c4d.gui.TreeViewFunctions

class c4d.gui.TreeViewFunctions

Inherit this class to supply a data and view model for c4d.gui.TreeViewCustomGui.

Create an instance of the implemented class and pass it to TreeViewCustomGui.SetRoot().

DrawInfo Dict

bgCol	int or c4d.Vector	The background color ID or vector.
frame	c4d.gui.GeUserArea	The user area to draw in.
xpos	int	The position X coordinate.
ypos	int	The position Y coordinate.
width	int	The width.
height	int	The height.
line	int	The line.
col	int	The column.

MouseInfo Dict

mx	float	The mouse X coordinate.
my	float	The mouse Y coordinate.
button	int	The mouse button: MOUSEINFO_BUTTON_LEFT Left button. MOUSEINFO_BUTTON_RIGHT Right button. MOUSEINFO_BUTTON_MIDDLE Middle button.
mxRelative	float	The mouse position relative to the end of the horizontal tree lines. Usually mouse coordinates are in list view space. This can become difficult when the user clicks into the LV_USERTREE column, hence this member.
startDrag	bool	Not used.
startpaint	bool	This is needed in the Layer Manager. The user can change the state of the column by clicking somewhere and dragging the mouse. To start this drag, set startpaint to True in TreeViewFunctions.MouseDown().
inpaint	bool	This is needed in the Layer Manager. The user can change the state of the column by clicking somewhere and dragging the mouse. TreeViewFunctions.MouseDown() will be called for each line with inpaint set to True.
inputmsg	c4d.BaseContainer	The container originally sent to the GeUserArea.InputEvent() of the tree view’s user area. Never None.
frame	c4d.gui.GeUserArea	The user area to draw in.
xpos	int	The position X coordinate.
ypos	int	The position Y coordinate.
width	int	The width.
height	int	The height.
line	int	The line.
col	int	The column.

TreeViewFloatSliderInfo Dict

Key	Value Type	Description
value	float	The current value for the entry.
minValue	float	The minimum range of the slider as drawn.
maxValue	float	The maximum range of the slider as drawn.
minNominalValue	float	The minimum range of the slider should the user drag the value out of bounds to re-size the slider range extents.
maxNominalValue	float	The maximum range of the slider should the user drag the value out of bounds to re-size the slider range extents.
increment	float	The increment used for vertical modification.
floatFormat	int	The format one of the following FORMAT_PERCENT, FORMAT_DEGREE, FORMAT_FLOAT, FORMAT_METER.
state	int	Set to the current state of the slider.
unit	int	The sliders unit.

TreeViewDropDownMenuInfo Dict

Key	Value Type	Description
entry	int	The selected entry.
menu	c4d.BaseContainer	The menu itself described by id : string(name).
state	int	Set to the current state of the dropdown.

Methods Signatures

Check

TreeViewFunctions.IsChecked(self, root, userdata, ...)	Called to retrieve the checkbox status of object obj for column lColumn.
TreeViewFunctions.SetCheck(self, root, userdata, ...)	Called to set the checkbox status of object obj.

Context Menu

TreeViewFunctions.ContextMenuCall(self, root, userdata, ...)	Called by a command in the context menu setup in CreateContextMenu().
TreeViewFunctions.CreateContextMenu(self, root, userdata, ...)	Called to build a context menu for object obj and column lColumn.

Drag

TreeViewFunctions.AcceptDragObject(self, root, userdata, ...)	Called to check if object obj can accept the specified drag-and-drop action, and in that case what the result would be.
TreeViewFunctions.DragStart(self, root, userdata, obj)	Called to determine if object obj can be dragged or not and if dragged objects will be selected or not.
TreeViewFunctions.GenerateDragArray(self, root, userdata, obj)	Called to generate a drag array for object obj.
TreeViewFunctions.GetDragType(self, root, userdata, obj)	Called to retrieve the drag type of object obj, i.e. the type that the user would get if he started a drag in that cell.
TreeViewFunctions.SetDragObject(self, root, userdata, obj)	Called to set the drag object to obj.

Draw

TreeViewFunctions.DrawCell(self, root, userdata, ...)	Called to draw the cell for object obj in column col into the user area in drawinfo[‘frame’].
TreeViewFunctions.DrawHeaderCell(self, root, userdata, ...)	Called to draw the header for column col into the user area in drawinfo[‘frame’].

Drop Down Menu

TreeViewFunctions.GetDropDownMenu(self, root, userdata, ...)	Gets a drop down menu and it’s current selected entry.
TreeViewFunctions.SetDropDownMenu(self, root, userdata, ...)	Called to set the current menu entry by e.g. user interaction.

Float Slider

TreeViewFunctions.GetFloatValue(self, root, userdata, ...)	Gets the value and ranges for a float slider.
TreeViewFunctions.SetFloatValue(self, root, userdata, ...)	Called to set the float value from the slider by e.g. user interaction.

Header/Column

TreeViewFunctions.GetHeaderSortArrow(self, root, userdata, ...)	Called to retrieve the sort mode of column lColID.
TreeViewFunctions.IsMoveColAllowed(self, root, userdata, ...)	Called to check if column lColID can be moved or not.
TreeViewFunctions.IsResizeColAllowed(self, root, userdata, ...)	Called to check if column lColID can be resized or not.

ID

TreeViewFunctions.GetId(self, root, userdata, obj)

Called to retrieve the ID of object obj.

Input Events

TreeViewFunctions.DeletePressed(self, root, userdata)	Called when a delete event is received.
TreeViewFunctions.DoubleClick(self, root, userdata, ...)	Called when a mouse double click event is received.
TreeViewFunctions.FinishInput(self, root, userdata, data)	Called at the end of the complete input handling.
TreeViewFunctions.HeaderClick(self, root, userdata, ...)	Called when a header has been clicked.
TreeViewFunctions.InputEvent(self, root, userdata, ...)	Called when an input event is received.
TreeViewFunctions.MouseDown(self, root, userdata, ...)	Called when a mouse down event is received.
TreeViewFunctions.StartInput(self, root, userdata)	Called before input loop starts.

Insert Object

TreeViewFunctions.InsertObject(self, root, userdata, ...)

Called to insert dragobject as specified.

Layout

TreeViewFunctions.GetBackgroundColor(self, root, userdata, ...)	Called to specify the background color of line.
TreeViewFunctions.GetColors(self, root, userdata, ...)	Called to specify the text colors of object obj.
TreeViewFunctions.GetColumnWidth(self, root, userdata, ...)	Called to retrieve the column width of object obj in column col.
TreeViewFunctions.GetHeaderColumnWidth(self, root, userdata, ...)	Called to retrieve the width of the header for column col.
TreeViewFunctions.GetLineHeight(self, root, userdata, ...)	Called to retrieve the line height of object obj in column col.
TreeViewFunctions.GetMinHeaderHeight(self, root, userdata, area)	Called to retrieve the minimum header height.

Name and Bubble help

TreeViewFunctions.EmptyText(self, root, userdata)	Called to requests the text to display when the treeview area is completely empty such as “Drag falloff object’s here”
TreeViewFunctions.GetBubbleHelp(self, root, userdata, ...)	Called to retrieve the bubble help of object.
TreeViewFunctions.GetName(self, root, userdata, obj)	Called to retrieve the name of object obj.
TreeViewFunctions.GetNameForEdit(self, root, userdata, obj)	Called to retrieve the name of object obj for display in the edit text box.
TreeViewFunctions.SetName(self, root, userdata, ...)	Called to set the name of object obj.

Navigation

TreeViewFunctions.GetDown(self, root, userdata, obj)	Called to retrieve the first child of obj.
TreeViewFunctions.GetFirst(self, root, userdata)	Called to retrieve the first object of the tree.
TreeViewFunctions.GetNext(self, root, userdata, obj)	Called to retrieve the object after obj.
TreeViewFunctions.GetPred(self, root, userdata, obj)	Called to retrieve the object before obj.

Notifications

TreeViewFunctions.AddRow(self, root, userdata)	Called when a requests to add a row to the treeview.
TreeViewFunctions.ColumnMoved(self, root, userdata, ...)	Called when a column has been moved.
TreeViewFunctions.PaintFinished(self, root, userdata)	Called when a paint selection has been performed in the tree view.
TreeViewFunctions.Scrolled(self, root, userdata, ...)	Called when the tree view has been scrolled.
TreeViewFunctions.SelectionChanged(self, root, userdata)	Called when selection has changed.

Open

TreeViewFunctions.IsOpened(self, root, userdata, obj)	Called to retrieve the folding status of object obj.
TreeViewFunctions.Open(self, root, userdata, ...)	Called to open or close object obj.

Select

TreeViewFunctions.IsSelectable(self, root, userdata, obj)	Checks if the object is selectable, used to determine if the object should be skipped (not selectable) or not (selectable) when changing selection with keyboard (Up/Down/Home/End keys).
TreeViewFunctions.IsSelected(self, root, userdata, obj)	Called to retrieve the selection status of object obj.
TreeViewFunctions.Select(self, root, userdata, ...)	Called to select object obj.

Tristate

TreeViewFunctions.IsTristate(self, root, userdata)

Called to retrieve the tristate flag of the tree.

Methods Documentation

TreeViewFunctions.IsChecked(self, root, userdata, obj, lColumn)

Called to retrieve the checkbox status of object obj for column lColumn.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• lColumn (int) – The column index.

Return type

int

Returns

A combination of the following flags or c4d.NOTOK to show no checkbox:

LV_CHECKBOX_ENABLED	Checkbox is enabled.
LV_CHECKBOX_CHECKED	Checkbox is checked.
LV_CHECKBOX_TRISTATE	Checkbox tristate.
LV_CHECKBOX_HIDE	Checkbox is hidden.

TreeViewFunctions.SetCheck(self, root, userdata, obj, lColumn, bCheck, bcMsg)

Called to set the checkbox status of object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• lColumn (int) – The column index.

• bCheck (bool) – True if the checkbox should be checked, otherwise False.

• bcMsg (c4d.BaseContainer) – The container originally sent to the GeUserArea.InputEvent() of the tree view’s user area.

TreeViewFunctions.ContextMenuCall(self, root, userdata, obj, lColumn, lCommand)

Called by a command in the context menu setup in CreateContextMenu().

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• lColumn (int) – The column index.

• lCommand (int) – The menu command ID.

Return type

bool

Returns

True if the command has been processed and the data needs to be updated, otherwise False.

TreeViewFunctions.CreateContextMenu(self, root, userdata, obj, lColumn, bc)

Called to build a context menu for object obj and column lColumn.

See also

c4d.gui.ShowPopupDialog() for the format.

Note

bc container already contains 2 default items: c4d.ID_TREEVIEW_CONTEXT_REMOVE and c4d.ID_TREEVIEW_CONTEXT_RESET. These may be removed.

The added menu entry IDs must be larger than c4d.ID_TREEVIEW_FIRST_NEW_ID.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• lColumn (int) – The column index.

• bc (c4d.BaseContainer) – Add context menu entries to this container.

TreeViewFunctions.AcceptDragObject(self, root, userdata, obj, dragtype, dragobject)

Called to check if object obj can accept the specified drag-and-drop action, and in that case what the result would be.

Note

If obj is None then dragobject should be inserted as a child of the root.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (Optional[any]) – An object in the tree.

• dragtype (int) –

  The drag type:

  DRAGTYPE_ATOMARRAY	Atom array. The data is a list of c4d.C4DAtom.
  DRAGTYPE_CMDPALETTE	Not supported.
  DRAGTYPE_COMMAND	Not supported.
  DRAGTYPE_DESCID	Description ID. The data is a dict(‘did’: c4d.DescID, ‘arr’: list of c4d.C4DAtom).
  DRAGTYPE_ICON	Not supported.
  DRAGTYPE_FILES	Files. The data is a string with the filename.
  DRAGTYPE_FILENAME_IMAGE	Image. The data is a string with the filename.
  DRAGTYPE_FILENAME_OTHER	Other filename. The data is a string with the filename.
  DRAGTYPE_FILENAME_SCENE	Scene filename. The data is a string with the filename.
  DRAGTYPE_MANAGER	Not supported.
  DRAGTYPE_RGB	RGB color. The data is a c4d.Vector.
  DRAGTYPE_RGB_ARRAY	RGB color array. The data is a list of c4d.Vector.
  DRAGTYPE_RGBA_ARRAY	RGBA color array. The data is a maxon.BaseArray of maxon.ColorA.
  DRAGTYPE_BROWSER	Browser drag message. The data is a list of string with the filename.
  DRAGTYPE_ASSET	New in version 2023.2.0: Message ID for Asset browser assets, the message data is a maxon.DragAndDropDataAssetArray.

• dragobject (any) – The drag object.

Return type

Tuple[int, bool]

Returns

A tuple with the following information:

• int: The insert mode:

  INSERT_BEFORE	Insert before.
  INSERT_AFTER	Insert after.
  INSERT_UNDER	Insert under.
  INSERT_REPLACE	Replace the object.

  Note

  The ACCEPT_DRAG_OBJECT_FORCE_COPY bit flag can be used together with the INSERT constants.

• bool: True if copying is allowed to this position, otherwise False.

TreeViewFunctions.DragStart(self, root, userdata, obj)

Called to determine if object obj can be dragged or not and if dragged objects will be selected or not.

New in version R19.024.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

int

Returns

A combination of the following flags:

TREEVIEW_DRAGSTART_ALLOW	Allow dragging.
TREEVIEW_DRAGSTART_SELECT	Select the picked object.

TreeViewFunctions.GenerateDragArray(self, root, userdata, obj)

Called to generate a drag array for object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

List[c4d.C4DAtom]

Returns

The drag objects for obj.

TreeViewFunctions.GetDragType(self, root, userdata, obj)

Called to retrieve the drag type of object obj, i.e. the type that the user would get if he started a drag in that cell.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

int

Returns

The object drag type, or c4d.NOTOK to disable drag-and-drop:

DRAGTYPE_ATOMARRAY	Atom array. The data is a list of c4d.C4DAtom.
DRAGTYPE_CMDPALETTE	Not supported.
DRAGTYPE_COMMAND	Not supported.
DRAGTYPE_DESCID	Description ID. The data is a dict(‘did’: c4d.DescID, ‘arr’: list of c4d.C4DAtom).
DRAGTYPE_ICON	Not supported.
DRAGTYPE_FILES	Files. The data is a string with the filename.
DRAGTYPE_FILENAME_IMAGE	Image. The data is a string with the filename.
DRAGTYPE_FILENAME_OTHER	Other filename. The data is a string with the filename.
DRAGTYPE_FILENAME_SCENE	Scene filename. The data is a string with the filename.
DRAGTYPE_MANAGER	Not supported.
DRAGTYPE_RGB	RGB color. The data is a c4d.Vector.
DRAGTYPE_RGB_ARRAY	RGB color array. The data is a list of c4d.Vector.
DRAGTYPE_RGBA_ARRAY	RGBA color array. The data is a maxon.BaseArray of maxon.ColorA.
DRAGTYPE_BROWSER	Browser drag message. The data is a list of string with the filename.
DRAGTYPE_ASSET	New in version 2023.2.0: Message ID for Asset browser assets, the message data is a maxon.DragAndDropDataAssetArray.

TreeViewFunctions.SetDragObject(self, root, userdata, obj)

Called to set the drag object to obj.

New in version R19.024.

Note

Helps to determine if dragging happens internally (rearranged items) or externally (dragged items from another treeview for instance).

To check this, store the drag object data and compare it with dragobject in InsertObject().

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – The drag object on drag start.

TreeViewFunctions.DrawCell(self, root, userdata, obj, col, drawinfo, bgcolor)

Called to draw the cell for object obj in column col into the user area in drawinfo[‘frame’].

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• col (int) – The column index.

• drawinfo (dict) – The draw information. See DrawInfo Dict.

• bgcolor (int or c4d.Vector) – The background color.

Return type

int or c4d.Vector

Returns

The background color as color ID or vector.

TreeViewFunctions.DrawHeaderCell(self, root, userdata, col, drawinfo)

Called to draw the header for column col into the user area in drawinfo[‘frame’].

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• col (int) – The column index.

• drawinfo (dict) – The draw information. See DrawInfo Dict.

Return type

bool

Returns

True if the header has been drawn or False if the header should be drawn by the tree view.

TreeViewFunctions.GetDropDownMenu(self, root, userdata, obj, lColumn, menuInfo)

Gets a drop down menu and it’s current selected entry.

New in version 25.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• lColumn (int) – The column index.

• menuInfo (The menu information. See TreeViewDropDownMenuInfo Dict.) – dict

TreeViewFunctions.SetDropDownMenu(self, root, userdata, obj, lColumn, entry)

Called to set the current menu entry by e.g. user interaction.

New in version 25.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• lColumn (int) – The column index.

• entry (The entry that the user has picked.) – int

TreeViewFunctions.GetFloatValue(self, root, userdata, obj, lColumn, sliderInfo)

Gets the value and ranges for a float slider.

New in version 25.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• lColumn (int) – The column index.

• sliderInfo (The slider information. See TreeViewFloatSliderInfo Dict.) – dict

TreeViewFunctions.SetFloatValue(self, root, userdata, obj, lColumn, value)

Called to set the float value from the slider by e.g. user interaction.

New in version 25.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• lColumn (int) – The column index.

• value (The value set by the user.) – float

TreeViewFunctions.GetHeaderSortArrow(self, root, userdata, lColID)

Called to retrieve the sort mode of column lColID.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• lColID (int) – The column index.

Return type

int

Returns

The sort direction.

TreeViewFunctions.IsMoveColAllowed(self, root, userdata, lColID)

Called to check if column lColID can be moved or not.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• lColID (int) – The column index.

Return type

bool

Returns

True if the column can be moved, otherwise False.

TreeViewFunctions.IsResizeColAllowed(self, root, userdata, lColID)

Called to check if column lColID can be resized or not.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• lColID (int) – The column index.

Return type

bool

Returns

True if the column can be resized, otherwise False.

TreeViewFunctions.GetId(self, root, userdata, obj)

Called to retrieve the ID of object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

int

Returns

The object ID.

TreeViewFunctions.DeletePressed(self, root, userdata)

Called when a delete event is received.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

TreeViewFunctions.DoubleClick(self, root, userdata, obj, col, mouseinfo)

Called when a mouse double click event is received.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• col (int) – The column index.

• mouseinfo (dict) – The mouse information. See MouseInfo Dict.

Return type

bool

Returns

True if the event was handled, otherwise False.

TreeViewFunctions.FinishInput(self, root, userdata, data)

Called at the end of the complete input handling.

New in version 24.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

Param

Data generated in TreeViewCustomGui.StartInput().

Type

maxon.Data

TreeViewFunctions.HeaderClick(self, root, userdata, lColID, lChannel, bDblClk, mouseX, mouseY, ua)

Called when a header has been clicked.

Changed in version R20: Added parameters mouseX, mouseY and ua.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• lColID (int) – The column index.

• lChannel (int) –

  The mouse channel:

  BFM_INPUT_MOUSELEFT	Left mouse button.
  BFM_INPUT_MOUSERIGHT	Right mouse button.
  BFM_INPUT_MOUSEMIDDLE	Middle mouse button.
  BFM_INPUT_MOUSEX1	Fourth mouse button.
  BFM_INPUT_MOUSEX2	Five mouse button.
  BFM_INPUT_MOUSEWHEEL	Mouse wheel message.
  BFM_INPUT_MOUSEMOVE	Mouse move message.
  BFM_INPUT_MOUSEMOVE	Mouse move message.
  BFM_INPUT_WHEELSCROLL	New in version S22: True for scroll events on a classic wheel mouse. False for everything else (touchpad, magic mouse).

• bDblClk (int) – True for double-click event, otherwise False.

• mouseX (int) –

  New in version R20: The mouse horizontal position local to the left hand edge of the column, or NOTOK if TREEVIEW_MOVE_COLUMN is set to true.

• mouseY (int) –

  New in version R20: The mouse vertical position local to the header top, or NOTOK if TREEVIEW_MOVE_COLUMN is set to true.

• ua (Optional[c4d.gui.GeUserArea]) –

  New in version R20: The header’s user area, or None if TREEVIEW_MOVE_COLUMN is set to true.

Return type

bool

Returns

True if the tree view needs to be updated, otherwise False.

TreeViewFunctions.InputEvent(self, root, userdata, pArea, msg)

Called when an input event is received.

Note

All information about the input event is stored in the msg container.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• pArea (c4d.gui.GeUserArea) – The user area of the tree view.

• msg (c4d.BaseContainer) – The event container.

Return type

bool

Returns

True if the event was handled, otherwise False.

TreeViewFunctions.MouseDown(self, root, userdata, obj, col, mouseinfo, rightButton)

Called when a mouse down event is received.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• col (int) – The column index.

• mouseinfo (dict) – The mouse information. See MouseInfo Dict.

• rightButton (bool) – True if the right mouse button was used, otherwise False.

Return type

bool

Returns

True if the event was handled, otherwise False.

TreeViewFunctions.StartInput(self, root, userdata)

Called before input loop starts.

This functions allows to lock resources while input events are executed.

New in version 24.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

Returns

data which will be passed to TreeViewCustomGui.FinishInput().

Return type

maxon.Data

TreeViewFunctions.InsertObject(self, root, userdata, obj, dragtype, dragobject, insertmode, bCopy)

Called to insert dragobject as specified.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• dragtype (int) –

  The drag type:

  DRAGTYPE_ATOMARRAY	Atom array. The data is a list of c4d.C4DAtom.
  DRAGTYPE_CMDPALETTE	Not supported.
  DRAGTYPE_COMMAND	Not supported.
  DRAGTYPE_DESCID	Description ID. The data is a dict(‘did’: c4d.DescID, ‘arr’: list of c4d.C4DAtom).
  DRAGTYPE_ICON	Not supported.
  DRAGTYPE_FILES	Files. The data is a string with the filename.
  DRAGTYPE_FILENAME_IMAGE	Image. The data is a string with the filename.
  DRAGTYPE_FILENAME_OTHER	Other filename. The data is a string with the filename.
  DRAGTYPE_FILENAME_SCENE	Scene filename. The data is a string with the filename.
  DRAGTYPE_MANAGER	Not supported.
  DRAGTYPE_RGB	RGB color. The data is a c4d.Vector.
  DRAGTYPE_RGB_ARRAY	RGB color array. The data is a list of c4d.Vector.
  DRAGTYPE_RGBA_ARRAY	RGBA color array. The data is a maxon.BaseArray of maxon.ColorA.
  DRAGTYPE_BROWSER	Browser drag message. The data is a list of string with the filename.
  DRAGTYPE_ASSET	New in version 2023.2.0: Message ID for Asset browser assets, the message data is a maxon.DragAndDropDataAssetArray.

• dragobject (any) – The drag object on drag receive.

• insertmode (int) –

  The insert mode:

  INSERT_BEFORE	Insert before.
  INSERT_AFTER	Insert after.
  INSERT_UNDER	Insert under.
  INSERT_REPLACE	Replace the object.

• bCopy (bool) – True if the object should be copied, otherwise False.

TreeViewFunctions.GetBackgroundColor(self, root, userdata, obj, line, col)

Called to specify the background color of line.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• line (int) – The line index.

• col (Union[int, c4d.Vector]) – Set this to the background color for line. Can be a vector or a color

Return type

Union[int, c4d.Vector]

Returns

The background color for line as color ID or vector.

TreeViewFunctions.GetColors(self, root, userdata, obj, pNormal, pSelected)

Called to specify the text colors of object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• pNormal (Union[int, c4d.Vector]) – Set this to the normal text color for obj. Can be a vector or a color ID.

• pSelected (Union[int, c4d.Vector]) – Set this to the selected text color for obj. Can be a vector or a color ID.

Return type

Union[Tuple[Union[int, c4d.Vector], Union[int, c4d.Vector]], List[Union[int, c4d.Vector], Union[int, c4d.Vector]]]

Returns

The normal and selected text color as color ID or vector.

TreeViewFunctions.GetColumnWidth(self, root, userdata, obj, col, area)

Called to retrieve the column width of object obj in column col.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• col (int) – The column index.

• area (c4d.gui.GeUserArea) – The user area used to determine the text width with GeUserArea.DrawGetTextWidth().

Return type

int

Returns

The column width.

TreeViewFunctions.GetHeaderColumnWidth(self, root, userdata, col, area)

Called to retrieve the width of the header for column col.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• col (int) – The column index.

• area (c4d.gui.GeUserArea) – The user area used to determine the text width with GeUserArea.DrawGetTextWidth().

Return type

int

Returns

The header column width, or a negative number for auto header width.

TreeViewFunctions.GetLineHeight(self, root, userdata, obj, col, area)

Called to retrieve the line height of object obj in column col.

Note

Always return a positive value.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• col (int) – The column index.

• area (c4d.gui.GeUserArea) – The user area used to determine the text height with GeUserArea.DrawGetFontHeight().

Return type

int

Returns

The line height.

TreeViewFunctions.GetMinHeaderHeight(self, root, userdata, area)

Called to retrieve the minimum header height.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• area (c4d.gui.GeUserArea) – The user area used to determine the text height with GeUserArea.DrawGetFontHeight().

Return type

int

Returns

The minimum header height, or a negative value for auto header height.

TreeViewFunctions.EmptyText(self, root, userdata)

Called to requests the text to display when the treeview area is completely empty such as “Drag falloff object’s here”

New in version R25.010.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

Returns

the text to display in the empty treeview area.

Return type

str

TreeViewFunctions.GetBubbleHelp(self, root, userdata, obj, col, info)

Called to retrieve the bubble help of object.

New in version 24.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• col (int) – The column index.

• info (dict) – The mouse information. See MouseInfo Dict.

Return type

str

Returns

The bubble help of the object.

TreeViewFunctions.GetName(self, root, userdata, obj)

Called to retrieve the name of object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

str

Returns

The object name.

TreeViewFunctions.GetNameForEdit(self, root, userdata, obj)

Called to retrieve the name of object obj for display in the edit text box.

New in version R25.010.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Returns

The object name.

Return type

str

TreeViewFunctions.SetName(self, root, userdata, obj, str)

Called to set the name of object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• str (str) – The new object name.

TreeViewFunctions.GetDown(self, root, userdata, obj)

Called to retrieve the first child of obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

Optional[Any]

Returns

The first child of obj.

TreeViewFunctions.GetFirst(self, root, userdata)

Called to retrieve the first object of the tree.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

Return type

Optional[Any]

Returns

The first object.

TreeViewFunctions.GetNext(self, root, userdata, obj)

Called to retrieve the object after obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

Optional[Any]

Returns

The object after obj.

TreeViewFunctions.GetPred(self, root, userdata, obj)

Called to retrieve the object before obj.

Note

This is only used for drag and drop checks.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

Optional[Any]

Returns

The object before obj.

TreeViewFunctions.AddRow(self, root, userdata)

Called when a requests to add a row to the treeview.

New in version R25.010.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

TreeViewFunctions.ColumnMoved(self, root, userdata, lColID, lInsertBeforeCol, plIndexMap, pbcLayout)

Called when a column has been moved.

New in version R25.010.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• lColID (int) – The horizontal scroll steps.

• lInsertBeforeCol (int) – The column to insert lColID before.

• plIndexMap (List[int]) – The column index map array.

• pbcLayout (c4d.BaseContainer) – The new layout container. Basically the same as the container passed in TreeViewCustomGui.SetLayout() but reflecting the changed column order.

TreeViewFunctions.PaintFinished(self, root, userdata)

Called when a paint selection has been performed in the tree view.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

TreeViewFunctions.Scrolled(self, root, userdata, h, v, x, y)

Called when the tree view has been scrolled.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• h (int) – The horizontal scroll steps.

• v (int) – The vertical scroll steps.

• x (int) – The X offset.

• y (int) – The Y offset.

TreeViewFunctions.SelectionChanged(self, root, userdata)

Called when selection has changed.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

TreeViewFunctions.IsOpened(self, root, userdata, obj)

Called to retrieve the folding status of object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

bool

Returns

True if the object is opened, otherwise False.

TreeViewFunctions.Open(self, root, userdata, obj, onoff)

Called to open or close object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• onoff (bool) – True if obj should be opened, otherwise False.

TreeViewFunctions.IsSelectable(self, root, userdata, obj)

Checks if the object is selectable, used to determine if the object should be skipped (not selectable) or not (selectable) when changing selection with keyboard (Up/Down/Home/End keys).

New in version R25.010.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Returns

True if The object is selectable, otherwise False.

Return type

bool

TreeViewFunctions.IsSelected(self, root, userdata, obj)

Called to retrieve the selection status of object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

Return type

bool

Returns

True if the object is selected, otherwise False.

TreeViewFunctions.Select(self, root, userdata, obj, mode)

Called to select object obj.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

• obj (any) – An object in the tree.

• mode (int) –

  The selection mode:

  SELECTION_NEW	Starts a new selection.
  SELECTION_ADD	Adds to the current selection
  SELECTION_SUB	Subtracts from the current selection.

TreeViewFunctions.IsTristate(self, root, userdata)

Called to retrieve the tristate flag of the tree.

Parameters

• root (any) – The tree root passed to TreeViewCustomGui.SetRoot().

• userdata (any) – The user data passed to TreeViewCustomGui.SetRoot().

Return type

bool

Returns

True if the tristate flag is set, otherwise False.