Object selection box with eyedropper

Question

How to add an eyedropper functionality to prop_search in my addon?

col.prop_search(scene, "string_property", context.scene, "objects")

This code will create prop_search just like on the animation below, but without an eyedropper.

eyedropper

I think the property should be a pointer and the eyedropper will appear — Chebhou, May 06 '15 at 12:40
I already tried PointerProperty(type=bpy.types.Object), but it seems that pointer property points only to classes, and cannot store an ID block. — Mikhail Rachinskiy, May 07 '15 at 06:48

score 10 · Accepted Answer · edited Nov 02 '21 at 15:21

10

I spoke to Campbell Barton (the developer who got eyedropper functionality implemented) about this, he said that this kind of functionality is not available in Python API at the moment.

UPDATE:

Blender 2.79 now allows to create add-on properties which reference datablocks.

custom_property: PointerProperty(type=bpy.types.Object)

Using this property with a prop_search() we'll get search box with an eyedropper.

UPDATE 2:

Usage of prop_search() is not necessary, in this case prop() will do just fine.
Noted by J. Bakker.

edited Nov 02 '21 at 15:21

Gorgious

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answered May 17 '15 at 16:59

Mikhail Rachinskiy

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Did you submit a feature request in the Blender bug tracker? – vvoovv May 05 '16 at 22:56
I added a feature request to the Blender tracker: https://developer.blender.org/T48357 – vvoovv May 05 '16 at 23:34
The same feature request at the new community website for Blender development ideas: https://rightclickselect.com/p/scripting/zkbbbc/ – vvoovv May 06 '16 at 15:05
@brockmann, example code – Mikhail Rachinskiy Jun 04 '17 at 05:15
4

Even without a prop_search, just a regular prop, you will get a Eyedropper – J. Bakker Feb 19 '18 at 19:48
I'll have to try this out! Is it possible to capture the object you picked, and update a UIList item with that object/data? Mainly just need to see if / how can trigger a def or something if possible, on picked? – user62077 Sep 06 '18 at 14:52
@mattli911 yes PonterProperty has update parameter API doc. – Mikhail Rachinskiy Sep 07 '18 at 16:12
@MikhailRachinskiy your example code is no longer there. Can you explain how to use this again? Thanks – Joseph Brandenburg Aug 14 '19 at 02:35
@JosephBrandenburg It still there, property implementation example is under first UPDATE, and property UI usage is under second UPDATE 2. – Mikhail Rachinskiy Aug 16 '19 at 14:14
When I click the link I get an empty page. But I figured out what I was doing wrong: it isn't supported for bpy.types.Operator classes. – Joseph Brandenburg Aug 16 '19 at 14:59

batFINGER · Answer 2 · 2020-08-15T13:09:15.123

A working example based on answers given.

Given the struggles of How to draw Object selection with eyedropper layout using Python script here is an edit to the script from that question

Puts a panel in the "scene" tab of the properties area.

import bpy
from bpy.props import PointerProperty
class TEST_PT_layout_panel(bpy.types.Panel):
    bl_label = "Prop Panels"
    bl_category = "Test Panel"
    bl_space_type = 'PROPERTIES'
    bl_region_type = 'WINDOW'
    bl_context = "scene"
def draw(self, context):
    scene = context.scene
    layout = self.layout

    col = layout.column()
    col.prop_search(scene, &quot;prop&quot;, context.scene, &quot;objects&quot;)
    #or 
    col.prop(scene, &quot;prop&quot;)



def register():
    bpy.types.Scene.prop = PointerProperty(type=bpy.types.Object)
    bpy.utils.register_class(TEST_PT_layout_panel)
def unregister():
    bpy.utils.unregister_class(TEST_PT_layout_panel)
if name == "main":
    register()

See https://blender.stackexchange.com/a/101303/15543 re creating a poll method for the pointer to filter, for example, for objects of type armature in the scene.

Object selection box with eyedropper

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