MUI's list class is very powerful. It handles all types
of entries, from a simple string to a complicated structure
with many associated resources. Multi column lists are
also supported, the format for a column is adjustable.
Lists support any kind of sorting, multi selection and
an active entry that can be controlled with the mouse
or the cursor keys.
Note: A list object alone doesn't make much sense, you
should always use it as child of a listview object.
This one attaches a scrollbar and handles all user
input.
Attribute Ver ISG Type
----------------------------------- --- --- --------------------
MUIA_List_Active V4 ISG LONG
MUIA_List_AdjustHeight V4 I.. BOOL
MUIA_List_AdjustWidth V4 I.. BOOL
MUIA_List_AutoVisible V11 ISG BOOL
MUIA_List_CompareHook V4 IS. struct Hook *
MUIA_List_ConstructHook V4 IS. struct Hook *
MUIA_List_DestructHook V4 IS. struct Hook *
MUIA_List_DisplayHook V4 IS. struct Hook *
MUIA_List_DragSortable V11 ISG BOOL
MUIA_List_DropMark V11 ..G LONG
MUIA_List_Entries V4 ..G LONG
MUIA_List_First V4 ..G LONG
MUIA_List_Format V4 ISG STRPTR
MUIA_List_InsertPosition V9 ..G LONG
MUIA_List_MinLineHeight V4 I.. LONG
MUIA_List_MultiTestHook V4 IS. struct Hook *
MUIA_List_Pool V13 I.. APTR
MUIA_List_PoolPuddleSize V13 I.. ULONG
MUIA_List_PoolThreshSize V13 I.. ULONG
MUIA_List_Quiet V4 .S. BOOL
MUIA_List_ShowDropMarks V11 ISG BOOL
MUIA_List_SourceArray V4 I.. APTR
MUIA_List_Title V6 ISG char *
MUIA_List_Visible V4 ..G LONG
Method Ver
----------------------------------- ---
MUIM_List_Clear V4
MUIM_List_CreateImage V11
MUIM_List_DeleteImage V11
MUIM_List_Exchange V4
MUIM_List_GetEntry V4
MUIM_List_Insert V4
MUIM_List_InsertSingle V7
MUIM_List_Jump V4
MUIM_List_Move V9
MUIM_List_NextSelected V6
MUIM_List_Redraw V4
MUIM_List_Remove V4
MUIM_List_Select V4
MUIM_List_Sort V4
MUIM_List_TestPos V11
NAME
MUIA_List_Active -- (V4 ) [ISG], LONG
SPECIAL INPUTS
MUIV_List_Active_Off
MUIV_List_Active_Top
MUIV_List_Active_Bottom
MUIV_List_Active_Up
MUIV_List_Active_Down
MUIV_List_Active_PageUp
MUIV_List_Active_PageDown
FUNCTION
Reading this attribute will return the number of
the active entry (the one with the cursor on it).
The result is between 0 and MUIA_List_Entries-1
or MUIV_List_Active_Off, in which case there is
currently no active entry.
Setting the attribute will cause the list to
move the cursor to the new position and scroll
this position into the visible area.
SEE ALSO
MUIA_List_Entries, MUIA_List_First, MUIA_List_Visible
NAME
MUIA_List_AdjustHeight -- (V4 ) [I..], BOOL
FUNCTION
A list with MUIA_List_AdjustHeight set to true is exactly
as high as all of its entries and not resizable. This is
only possible when the list is filled *before* the window
is opened.
SEE ALSO
MUIA_List_AdjustWidth
NAME
MUIA_List_AdjustWidth -- (V4 ) [I..], BOOL
FUNCTION
A list with MUIA_List_AdjustWidth set to true is exactly
as wide as the widest entry and not resizable. This is
only possible when the list is filled *before* the window
is opened.
SEE ALSO
MUIA_List_AdjustHeight
NAME
MUIA_List_AutoVisible -- (V11) [ISG], BOOL
FUNCTION
Set this to make your lists automatically jump to the
active entry when they are displayed.
SEE ALSO
MUIA_List_Active
NAME
MUIA_List_CompareHook -- (V4 ) [IS.], struct Hook *
FUNCTION
If you plan to have the entries of your list sorted
(either by inserting them sorted or by using the
MUIM_List_Sort method) and if the entries of your
list are not simple strings, you *must* supply
a compare hook.
This hook will be called with one list element in A1
and another one in A2. You should return something like
<0 e1 < e2
0 e1 == e2
>0 e1 > e2
EXAMPLE
/* the builtin string compare function */
LONG __asm cmpfunc(_a1 char *s1,_a2 char *s2)
{
return(stricmp(s1,s2));
}
SEE ALSO
MUIA_List_ConstructHook, MUIA_List_DestructHook
NAME
MUIA_List_ConstructHook -- (V4 ) [IS.], struct Hook *
SPECIAL INPUTS
MUIV_List_ConstructHook_String
FUNCTION
The construct hook is called whenever you add an
entry to your list. MUI will not insert the given
pointer directly, but instead call the construct
hook and add its result code.
Imagine you want to display a list of entries
in a directory. You could step through it
using Examine()/ExNext() and directly use the
MUIM_List_Insert method on your file info block
buffer.
Your construct hook will be called with this
file info block as parameter, makes a copy of
it and returns the address of that copy. Thats
what is actually added to the list.
The corresponding destruct hook is called whenever
an entry shall be removed. It's task would simply be
to free the memory and maybe other resources concering
this entry that were allocated by the construct hook.
Using these two functions, you will never have to
worry about freeing the memory used by your list
entries. Clearing the list or disposing the list
object will automatically remove all entries and
thus free the associated resources.
The construct hook will be called with the hook
in A0, the data given to MUIM_List_Insert as message
in register A1 and with pointer to a standard kick 3.x
memory pool in A2. If you want, you can use the exec
or amiga.lib functions for allocating memory within
this pool, but this is only an option.
If the construct hook returns NULL, nothing will be
added to the list.
There is a builtin construct hook available called
MUIV_List_ConstructHook_String. This expects that
you only add strings to your list and will make
a local copy of this string to allow you destroying
the original. Of course you *must* also use
MUIV_List_DestructHook_String in this case.
Without construct and destruct hooks, you are responsible
for allocating and freeing entries yourself.
EXAMPLE
/* the builtin string construct and destruct functions: */
APTR __asm consfunc(_a2 APTR pool,_a1 char *str)
{
char *new;
if (new=AllocPooled(pool,strlen(str)+1))
strcpy(new,str);
return(new);
}
VOID __asm desfunc(_a2 APTR pool,_a1 char *entry)
{
FreePooled(pool,entry,strlen(entry)+1);
}
/* for more sophisticated hooks see demo program WbMan.c */
SEE ALSO
MUIA_List_DestructHook, MUIA_List_DisplayHook
NAME
MUIA_List_DestructHook -- (V4 ) [IS.], struct Hook *
SPECIAL INPUTS
MUIV_List_DestructHook_String
FUNCTION
Set up a destruct hook for your list. For detailed
explanation see MUIA_List_ConstructHook.
SEE ALSO
MUIA_List_ConstructHook, MUIA_List_DisplayHook
NAME
MUIA_List_DisplayHook -- (V4 ) [IS.], struct Hook *
FUNCTION
Since MUI's lists can handle any kind of entries,
you have to supply a display hook to specify what
should actually be shown in the display.
The hook will be called with a pointer to the
entry to be displayed in A1 and a pointer to
a string array containing as many entries as
your list may have columns in A2.
You must fill this array with the strings that
you want to display.
Note: You can of course use MUI's text engine
facilities here to create e.g. right aligned
or centered columns.
Without a display hook, MUI expects a simple one
columned string list.
See MUIA_List_Format for details about column handling.
Note: Since version 6 of MUI, the display hook also gets the
position of the current entry as additional parameter. You
can easily do e.g. some line numbering using this feature. The
number (from 0 to NumEntries-1) is stored in the longword
*preceding* the column array (see example below).
EXAMPLE
/* list of file info blocks, two columned, name and size */
LONG __asm dispfunc(_a2 char **array,_a1 struct FileInfoBlock *fib)
{
static char buf1[20],buf2[20];
if (fib->fib_EntryType<0)
sprintf(buf2,"\33r%ld",fib->fib_Size);
else
strcpy(buf2,"\33r(dir)");
sprintf(buf1,"%ld",array[-1]); // get the line number.
*array++ = buf1;
*array++ = fib->fib_FileName;
*array = buf2;
return(0);
}
SEE ALSO
MUIA_List_Format, MUIA_Text_Contents
NAME
MUIA_List_DragSortable -- (V11) [ISG], BOOL
FUNCTION
If you set this attribute to TRUE, the user will be able
to move around entries in the list by using drag&drop.
NAME
MUIA_List_DropMark -- (V11) [..G], LONG
FUNCTION
After a successfull drop operation, this attribute holds
the position where we should insert the new entry(ies).
EXAMPLE
See DragnDrop example program
NAME
MUIA_List_Entries -- (V4 ) [..G], LONG
FUNCTION
Get the current number of entries in the list.
SEE ALSO
MUIA_List_First, MUIA_List_Visible, MUIA_List_Active
NAME
MUIA_List_First -- (V4 ) [..G], LONG
FUNCTION
Get the number of the entry displayed on top of
the list. You have to be prepared to get a result
of -1, which means that the list is not visible
at all (e.g. when the window is iconifed).
SEE ALSO
MUIA_List_Visible, MUIA_List_Entries, MUIA_List_Active
NAME
MUIA_List_Format -- (V4 ) [ISG], STRPTR
8 FUNCTION
MUI has the ability to handle multi column lists. To define
how many columns should be displayed and how they should be
formatted, you specify a format string.
This format string must contain one entry for each column
you want to see. Entries are seperated by commas, one
entry is parsed via dos.library/ReadArgs().
The template for a single entry looks like this:
DELTA=D/N,PREPARSE=P/K,WEIGHT=W/N,
MINWIDTH=MIW/N,MAXWIDTH=MAW/N,COL=C/N,BAR/S
DELTA
Space in pixel between this column and the next.
the last displayed column ignores this setting.
Defaults to 4.
PREPARSE
A preparse value for this column. Setting this
e.g. to "\33c" would make the column centered.
See MUIA_Text_Contents for other control codes.
WEIGHT
The weight of the column. As with MUI's group
class, columns are layouted with a minimum
size, a maximum size and weight. A column with
a weight of 200 would gain twice the space than
a column with a weight of 100.
Defaults to 100.
MINWIDTH
Minimum percentage width for the current column.
If your list is 200 pixel wide and you set this
to 25, your column will at least be 50 pixel.
The special value -1 for this parameter means that
the minimum width is as wide as the widest entry in
this column. This ensures that every entry will be
completely visible (as long as the list is wide enough).
Defaults to -1.
MAXWIDTH
Maximum percentage width for the current column.
If your list is 200 pixel wide and you set this
to 25, your column will not be wider as 50 pixel.
The special value -1 for this parameter means that
the maximum width is as wide as the widest entry in
this column.
Defaults to -1.
COL
This value adjusts the number of the current column.
This allows you to adjust the order of your columns
without having to change your display hook. See
example for details.
Defaults to current entry number (0,1,...)
BAR
Since muimaster.library V11, you can enable a
vertical bar between this and the next column by
using this switch.
If your list object gets so small there is not enough
place for the minwidth of a column, this column will
be hidden completely and the remaining space is
distributed between the remaining columns. This is not
true if the column is the first column, in this case
the entries will simply be clipped.
Note: You will have as many columns in your list as
entries in the format string (i.e. number of
commas + 1). Empty entries, e.g. with a format
string of ",,,," are perfectly ok.
The default list format is an empty string (""), this
means a one column list without special formatting.
BUGS
Currently there is a maximum of 64 columns for a list.
EXAMPLE
/* Three column list without further formatting: */
MUIA_List_Format: ",,"
/* Three column list, middle column centered: */
MUIA_List_Format: ",P=\33c,"
/* Three column list, display order 2 1 0: */
MUIA_List_Format: "COL=2,COL=1,COL=0"
/* now something more complex. */
/* the display hook defines six entries: */
dispfunc(_a2 char **array,_a1 struct Article *at)
{
*array++ = at->FromName; // col 0
*array++ = at->FromPath; // col 1
*array++ = at->ToName; // col 2
*array++ = at->ToPath; // col 3
*array++ = at->Date; // col 4
*array = at->Subject; // col 5
}
/* but we only want to have fromname, date and subject
/* actually displayed, subject shoud be centered: */
MUIA_List_Format, "COL=0,COL=4,COL=5 P=\33c"
/* maybe this looks kind of silly, why not make our */
/* display hook only fill in these three columns. */
/* well, if you would e.g. make the format string */
/* user configurable and document what your display */
/* hook puts into the array, the user could decide */
/* what columns he actually wants to see. */
/* The supplied example DFView does something like */
/* that. */
/* two column list: ! Eye 1234 !
! Foot 22 !
! Nose 22331 ! */
MUIA_List_Format, "MAW=100,P=\33r"
SEE ALSO
MUIA_List_DisplayHook, MUIA_Text_Contents
NAME
MUIA_List_InsertPosition -- (V9 ) [..G], LONG
FUNCTION
After insertion of an element with MUIM_List_Insert,
you can query the position of the new entry by
getting this attribute.
NAME
MUIA_List_MinLineHeight -- (V4 ) [I..], LONG
FUNCTION
Sets the minimum line height for lists in pixels. Useful
e.g. if you have custom images.
NAME
MUIA_List_MultiTestHook -- (V4 ) [IS.], struct Hook *
FUNCTION
If you plan to have a multi selecting list but not
all of your entries are actually multi selectable
(e.g. in a file requester), you can supply a
MUIA_List_MultiTestHook.
It will be called with a pointer to an entry in
A1 and should return TRUE if the entry is multi
selectable, FALSE otherwise.
EXAMPLE
/* multi test func for a list of file info blocks */
LONG __asm mtfunc(_a1 struct FileInfoBlock *fib)
{
if (fib->fib_DirEntryType<0)
return(TRUE);
else
return(FALSE);
}
SEE ALSO
MUIA_List_ConstructHook, MUIA_List_DestructHook
NAME
MUIA_List_Pool -- (V13) [I..], APTR
FUNCTION
Pass something from CreatePool() here if you dont want the list
to create its own memory pool but use this one instead. Note
that list class does *not* use semaphore protection when
accessing the pool, you must *not* use pools which are
accessed from different tasks than the applications main
task.
SEE ALSO
MUIA_List_PoolPuddleSize, MUIA_List_PoolThreshSize
NAME
MUIA_List_PoolPuddleSize -- (V13) [I..], ULONG
FUNCTION
Specify the puddle size for the lists memory pool.
Defaults to 2008. Is ignored if you specify your
own pool with MUIA_List_Pool.
SEE ALSO
MUIA_List_PoolThreshSize, MUIA_List_Pool
NAME
MUIA_List_PoolThreshSize -- (V13) [I..], ULONG
FUNCTION
Specify the thresh size for the lists memory pool.
Defaults to 1024. Is ignored if you specify your
own pool with MUIA_List_Pool.
SEE ALSO
MUIA_List_PoolPuddleSize, MUIA_List_Pool
NAME
MUIA_List_Quiet -- (V4 ) [.S.], BOOL
FUNCTION
If you add/remove lots of entries to/from a currently visible
list, this will cause lots of screen action and slow down
the operation. Setting MUIA_List_Quiet to true will
temporarily prevent the list from being refreshed, this
refresh will take place only once when you set it back
to false again.
EXAMPLE
set(list,MUIA_List_Quiet,TRUE);
AddThousandEntries(list);
set(list,MUIA_List_Quiet,FALSE);
SEE ALSO
MUIM_List_Insert, MUIM_List_Remove
NAME
MUIA_List_ShowDropMarks -- (V11) [ISG], BOOL
FUNCTION
If a list supports Drag & Drop, it usually indicates the place
where a new line would be inserted with some horizontal lines.
Showing this place doesnt make much sense if you dont care
about the drop position anyway, e.g. because your list is
always alphabetically sorted. You should set this attribute
to FALSE in these cases.
SEE ALSO
MUIA_List_DropMark
NAME
MUIA_List_SourceArray -- (V4 ) [I..], APTR
FUNCTION
The NULL terminated array given here is immediately inserted into the
list after object creation time.
EXAMPLE
static const char *KeyList[] =
{
"Cursor Up",
"Cursor Down",
"Cursor Left",
"Cursor Right",
NULL;
};
LV_Keys = ListviewObject,
MUIA_Listview_List, ListObject,
InputListFrame,
MUIA_List_AdjustWidth, TRUE,
MUIA_List_SourceArray, KeyList,
End,
End;
NAME
MUIA_List_Title -- (V6 ) [ISG], char *
FUNCTION
Specify a title for the current list. The title is displayed
at the very first line and doesn't scroll away when the list
top position moves.
Usually, the title is just a string. However, if you have
a multi column list with a custom display hook and you
want to have seperate titles for each of your columns,
you can set this attribute to TRUE. In this case, whenever
MUI feels that the list title has to be drawn, it will
call your display hook with a NULL entry pointer. Your
hook has to check for this NULL entry and fill the
given string array with your column titles. Layout of
the column titles follows the same rules as layout
of the lists entries.
EXAMPLE
/* display function for a multi columned file list with titles */
LONG __asm DisplayFunc(_a2 char **array,_a1 struct Entry *e)
{
struct Data *data = hook->h_Data;
if (e)
{
*array++ = e->Name;
*array++ = e->Size;
*array++ = e->Date;
*array++ = e->Time;
*array++ = e->Flags;
*array = e->Comment;
}
else
{
*array++ = "Name";
*array++ = "Size";
*array++ = "Date";
*array++ = "Time";
*array++ = "Flags";
*array = "Comment";
}
return(0);
}
SEE ALSO
MUIA_List_DisplayHook
NAME
MUIA_List_Visible -- (V4 ) [..G], LONG
FUNCTION
Get the current number of visible entries in the list.
You have to be prepared to get a result
of -1, which means that the list is not visible
at all (e.g. when the window is iconifed).
SEE ALSO
MUIA_List_First, MUIA_List_Entries, MUIA_List_Active
NAME
MUIM_List_Clear (V4 )
SYNOPSIS
DoMethod(obj,MUIM_List_Clear);
FUNCTION
Clear the list, all entries are removed. If a destruct
hook is set it will be called for every entry.
SEE ALSO
MUIM_List_Insert, MUIA_List_DestructHook
NAME
MUIM_List_CreateImage (V11)
SYNOPSIS
DoMethod(obj,MUIM_List_CreateImage,Object *obj, ULONG flags);
FUNCTION
If you want to have custom images in a listview (e.g.
like the little monitor icons in PSI), you should create
them as Bitmap objects (or Bodychunk objects) in the
setup method of your list class (use a subclass!).
After that, pass the newly created object pointer to
MUIM_List_CreateImage and use the result in your display
hook with
\33O[%08lx]
where %08lx must be replaced by the pointer you got
from MUIM_List_CreateImage.
When your list is done (i.e. in the Cleanup method),
kill your image with MUIM_List_DeleteImage and
dispose your object.
RESULT
The result you get is a black box pointer, it's not valid
to assume anything about it. The only useful thing you can
do is to include it in \33O[%08lx]. The result may be NULL
in which case MUI was unable to create the image, but the
\33O[] combination simply draws nothing when receiving a
NULL so it shouldnt be considered an error.
EXAMPLE
See ScreenList class in screen inspector source code psi.c
SEE ALSO
MUIM_List_DeleteImage
NAME
MUIM_List_DeleteImage (V11)
SYNOPSIS
DoMethod(obj,MUIM_List_DeleteImage,APTR listimg);
FUNCTION
Delete the image pointer returned from MUIM_List_CreateImage.
SEE ALSO
MUIM_List_DeleteImage
NAME
MUIM_List_Exchange (V4 )
SYNOPSIS
DoMethod(obj,MUIM_List_Exchange,LONG pos1, LONG pos2);
FUNCTION
Exchange two entries in a list.
INPUTS
pos1 - number of the first entry.
pos2 - number of the second entry.
Possible special values since muimaster.library V9:
MUIV_List_Exchange_Top 0
MUIV_List_Exchange_Active -1
MUIV_List_Exchange_Bottom -2
MUIV_List_Exchange_Next -3 /* only valid for second parameter */
MUIV_List_Exchange_Previous -4 /* only valid for second parameter */
SEE ALSO
MUIM_List_Insert, MUIM_List_Remove, MUIM_List_Move
NAME
MUIM_List_GetEntry (V4 )
SYNOPSIS
DoMethod(obj,MUIM_List_GetEntry,LONG pos, APTR *entry);
FUNCTION
Get an entry of a list.
INPUTS
pos - Number of entry, MUIV_List_GetEntry_Active can
be used to get the active entry.
entry - Pointer to a longword where the entry will
be stored. If the entry is not available
(either because you are out of bounds or
because there is no active entry), you will
receive a NULL.
EXAMPLE
/* iterate through a list containing file info blocks */
for (i=0;;i++)
{
struct FileInfoBlock *fib;
DoMethod(list,MUIM_List_GetEntry,i,&fib);
if (!fib) break;
printf("%s\n",fib->fib_FileName);
}
SEE ALSO
MUIM_List_Insert, MUIM_List_Remove
NAME
MUIM_List_Insert (V4 )
SYNOPSIS
DoMethod(obj,MUIM_List_Insert,APTR *entries, LONG count, LONG pos);
FUNCTION
Insert new entries into a list.
When the list has a construct hook, the given pointers
won't be inserted directly but instead passed through
to the construct hook.
INPUTS
entries - pointer to an array of pointers to be inserted.
Warning: This is a pointer to a pointer. See
example for details.
count - Number of elements to be inserted. If count==-1,
entries will be inserted until NULL pointer in
the entries array is found.
pos - New entries will be added in front of this entry.
MUIV_List_Insert_Top:
insert as first entry.
MUIV_List_Insert_Active:
insert in front of the active entry.
MUIV_List_Insert_Sorted:
insert sorted.
MUIV_List_Insert_Bottom:
insert as last entry.
If pos is bigger or equal to the number of entries
in the list, it's treated like MUIV_List_Insert_Bottom.
EXAMPLE
/* insert a string */
char *str = "New entry";
DoMethod(list,MUIM_List_Insert,&str,1,MUIV_List_Insert_Bottom);
/* insert an array */
char *str[] =
{
"Entry 1",
"Entry 2",
"Entry 3",
"Entry 4",
NULL
};
DoMethod(list,MUIM_List_Insert,str,-1,MUIV_List_Insert_Bottom);
SEE ALSO
MUIM_List_Remove, MUIA_List_ConstructHook
NAME
MUIM_List_InsertSingle (V7 )
SYNOPSIS
DoMethod(obj,MUIM_List_InsertSingle,APTR entry, LONG pos);
FUNCTION
Insert one new entry into a list. Using MUIM_List_Insert has
caused some confusion since it takes an array to items instead
a single item. To insert single items, MUIM_List_InsertSingle
is the better choice.
When the list has a construct hook, the given pointer
won't be inserted directly but instead passed through
to the construct hook.
INPUTS
entry - item to insert.
pos - New entry will be added in front of this entry.
MUIV_List_Insert_Top:
insert as first entry.
MUIV_List_Insert_Active:
insert in front of the active entry.
MUIV_List_Insert_Sorted:
insert sorted.
MUIV_List_Insert_Bottom:
insert as last entry.
If pos is bigger or equal to the number of entries
in the list, it's treated like MUIV_List_Insert_Bottom.
EXAMPLE
/* insert a string */
DoMethod(list,MUIM_List_InsertSingle,"foobar",MUIV_List_Insert_Bottom);
SEE ALSO
MUIM_List_Remove, MUIA_List_ConstructHook, MUIM_List_InsertSingle
NAME
MUIM_List_Jump (V4 )
SYNOPSIS
DoMethod(obj,MUIM_List_Jump,LONG pos);
FUNCTION
Scroll any entry into the visible part of a list.
Note: Jumping to an entry doesn't mean to make this
entry the active one. This can be done by
setting the MUIA_List_Active attribute.
INPUTS
pos - Number of the entry that should be made visible.
Use MUIV_List_Jump_Active to jump to the active
entry.
EXAMPLE
/* line 42 is interesting, so make it visible */
DoMethod(list,MUIM_List_Jump,42);
SEE ALSO
MUIA_List_Active
NAME
MUIM_List_Move (V9 )
SYNOPSIS
DoMethod(obj,MUIM_List_Move,LONG from, LONG to);
FUNCTION
Move an entry from one position to another.
INPUTS
pos1 - number of the first entry.
pos2 - number of the second entry.
Possible special values since muimaster.library V9:
MUIV_List_Move_Top 0
MUIV_List_Move_Active -1
MUIV_List_Move_Bottom -2
MUIV_List_Move_Next -3 /* only valid for second parameter */
MUIV_List_Move_Previous -4 /* only valid for second parameter */
SEE ALSO
MUIM_List_Insert, MUIM_List_Remove, MUIM_List_Exchange
NAME
MUIM_List_NextSelected (V6 )
SYNOPSIS
DoMethod(obj,MUIM_List_NextSelected,LONG *pos);
FUNCTION
Iterate through the selected entries of a list.
This method steps through the contents of a (multi
select) list and returns every entry that is currently
selected. When no entry is selected but an entry is
active, only the active entry will be returned.
This behaviour will result in not returning the
active entry when you have some other selected
entries somewhere in your list. Since the active
entry just acts as some kind of cursor mark,
this seems to be the only sensible possibility
to handle multi selection together with keyboard
control.
INPUTS
pos - a pointer to longword that will hold the number
of the returned entry. Must be set to
MUIV_List_NextSelected_Start at start of iteration.
Is set to MUIV_List_NextSelected_End when iteration
is finished.
EXAMPLE
/* Iterate through a list with FileInfoBlocks */
struct FileInfoBlock *fib;
LONG id = MUIV_List_NextSelected_Start;
for (;;)
{
DoMethod(list,MUIM_List_NextSelected,&id);
if (id==MUIV_List_NextSelected_End) break;
DoMethod(list,MUIM_List_GetEntry,id,&fib);
printf("selected: %s\n",fib->fib_FileName);
}
SEE ALSO
MUIM_List_Select
NAME
MUIM_List_Redraw (V4 )
SYNOPSIS
DoMethod(obj,MUIM_List_Redraw,LONG pos);
FUNCTION
If you made some changes to an entry of your list and
want these changes to be shown in the display, you will
have to call this method.
INPUTS
pos - Number of the line to redraw. When the line is not
currently visible, nothing will happen. Specials:
MUIV_List_Redraw_Active:
redraw the active line (if any),
MUIV_List_Redraw_All:
redraw all lines.
EXAMPLE
/* do a complete refresh: */
DoMethod(list,MUIM_List_Redraw,MUIV_List_Redraw_All);
NAME
MUIM_List_Remove (V4 )
SYNOPSIS
DoMethod(obj,MUIM_List_Remove,LONG pos);
FUNCTION
Remove an entry from a list.
INPUTS
pos - number of the entry to be removed or one of
MUIV_List_Remove_First,
MUIV_List_Remove_Active,
MUIV_List_Remove_Last.
MUIV_List_Remove_Selected.
When the active entry is removed, the following entry
will become active.
EXAMPLE
/* when delete is pressed, remove the active entry */
DoMethod(btdel,MUIM_Notify,MUIA_Pressed,FALSE,
list,2,MUIM_List_Remove,MUIV_List_Remove_Active);
SEE ALSO
MUIM_List_Insert, MUIA_List_DestructHook
NAME
MUIM_List_Select (V4 )
SYNOPSIS
DoMethod(obj,MUIM_List_Select,LONG pos, LONG seltype, LONG *state);
FUNCTION
Select/deselect a list entry or ask an entry if its
selected.
INPUTS
pos - Number of the entry or
MUIV_List_Select_Active for the active entry.
MUIV_List_Select_All for all entries.
seltype - MUIV_List_Select_Off unselect entry.
MUIV_List_Select_On select entry.
MUIV_List_Select_Toggle toggle entry.
MUIV_List_Select_Ask just ask about the state.
state - Pointer to a longword. If not NULL, this will
be filled with the current selection state.
NOTES
Since version V9 of muimaster.library:
If pos==MUIV_List_Select_All and seltype==MUIV_List_Select_Ask,
state will be filled with the total number of selected entries.
EXAMPLE
/* toggle selection state of active entry */
DoMethod(list,MUIM_List_Select,MUIV_List_Select_Active,
MUIV_List_Select_Toggle,NULL);
/* select all entries */
DoMethod(list,MUIM_List_Select,MUIV_List_Select_All,
MUIV_List_Select_On,NULL);
SEE ALSO
MUIA_List_MultiTestHook
NAME
MUIM_List_Sort (V4 )
SYNOPSIS
DoMethod(obj,MUIM_List_Sort);
FUNCTION
Sort the list. MUI uses an iterative quicksort algorithm,
no stack problems will occur.
SEE ALSO
MUIA_List_CompareHook
NAME
MUIM_List_TestPos (V11)
SYNOPSIS
DoMethod(obj,MUIM_List_TestPos,LONG x, LONG y, struct MUI_List_TestPos_Result *res);
FUNCTION
Find out which line/column of a listview is currently
displayed at a certain position.
| © 1997, Stefan Stuntz | [MUI Homepage] [Autodoc Index] [Feedback] | Updated: 29-Mar-97 |