does always_vertical_scrollbar work for anyone?

[biggysmith]

Hi all,

I'm porting a cpp imgui app to python but always_vertical_scrollbar seems to have no effect. In my cpp code ImGuiWindowFlags_::ImGuiWindowFlags_AlwaysVerticalScrollbar works fine but the equivalent imgui.WindowFlags_.always_vertical_scrollbar doesn't.

I've tried various versions of the following:

window_flags = 0
window_flags |= imgui.WindowFlags_.always_vertical_scrollbar.value
a, b= imgui.begin(self.title, None, window_flags)

anyone managed to get this working in python before?

[pthom]

Hum, the code below

from imgui_bundle import imgui, hello_imgui

def gui():
    window_flags = imgui.WindowFlags_.always_vertical_scrollbar.value
    a, b= imgui.begin("Hello", None, window_flags)
    imgui.text("Hello, world!")
    imgui.end()

hello_imgui.run(gui)

does show a vertical scrollbar

[biggysmith]

I'm not using hello_imgui, maybe its my glfw setup? although I copied from the glfw example. I'll keep investigating...

[tingspain]

Hello @biggysmith,

I'm also not using hello_imgui. I’m working with a modified version of the GLFW example, and the flag works fine for me. I’ve never encountered any issues using flags, even I’ve never used .value to apply them. ^___^

This is the code I am using:

 if imgui.begin("Always Vertical Scrollbar", True, imgui.WindowFlags_.always_vertical_scrollbar):
            imgui.text("Hello, world!")
            imgui.end()

This is what I get:

The same as @pthom but no using hello_imgui.

If it's not working for you, could you share your code or at least provide a minimal example that reproduces the issue? That way, we can take a closer look!

[biggysmith]

Hi,

In the process of making a reproducer I found the issue: I was doing a nested begin e.g.

imgui.set_next_window_size([256, 256], imgui.Cond_.first_use_ever)
is_win, show_custom_window = imgui.begin("Window", None)
if is_win:

    is_win2, show_custom_window2 = imgui.begin("Window", None, imgui.WindowFlags_.always_vertical_scrollbar.value)
    if is_win2:

        imgui.end() 
                        
    imgui.end() 

adding the flag to outer begin works, although I shouldn't really be using the nested begin at all ha.

Thanks