thank you very much! It's help me a lot! sorry about the multiple topics, I'll take them apart next time

hello,guys
there is some problem with CUSTOMGUI_BITMAPBUTTON, I want to use it to create a file browser.
my envirment: c4d R26, Python
1.width self-adaptive，when I change the dialog width，the number of BitmapButton in row could be changed by the dialog width。

just like this.
here is my demo picture

2.can I capture the double click event Message with bitmapbutton? I want entry the directory when I double click the directory bitmapbutton。

3.the bottom of the directory bitmapbutton Text
when the text is too long, it will be hide in the end
exp. Text is “electric wire”
I want Is Shows "delctric..."
but is Shows "electric w"
how could I measure the width,or Is there have some other solution?

thanks very much for reading! have a good day!

here is my demo code

import c4d

class Test1Dialog(c4d.gui.GeDialog):
    ID_BITMAP_BUTTON = 10000
    ID_BITMAP_TEXT = 20000
    BITMAP_WIDTH = 50

    def CreateLayout(self):
        """Creates the layout for the dialog.
        """
        if self.ScrollGroupBegin(0, c4d.BFH_SCALEFIT | c4d.BFV_SCALEFIT, c4d.SCROLLGROUP_VERT  |  c4d.SCROLLGROUP_AUTOVERT, 80, 80):
            if self.GroupBegin(1, c4d.BFH_LEFT | c4d.BFV_TOP, 0, 0, "", c4d.BFV_GRIDGROUP_EQUALCOLS | c4d.BFV_GRIDGROUP_EQUALROWS | c4d.BFV_DIALOG_BAR_VERT | c4d.BFV_LAYOUTGROUP_PALETTEOUTLINES):
                for i in range(30):
                    bc = c4d.BaseContainer()
                    bc[c4d.BITMAPBUTTON_BUTTON] = True
                    bc[c4d.BITMAPBUTTON_ICONID1] = 1052837
                    bc[c4d.BITMAPBUTTON_BACKCOLOR] = c4d.COLOR_BG
                    bc[c4d.BITMAPBUTTON_DISABLE_FADING] = False
                    bc[c4d.BITMAPBUTTON_FORCE_SIZE] = Test1Dialog.BITMAP_WIDTH
                    if self.GroupBegin(0, c4d.BFH_LEFT, 1, 2):
                        self.AddCustomGui(Test1Dialog.ID_BITMAP_BUTTON + i, c4d.CUSTOMGUI_BITMAPBUTTON, "", c4d.BFH_CENTER | c4d.BFV_CENTER, 0, 0, bc)
                        self.AddStaticText(id= Test1Dialog.ID_BITMAP_TEXT + i,flags=c4d.BFH_SCALEFIT,initw=Test1Dialog.BITMAP_WIDTH,inith=0,name="test string number" + str(i) ,borderstyle=0)
                    self.GroupEnd()
            self.GroupEnd()
        self.GroupEnd()
        self.AddDlgGroup(c4d.DLG_OK | c4d.DLG_CANCEL)
        return True

def main():
    global dialog
    dialog = Test1Dialog()
    dialog.Open(dlgtype=c4d.DLG_TYPE_ASYNC, defaultw=-2, defaulth=-2)

if __name__ == '__main__':
    main()

@ferdinand thanks a lot， best wishes!

hi @ferdinand about 3,I'm try to exeute the example code by the link provided, but It seems not work,It opens as Separate Window.

hi @ferdinand
These responses are very useful to me,Thank you for taking so much time to reply,Have a nice day!

hello,guys
I'm implement some functions like model manage system, similar with asset browser, but the data come from Remote DataBase，so this is some questions on my way。

my environment
python
c4d R26
code:

import c4d

ID_NAME = 1              

PLUGIN_ID = 3000011 # TEST ID ONLY

class TreeNode(object):
    data = None
    _selected = False

    def __init__(self, data):
        self.data = data

    @property
    def Text(self):
        return self.__text

    @Text.setter
    def Text(self, value: str):
        self.__text = value

    @property
    def IsSelected(self):
        return self._selected

    def Select(self):
        self._selected = True

    def Deselect(self):
        self._selected = False

    def __repr__(self):
        return str(self)

    def __str__(self):
        return str(self.data)

class TreeView(c4d.gui.TreeViewFunctions):

    def __init__(self):
        self.listOfItems = list() # Store all objects we need to display in this list

    def IsResizeColAllowed(self, root, userdata, lColID):
        return True

    def IsTristate(self, root, userdata):
        return False

    def GetColumnWidth(self, root, userdata, obj, col, area):
        return 80  # All have the same initial width

    def IsMoveColAllowed(self, root, userdata, lColID):
        # The user is allowed to move all columns.
        # TREEVIEW_MOVE_COLUMN must be set in the container of AddCustomGui.
        return False

    def GetFirst(self, root, userdata):
        """
        Return the first element in the hierarchy, or None if there is no element.
        """
        rValue = None if not self.listOfItems else self.listOfItems[0]
        return rValue

    def GetDown(self, root, userdata, obj):
        """
        Return a child of a node, since we only want a list, we return None everytime
        """
        return None

    def GetNext(self, root, userdata, obj):
        """
        Returns the next Object to display after arg:'obj'
        """
        rValue = None
        currentObjIndex = self.listOfItems.index(obj)
        nextIndex = currentObjIndex + 1
        if nextIndex < len(self.listOfItems):
            rValue = self.listOfItems[nextIndex]

        return rValue

    def GetPred(self, root, userdata, obj):
        """
        Returns the previous Object to display before arg:'obj'
        """
        rValue = None
        currentObjIndex = self.listOfItems.index(obj)
        predIndex = currentObjIndex - 1
        if 0 <= predIndex < len(self.listOfItems):
            rValue = self.listOfItems[predIndex]

        return rValue

    def GetId(self, root, userdata, obj):
        """
        Return a unique ID for the element in the TreeView.
        """
        return hash(obj)

    def Select(self, root, userdata, obj, mode):
        """
        Called when the user selects an element.
        """
        if mode == c4d.SELECTION_NEW:
            for tex in self.listOfItems:
                tex.Deselect()
            obj.Select()
        elif mode == c4d.SELECTION_ADD:
            obj.Select()
        elif mode == c4d.SELECTION_SUB:
            obj.Deselect()

    def IsSelected(self, root, userdata, obj):
        """
        Returns: True if *obj* is selected, False if not.
        """
        return obj.IsSelected

    def SetCheck(self, root, userdata, obj, column, checked, msg):
        """
        Called when the user clicks on a checkbox for an object in a
        `c4d.LV_CHECKBOX` column.
        """
        if checked:
            for tex in self.listOfItems:
                tex.Deselect()
            obj.Select()
        else:
            obj.Deselect()

    def IsChecked(self, root, userdata, obj, column):
        """
        Returns: (int): Status of the checkbox in the specified *column* for *obj*.
        """
        if obj.IsSelected:
            return c4d.LV_CHECKBOX_CHECKED | c4d.LV_CHECKBOX_ENABLED
        else:
            return c4d.LV_CHECKBOX_ENABLED

    def GetName(self, root, userdata, obj):
        """
        Returns the name to display for arg:'obj', only called for column of type LV_TREE
        """
        return str(obj.Text)

    def DrawCell(self, root, userdata, obj, col, drawinfo, bgColor):
        """
        Draw into a Cell, only called for column of type LV_USER
        """
        value = obj.Text
        geUserArea = drawinfo["frame"]
        w = geUserArea.DrawGetTextWidth(value)
        h = geUserArea.DrawGetFontHeight()
        xpos = drawinfo["xpos"]
        ypos = drawinfo["ypos"] + drawinfo["height"]
        drawinfo["frame"].DrawText(value, xpos, ypos - h * 1.1)

    def DoubleClick(self, root, userdata, obj, col, mouseinfo):
        """
        Called when the user double-clicks on an entry in the TreeView.

        Returns:
          (bool): True if the double-click was handled, False if the
            default action should kick in. The default action will invoke
            the rename procedure for the object, causing `SetName()` to be
            called.
        """
        return True

    def EmptyText(self, root: object, userdata: object) -> str:
        return "empty"

class TestTreeDialog(c4d.gui.SubDialog):
    _treegui = None # Our CustomGui TreeView
    _listView = TreeView() # Our Instance of c4d.gui.TreeViewFunctions
    ID_LISTVIEW = 10000

    def CreateLayout(self):

        if self.GroupBegin(0, c4d.BFH_SCALEFIT | c4d.BFV_SCALEFIT, cols=2):
            # Create the TreeView GUI.
            customgui = c4d.BaseContainer()
            customgui.SetBool(c4d.TREEVIEW_BORDER, c4d.BORDER_THIN_OUT)
            # True if the tree view may have a header line.
            customgui.SetBool(c4d.TREEVIEW_HAS_HEADER, True)
            # True if no lines should be drawn.
            customgui.SetBool(c4d.TREEVIEW_HIDE_LINES, False)
            # True if the user can move the columns.
            customgui.SetBool(c4d.TREEVIEW_MOVE_COLUMN, True)
            # True if the column width can be changed by the user.
            customgui.SetBool(c4d.TREEVIEW_RESIZE_HEADER, True)
            # True if all lines have the same height.
            customgui.SetBool(c4d.TREEVIEW_FIXED_LAYOUT, True)
            # Alternate background per line.
            customgui.SetBool(c4d.TREEVIEW_ALTERNATE_BG, True)
            # True if cursor keys should be processed.
            customgui.SetBool(c4d.TREEVIEW_CURSORKEYS, True)
            # Suppresses the rename popup when the user presses enter.
            customgui.SetBool(c4d.TREEVIEW_NOENTERRENAME, False)
            customgui.SetBool(c4d.TREEVIEW_NO_MULTISELECT, True)
            #customgui.SetBool(c4d.TREEVIEW_RESIZABLE, True)

            self._treegui = self.AddCustomGui(
                self.ID_LISTVIEW, c4d.CUSTOMGUI_TREEVIEW, "", c4d.BFH_SCALEFIT|c4d.BFV_SCALEFIT, 50, 100, customgui)
            if not self._treegui:
                print("[ERROR]: Could not create TreeView")
                return False
            self.AddMultiLineEditText(0, c4d.BFH_SCALEFIT|c4d.BFV_SCALEFIT, 80,100)
        self.GroupEnd()
        return True

    def InitValues(self):

        #testcode
        node1 = TreeNode("1")
        node1.Text = "a1"
        self._listView.listOfItems.append(node1)

        node2 = TreeNode("1")
        node2.Text = "a2"
        self._listView.listOfItems.append(node2)

        # Initialize the column layout for the TreeView.
        layout = c4d.BaseContainer()
        layout.SetLong(ID_NAME, c4d.LV_TREE)

        self._treegui.SetLayout(1, layout)

        # Set the header titles.
        self._treegui.SetHeaderText(ID_NAME, "name")
        #self._treegui.Refresh()

        # Set TreeViewFunctions instance used by our CUSTOMGUI_TREEVIEW
        self._treegui.SetRoot(self._treegui, self._listView, None)
        self._treegui.Refresh()

        return True

    def Command(self, messageId, bc):
        return True

class MenuToolData(c4d.plugins.ToolData):
    dialog = None

    def Message(self, doc, data, msgType, t_data):
        return True

    def AllocSubDialog(self, bc):  
        return TestTreeDialog()

    def GetState(self, doc):
        return c4d.CMD_ENABLED

    def MouseInput(self, doc, data, bd, win, msg):
        return True


def main() -> None:
    # c4d.plugins.RegisterCommandPlugin(
    #     PLUGIN_ID, "treeTest1", 0, None, "treeTest1", MenuCommand())

    c4d.plugins.RegisterToolPlugin(PLUGIN_ID, "treeTest2menu", 0, None,"treeTest2describe", MenuToolData())

if __name__ == '__main__':
    main()

1.is there any way to add a separator in the model of the two control, so I'can drag to resize,

like asset browser.

2.how to hide this title? It's seem useless

3.can embed the Dialog like asset browser?

thanks a lot!

@ferdinand thank you very much,it had been solved According to your method，have a good day!

hello guys:
when i'm using TreeViewCustomGui(python)，there is some problem。
1.CUSTOMGUI_TREEVIEW is empty，this is some ??? showing in the form

2.when i use DLG_TYPE_ASYNC, the open form show empty, if i instead of using DLG_TYPE_MODAL it shows normal。

does somewhere i use wrong？

sorry about the grammar
best wishes