MUI_Listview

Listview.mui

Super class

Group.mui

Background

It's important to know that MUI makes a difference between a list and a listview. A list is just a collection of some entries and is part of a listview, which attaches a scrollbar and input handling to the list.

During object creation time, you have to be careful not specifying listview tags for the list object or list tags for the listview object, both versions won't work. Once the objects are setup, you can of course talk to the listview as if it was the list directly.

Since MUI4 Listview class is just a wrapper for List class and List class can be used directly without a surrounding Listview object. As such List class of MUI4 understands all attributes and Methods of Listview class. However, if your application wants to maintain compatibility to MUI3 then of course the old Listview plus List approach must be used.

Attributes

Attribute	Version	ISG	Type
MUIA_Listview_AgainClick	V20	I.G	BOOL
MUIA_Listview_ClickColumn	V7	..G	LONG
MUIA_Listview_DefClickColumn	V7	ISG	LONG
MUIA_Listview_DoubleClick	V4	I.G	BOOL
MUIA_Listview_DragType	V11	ISG	LONG
MUIA_Listview_Input	V4	I..	BOOL
MUIA_Listview_List	V4	I.G	Object *
MUIA_Listview_MultiSelect	V7	I..	LONG
MUIA_Listview_ScrollerPos	V10	I..	BOOL
MUIA_Listview_SelectChange	V4	..G	BOOL

MUIA_Listview_AgainClick

NAME

MUIA_Listview_AgainClick -- V20 [I.G], BOOL, 0x804214c2

FUNCTION

This attribute is set to TRUE whenever the user clicks on the same entry again, but not necessarily within the system's double click time.

SEE ALSO

MUIA_Listview_DoubleClick

MUIA_Listview_ClickColumn

NAME

MUIA_Listview_ClickColumn -- V7 [..G], LONG, 0x8042d1b3

FUNCTION

When using a multi column list, this attribute contains the number of the column where the user clicked.

SEE ALSO

MUIA_Listview_DefClickColumn

MUIA_Listview_DefClickColumn

NAME

MUIA_Listview_DefClickColumn -- V7 [ISG], LONG, 0x8042b296

FUNCTION

When the listview is controlled with the keyboard and the user presses RETURN, the value given here will be used as default for MUIA_Listview_ClickColumn.

SEE ALSO

MUIA_Listview_ClickColumn

MUIA_Listview_DoubleClick

NAME

MUIA_Listview_DoubleClick -- V4 [I.G], BOOL, 0x80424635

FUNCTION

This attribute is set to TRUE whenever the user double clicks on an entry in the list.

SEE ALSO

MUIA_Listview_SelectChange

MUIA_Listview_DragType

NAME

MUIA_Listview_DragType -- V11 [ISG], LONG, 0x80425cd3

SPECIAL INPUTS

• MUIV_Listview_DragType_None
• MUIV_Listview_DragType_Immediate

FUNCTION

If you want the user to be able to drag items out of your list, you must set this for the listview class. Currently, only one drag type is defined.

MUIA_Listview_Input

NAME

MUIA_Listview_Input -- V4 [I..], BOOL, 0x8042682d

FUNCTION

Setting this to FALSE will result in a read only listview.

Defaults to TRUE.

SEE ALSO

MUIA_Listview_MultiSelect

MUIA_Listview_List

NAME

MUIA_Listview_List -- V4 [I.G], Object *, 0x8042bcce

FUNCTION

Every listview needs a list object as child. Specify it here.

As every other child, it will get disposes when its parent object is disposed.

EXAMPLE

ListviewObject,
  MUIA_Listview_Input, FALSE,
  MUIA_Listview_List, ListObject,
    ReadListFrame,
    MUIA_List_Format, ",,",
    End,
  nd;

SEE ALSO

MUIA_Listview_Input

MUIA_Listview_MultiSelect

NAME

MUIA_Listview_MultiSelect -- V7 [I..], LONG, 0x80427e08

SPECIAL INPUTS

• MUIV_Listview_MultiSelect_None
• MUIV_Listview_MultiSelect_Default
• MUIV_Listview_MultiSelect_Shifted
• MUIV_Listview_MultiSelect_Always

FUNCTION

Four possibilities exist for a listviews multi select capabilities:

MUIV_Listview_MultiSelect_None The listview cannot multiselect at all.

MUIV_Listview_MultiSelect_Default The multi select type (with or without shift) depends on the user's preferences setting.

MUIV_Listview_MultiSelect_Shifted Overrides the users prefs, multi selecting only together with shift key.

MUIV_Listview_MultiSelect_Always Overrides the users prefs, multi selecting without shift key.

Please do NOT override the users prefs unless you have a good reason!

SEE ALSO

MUIA_List_MultiTestHook

MUIA_Listview_ScrollerPos

NAME

MUIA_Listview_ScrollerPos -- V10 [I..], BOOL, 0x8042b1b4

SPECIAL INPUTS

• MUIV_Listview_ScrollerPos_Default
• MUIV_Listview_ScrollerPos_Left
• MUIV_Listview_ScrollerPos_Right
• MUIV_Listview_ScrollerPos_None

FUNCTION

Specifies the position of a listviews scrollbar. Don't use this tag unless it's absolutely required!

If you specify MUIV_Listview_ScrollerPos_None, your listview won't get a scroller at all and look much like a list object alone. However, listviews without scroller are still more powerful than list objects as they feature e.g. drag&drop possibilities.

Creating listviews without a scrollbar makes sense if you want to have the scrollbar somewhere else, e.g. outside of a horizontal virtual group where the listview resides. This technique allows the creation of horizontally scrollable listviews.

When you create the scrollbar on your own, connect it to the list object (not listview object!) like this:

DoMethod(sbar, MUIM_Notify, MUIA_Prop_First, MUIV_EveryTime,
  list, 3, MUIM_Set,
  MUIA_List_TopPixel, MUIV_TriggerValue);

DoMethod(list, MUIM_Notify, MUIA_List_TotalPixel, MUIV_EveryTime,
  sbar, 3, MUIM_Set,
  MUIA_Prop_Entries, MUIV_TriggerValue);

DoMethod(list, MUIM_Notify, MUIA_List_VisiblePixel, MUIV_EveryTime,
  sbar, 3, MUIM_Set,
  MUIA_Prop_Visible, MUIV_TriggerValue);

DoMethod(list, MUIM_Notify, MUIA_List_TopPixel, MUIV_EveryTime,
  sbar, 3, MUIM_Set,
  MUIA_Prop_First, MUIV_TriggerValue);

MUIA_Listview_SelectChange

NAME

MUIA_Listview_SelectChange -- V4 [..G], BOOL, 0x8042178f

FUNCTION

This attribute is set to TRUE whenever the selection state of one or more items in the list is changing. You can use this e.g. if you want to display the number of selected items in a status line.

SEE ALSO

MUIA_Listview_MultiSelect

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Updated: 11-Oct-2021