE: SCREEN FList& ' <<<<<<<<< Separate Window
            _TITLE current$ '<<<<<<<<<<<<<<<<<<<<<<<<<<< TITLE optional
          END IF
          GOSUB NewScreen '<<<< update function's screen with Putimage(see notes)
          COLOR 11: LOCATE , 3: PRINT USING tmp$; DIR$(1); SHFN$(1); LGFN$(1); Last$(1)
          IF DIR$(1) = "DIR" AND LEFT$(SHFN$(1), 1) = "." THEN SHFN$(1) = "": LGFN$(1) = ""
        END IF
        IF cnt% > 1 THEN
          COLOR 11: LOCATE , 3: PRINT USING tmp$; DIR$(cnt%); SHFN$(cnt%); LGFN$(cnt%); Last$(cnt%)
          IF DIR$(cnt%) = "DIR" AND LEFT$(SHFN$(cnt%), 1) = "." THEN SHFN$(cnt%) = "": LGFN$(cnt%) = ""
        END IF
      END IF 'page%
      IF cnt% MOD 25 = 0 THEN 'each page holds 25 file names
        COLOR 14: LOCATE 28, 24: PRINT "Select file or click here for next.";
        GOSUB pickfile
        page% = page% + 1: cnt% = 0
        REDIM LGFN$(25), SHFN$(25), Last$(25), DIR$(25), Paths$(25) '<<<< $DYNAMIC only
      END IF 'mod  25
    END IF 'DIR = DL$
  END IF 'len line$ > 25
LOOP
CLOSE #f%
last = 1: total% = cnt% + (page% * 25)
IF total% = 0 THEN FILELIST$ = "": Spec$ = "": LFN$ = "": noshow = -1: GOSUB KILLdata: 'no files(no display)
IF total% = 1 THEN   'one file(no display)
  Spec$ = SHFN$(1) + BS$: FILELIST$ = Spec$: LFN$ = LGFN$(1) + BS$: noshow = -1: GOSUB KILLdata
END IF
IF DL$ = SPACE$(3) THEN
  COLOR 10: LOCATE 28, 65: PRINT total%; "Files"
ELSE: COLOR 10: LOCATE 28, 65: PRINT total%; "Folders"
END IF
COLOR 14: LOCATE 28, 24: PRINT "Select file or click here to Exit. ";
pickfile:
_DEST FList&
ShowPath$ = RIGHT$(Path$, 78)
COLOR 15: LOCATE 29, 41 - (LEN(ShowPath$) \ 2): PRINT ShowPath$;
GOSUB NewDisplay
DO: Key$ = UCASE$(INKEY$): _LIMIT 30
  DO WHILE _MOUSEINPUT
    Tcol% = ((_MOUSEX - xpos%) \ 8) + 1 'mouse column with Putimage offset
    Trow% = ((_MOUSEY - ypos%) \ 16) + 1 'mouse row with offset
    Pick = _MOUSEBUTTON(1) ' get left button selection click
  LOOP
  IF Trow% > 2 AND Trow% < cnt% + 3 AND Tcol% > 0 AND Tcol% < 80 THEN 'when mouse in area
    R% = Trow% - 2
    IF P% = 0 OR P% > cnt% + 3 THEN P% = R%
    IF P% = R% THEN
      COLOR 15: LOCATE R% + 2, 3: PRINT USING tmp$; DIR$(R%); SHFN$(R%); LGFN$(R%); Last$(R%)
    ELSE
      COLOR 11: LOCATE P% + 2, 3: PRINT USING tmp$; DIR$(P%); SHFN$(P%); LGFN$(P%); Last$(P%)
    END IF
    GOSUB NewDisplay
    P% = R%
    IF Pick THEN
      Spec$ = SHFN$(R%)
      IF LEN(Spec$) THEN
        COLOR 13: LOCATE R% + 2, 3: PRINT USING tmp$; DIR$(R%); SHFN$(R%); LGFN$(R%); Last$(R%)
        GOSUB NewDisplay
        Spec$ = Spec$ + BS$: FILELIST$ = Spec$: Path$ = Paths$(R%)
        IF LEN(LGFN$(R%)) THEN LFN$ = LGFN$(R%) + BS$ ELSE LFN$ = ""
        _DELAY 1.5: CLS: SCREEN mode&: GOSUB KILLdata 'exit if user selection
      END IF
    END IF 'len spec
  END IF 'pick
  IF LEN(Key$) THEN usercode% = ASC(Key$) ELSE usercode% = 0
  IF usercode% > setcode% THEN setcode% = usercode% 'user can press letter to jump to
  IF Pick AND Trow% > 27 THEN EXIT DO
LOOP UNTIL LEN(Key$)
_DELAY .4 'adjust delay for page scroll speed
DO: Key$ = INKEY$: LOOP UNTIL Key$ = ""
IF last = 0 THEN RETURN 'exit if file no more data
FILELIST$ = "": Spec$ = "": LFN$ = ""
CLS: SCREEN mode& 'resets program screen to previous condition
KILLdata:
CLOSE #f%: KILL "D0S-DATA.INF" 'kill D0S-DATA.INF file and exit
IF FList& < -1 THEN _FREEIMAGE FList&
IF Show& < -1 THEN _FREEIMAGE Show&
IF noshow = -1 AND mode& < -1 THEN _FREEIMAGE mode&
_AUTODISPLAY 'reset default settings
EXIT FUNCTION
RETURN
NewScreen: 'clear screen and set display format
LINE (0, 0)-(639, 499), 0, BF
COLOR 14: LOCATE 2, 3: PRINT Head$
LINE (4, 4)-(636, 476), 13, B: LINE (5, 5)-(635, 475), 13, B
GOSUB NewDisplay
RETURN
NewDisplay: 'show program or window displays
IF xpos% + ypos% > 0 THEN
  _PUTIMAGE , FList&, Show&
  _DEST 0: _PUTIMAGE (xpos%, ypos%), Show&: _DISPLAY
  _DEST FList&
ELSE: _DISPLAY
END IF
RETURN
END FUNCTION

NOTE: Refresh browser if full code is not displayed!

Updated for VISTA Screen format 8/20/2010 Added optional root path in _TITLE bar of windowed mode only 11/16/2010

NOTE: IF $STATIC Metacommand is required, change function Arrays to STATIC and ERASE them at start and every loop!

QB64 Programming References

Wiki Pages Main Page with Articles and Tutorials QB64 specific keywords (alphabetical) Original QBasic keywords (alphabetical) QB64 OpenGL keywords (alphabetical) Keywords by Usage Got a question about something? Frequently Asked Questions about QB64 QB64 Phoenix Edition Community Forum Links to other QBasic Sites: Pete's QBasic Forum Pete's QBasic Downloads

@@ Line 1: / Line 1: @@
+----
+----
+<center>'''{{Text|Attention!! - This page is outdated and provided for reference and/or education only.|red}}'''</center>
+<center>([[Historic Pages|Return to historic Table of Contents]])</center>
+----
+<center>Starting with '''QB64-PE v3.4.0''' the functionality described here was superseded by [[_OPENFILEDIALOG$]].</center>
+<center>Additionally since '''QB64-PE v3.11.0''' [[_FILES$]] can be used to read file names programmatically.</center>
+----
+----<br>
 <center>''' FILELIST$ Function Automatic Setup Version'''</center>
@@ Line 59: / Line 69: @@
    {{Cb|LINE INPUT (file statement)|LINE INPUT}} #f%, line$
    {{Cb|IF...THEN|IF}} {{Cb|INSTR}}(line$, ":\") {{Cb|THEN}}
-     Path$ = {{Cb|MID$}}(line$, {{Cb|INSTR}}(line$, ":\") - 1)
+     Path$ = {{Cb|MID$ (function)|MID$}}(line$, {{Cb|INSTR}}(line$, ":\") - 1)
      {{Cb|IF...THEN|IF}} {{Cb|RIGHT$}}(Path$, 1) <> "\" {{Cb|THEN}} Path$ = Path$ + "\"
      setcode% = 0: filecode% = 0
    {{Cb|END IF}}
-   {{Cb|IF...THEN|IF}} {{Cb|LEN}}(line$) > 25 {{Cb|AND (boolean)|AND}} {{Cb|MID$}}(line$, 1, 1) <> " " {{Cb|THEN}} 'don't read other info
+   {{Cb|IF...THEN|IF}} {{Cb|LEN}}(line$) > 25 {{Cb|AND (boolean)|AND}} {{Cb|MID$ (function)|MID$}}(line$, 1, 1) <> " " {{Cb|THEN}} 'don't read other info
      {{Cb|IF...THEN|IF}} format% = 0 {{Cb|THEN}}
-       {{Cb|IF...THEN|IF}} {{Cb|MID$}}(line$, 20, 1) = "M" {{Cb|OR (boolean)|OR}} {{Cb|INSTR}}(line$, "<") = 25 {{Cb|THEN}}
+       {{Cb|IF...THEN|IF}} {{Cb|MID$ (function)|MID$}}(line$, 20, 1) = "M" {{Cb|OR (boolean)|OR}} {{Cb|INSTR}}(line$, "<") = 25 {{Cb|THEN}}
          Sst% = 40: Lst% = 53: Dst% = 26: format% = 1 ' XP
        {{Cb|ELSE}}: Sst% = 37: Lst% = 50: Dst% = 23: format% = 2 'VISTA
        {{Cb|END IF}}
      {{Cb|END IF}}
-     {{Cb|IF...THEN|IF}} {{Cb|LEN}}(line$) >= Lst% {{Cb|THEN}} filecode% = {{Cb|ASC}}({{Cb|UCASE$}}({{Cb|MID$}}(line$, Lst%, 1))) {{Cb|ELSE}} filecode% = 0
+     {{Cb|IF...THEN|IF}} {{Cb|LEN}}(line$) >= Lst% {{Cb|THEN}} filecode% = {{Cb|ASC (function)|ASC}}({{Cb|UCASE$}}({{Cb|MID$ (function)|MID$}}(line$, Lst%, 1))) {{Cb|ELSE}} filecode% = 0
-     D1R$ = {{Cb|MID$}}(line$, Dst%, 3) 'returns directories only with Spec$ = "/A:D" or "/O:G"
+     D1R$ = {{Cb|MID$ (function)|MID$}}(line$, Dst%, 3) 'returns directories only with Spec$ = "/A:D" or "/O:G"
      {{Cb|IF...THEN|IF}} D1R$ <> "DIR" {{Cb|THEN}} D1R$ = {{Cb|SPACE$}}(3) 'change if anything else
      {{Cb|IF...THEN|IF}} D1R$ = DL$ {{Cb|AND (boolean)|AND}} filecode% >= setcode% {{Cb|THEN}}
        cnt% = cnt% + 1
        DIR$(cnt%) = D1R$: Paths$(cnt%) = Path$
-       Last$(cnt%) = {{Cb|MID$}}(line$, 1, 20)
+       Last$(cnt%) = {{Cb|MID$ (function)|MID$}}(line$, 1, 20)
-       {{Cb|IF...THEN|IF}} {{Cb|MID$}}(line$, Sst%, 1) <> {{Cb|SPACE$}}(1) {{Cb|THEN}}
+       {{Cb|IF...THEN|IF}} {{Cb|MID$ (function)|MID$}}(line$, Sst%, 1) <> {{Cb|SPACE$}}(1) {{Cb|THEN}}
-         SHFN$(cnt%) = {{Cb|MID$}}(line$, Sst%, {{Cb|INSTR}}(Sst%, line$, " ") - Sst%)
+         SHFN$(cnt%) = {{Cb|MID$ (function)|MID$}}(line$, Sst%, {{Cb|INSTR}}(Sst%, line$, " ") - Sst%)
-         LGFN$(cnt%) = {{Cb|MID$}}(line$, Lst%)
+         LGFN$(cnt%) = {{Cb|MID$ (function)|MID$}}(line$, Lst%)
-       {{Cb|ELSE}}: SHFN$(cnt%) = {{Cb|MID$}}(line$, Lst%): LGFN$(cnt%) = ""
+       {{Cb|ELSE}}: SHFN$(cnt%) = {{Cb|MID$ (function)|MID$}}(line$, Lst%): LGFN$(cnt%) = ""
        {{Cb|END IF}}
        {{Cb|IF...THEN|IF}} {{Cb|LEN}}(Spec$) {{Cb|AND (boolean)|AND}} (Spec$ = {{Cb|UCASE$}}(SHFN$(cnt%)) {{Cb|OR (boolean)|OR}} Spec$ = {{Cb|UCASE$}}(LGFN$(cnt%))) {{Cb|THEN}}
@@ Line 160: / Line 170: @@
      {{Cb|END IF}} 'len spec
    {{Cb|END IF}} 'pick
-   {{Cb|IF...THEN|IF}} {{Cb|LEN}}(Key$) {{Cb|THEN}} usercode% = {{Cb|ASC}}(Key$) {{Cb|ELSE}} usercode% = 0
+   {{Cb|IF...THEN|IF}} {{Cb|LEN}}(Key$) {{Cb|THEN}} usercode% = {{Cb|ASC (function)|ASC}}(Key$) {{Cb|ELSE}} usercode% = 0
    {{Cb|IF...THEN|IF}} usercode% > setcode% {{Cb|THEN}} setcode% = usercode% 'user can press letter to jump to
    {{Cb|IF...THEN|IF}} Pick {{Cb|AND (boolean)|AND}} Trow% > 27 {{Cb|THEN}} {{Cb|EXIT DO}}
@@ Line 205: / Line 215: @@
 {{PageSeeAlso}}
+* [[_OPENFILEDIALOG$]], [[_FILES$]]
 * [[FILELIST$ (function)|Return to original FILELIST$ function]]
-{{PageNavigation}}
+{{PageReferences}}

Latest revision as of 13:28, 19 November 2024

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FILELIST$: Difference between revisions

Latest revision as of 13:28, 19 November 2024

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QB64 Programming References

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