How to make scrollbars appear in a wx.lib.scrolledpanel.ScrolledPanel which has no widgets but only a straight line?

wxPython Users
1

Hi,

I create a wx.lib.scrolledpanel.ScrolledPanel with this size: width=500, height=500.
I insert it in its parent panel inside a vertical box sizer.
Then, in ScrolledPanel, I draw a vertical line with a height of 1000.
When I run the app, scrollbars are not displayed on ScrolledPanel. I just see my vertical line with a height of 500, because height of parent panel is 500.

Why doesn’t the vertical scrollbar appear, so that I can scroll down and see the rest of that vertical line? How do I make it appear?

I even try to set the height of ScrolledPanel to 1000 after I draw the vertical line, but it doesn’t work either, something like:

create_parent_panel()
create_scrolled_panel()
put_scrolled_pane_on_parent_panel_and_set_size()
draw_the_vertical_line()
set_scrolled_panels_height_to_1000()
update_and_refresh_scrolled_panel()

but it doesn’t work.

2

steve wrote:

Hi,

I create a wx.lib.scrolledpanel.ScrolledPanel with this size:
width=500, height=500.
I insert it in its parent panel inside a vertical box sizer.
Then, in ScrolledPanel, I draw a vertical line with a height of 1000.
When I run the app, scrollbars are not displayed on ScrolledPanel. I
just see my vertical line with a height of 500, because height of
parent panel is 500.

Why doesn't the vertical scrollbar appear, so that I can scroll down
and see the rest of that vertical line? How do I make it appear?

I even try to set the height of ScrolledPanel to 1000 after I draw the
vertical line, but it doesn't work either, something like:

create_parent_panel()
create_scrolled_panel()
put_scrolled_pane_on_parent_panel_and_set_size()
draw_the_vertical_line()
set_scrolled_panels_height_to_1000()
update_and_refresh_scrolled_panel()

but it doesn't work.

Answered at

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Robin Dunn
Software Craftsman