No scrolling region or selectable items inside Child

[PreetomBoro]

Version/Branch of Dear ImGui:

Version 1.90.5 WIP, Branch: docking

Back-ends:

imgui_impl_glfw.cpp + imgui_impl_opengl3.cpp

Compiler, OS:

Windows 10 + Mingw64

Full config/build information:

Dear ImGui 1.90.5 WIP (19046)
--------------------------------
sizeof(size_t): 8, sizeof(ImDrawIdx): 2, sizeof(ImDrawVert): 20
define: __cplusplus=201703
define: _WIN32
define: _WIN64
define: __MINGW32__
define: __MINGW64__
define: __GNUC__=13
define: IMGUI_HAS_VIEWPORT
define: IMGUI_HAS_DOCK
--------------------------------
io.BackendPlatformName: imgui_impl_glfw
io.BackendRendererName: imgui_impl_opengl3
io.ConfigFlags: 0x00000443
 NavEnableKeyboard
 NavEnableGamepad
 DockingEnable
 ViewportsEnable
io.ConfigViewportsNoDecoration
io.ConfigInputTextCursorBlink
io.ConfigWindowsResizeFromEdges
io.ConfigMemoryCompactTimer = 60.0
io.BackendFlags: 0x00001C06
 HasMouseCursors
 HasSetMousePos
 PlatformHasViewports
 HasMouseHoveredViewport
 RendererHasViewports
--------------------------------
io.Fonts: 1 fonts, Flags: 0x00000000, TexSize: 512,64
io.DisplaySize: 1920.00,1051.00
io.DisplayFramebufferScale: 1.00,1.00
--------------------------------
style.WindowPadding: 8.00,8.00
style.WindowBorderSize: 1.00
style.FramePadding: 4.00,3.00
style.FrameRounding: 0.00
style.FrameBorderSize: 0.00
style.ItemSpacing: 8.00,4.00
style.ItemInnerSpacing: 4.00,4.00

Details:

My Issue/Question:

XXX (please provide as much context as possible)
I was trying out the 2nd example code in the readme.md

In the example the child gives a scrollable area bound but box with clickable items. But my code for some reason only gives text nothing more nothing less. Where have I gone wrong?

Screenshots/Video:

Minimal, Complete and Verifiable Example code:

// Here's some code anyone can copy and paste to reproduce your issue
namespace XPLORER
{
    void ShowXplorer()
    {
        if (ImGui::Begin("Xplorer"))
        {
            ImGui::Text("This is a text");
            ImGui::Button("smash");
            ImGui::BeginChild("the sub window");

            for(int n=0; n<10; n++)
            {
                ImGui::Text("something %0d",n);
            }

            ImGui::EndChild();

        ImGui::End();
        }

        return;
    }
}

[PreetomBoro]

I feel super dumb. I called ImGui::Text() and wondering why it's not clickable.
But still trying to figure out why there isn't a scrollable region

[PreetomBoro]

added this code after the EndChild() (also the defination of HelpMaker as in the imgui_demo.cpp)and seems like it works

HelpMarker("Drag bottom border to resize. Double-click bottom border to auto-fit to vertical contents.");
ImGui::PushStyleColor(ImGuiCol_ChildBg, ImGui::GetStyleColorVec4(ImGuiCol_FrameBg));
if (ImGui::BeginChild("ResizableChild", ImVec2(-FLT_MIN, ImGui::GetTextLineHeightWithSpacing() * 8), ImGuiChildFlags_Border | ImGuiChildFlags_ResizeY))
    for (int n = 0; n < 10; n++)
        ImGui::Text("Line %04d", n);
ImGui::PopStyleColor();
ImGui::EndChild();

[ocornut]

You may use ImGuiChildFlags_Border to add a border to the child, and ImGuiChildFlags_FrameStyle to automatically use the colors of e.g. FrameBg instead of WindowBg, which is what ListBox do.