Function EditTableSizingFlags

core/src/imgui/imgui_demo.cpp:3456–3496

Show a combo box with a choice of sizing policies

// Show a combo box with a choice of sizing policies
static void EditTableSizingFlags(ImGuiTableFlags* p_flags)
{
    struct EnumDesc { ImGuiTableFlags Value; const char* Name; const char* Tooltip; };
    static const EnumDesc policies[] =
    {
        { ImGuiTableFlags_None,               "Default",                            "Use default sizing policy:\n- ImGuiTableFlags_SizingFixedFit if ScrollX is on or if host window has ImGuiWindowFlags_AlwaysAutoResize.\n- ImGuiTableFlags_SizingStretchSame otherwise." },
        { ImGuiTableFlags_SizingFixedFit,     "ImGuiTableFlags_SizingFixedFit",     "Columns default to _WidthFixed (if resizable) or _WidthAuto (if not resizable), matching contents width." },
        { ImGuiTableFlags_SizingFixedSame,    "ImGuiTableFlags_SizingFixedSame",    "Columns are all the same width, matching the maximum contents width.\nImplicitly disable ImGuiTableFlags_Resizable and enable ImGuiTableFlags_NoKeepColumnsVisible." },
        { ImGuiTableFlags_SizingStretchProp,  "ImGuiTableFlags_SizingStretchProp",  "Columns default to _WidthStretch with weights proportional to their widths." },
        { ImGuiTableFlags_SizingStretchSame,  "ImGuiTableFlags_SizingStretchSame",  "Columns default to _WidthStretch with same weights." }
    };
    int idx;
    for (idx = 0; idx < IM_ARRAYSIZE(policies); idx++)
        if (policies[idx].Value == (*p_flags & ImGuiTableFlags_SizingMask_))
            break;
    const char* preview_text = (idx < IM_ARRAYSIZE(policies)) ? policies[idx].Name + (idx > 0 ? strlen("ImGuiTableFlags") : 0) : "";
    if (ImGui::BeginCombo("Sizing Policy", preview_text))
    {
        for (int n = 0; n < IM_ARRAYSIZE(policies); n++)
            if (ImGui::Selectable(policies[n].Name, idx == n))
                *p_flags = (*p_flags & ~ImGuiTableFlags_SizingMask_) | policies[n].Value;
        ImGui::EndCombo();
    }
    ImGui::SameLine();
    ImGui::TextDisabled("(?)");
    if (ImGui::IsItemHovered())
    {
        ImGui::BeginTooltip();
        ImGui::PushTextWrapPos(ImGui::GetFontSize() * 50.0f);
        for (int m = 0; m < IM_ARRAYSIZE(policies); m++)
        {
            ImGui::Separator();
            ImGui::Text("%s:", policies[m].Name);
            ImGui::Separator();
            ImGui::SetCursorPosX(ImGui::GetCursorPosX() + ImGui::GetStyle().IndentSpacing * 0.5f);
            ImGui::TextUnformatted(policies[m].Tooltip);
        }
        ImGui::PopTextWrapPos();
        ImGui::EndTooltip();
    }
}

static void EditTableColumnsFlags(ImGuiTableColumnFlags* p_flags)
{