Method BeginTooltipEx

core/src/imgui/imgui.cpp:8013–8043

}

void ImGui::BeginTooltipEx(ImGuiWindowFlags extra_flags, ImGuiTooltipFlags tooltip_flags)
{
    ImGuiContext& g = *GImGui;

    if (g.DragDropWithinSource || g.DragDropWithinTarget)
    {
        // The default tooltip position is a little offset to give space to see the context menu (it's also clamped within the current viewport/monitor)
        // In the context of a dragging tooltip we try to reduce that offset and we enforce following the cursor.
        // Whatever we do we want to call SetNextWindowPos() to enforce a tooltip position and disable clipping the tooltip without our display area, like regular tooltip do.
        //ImVec2 tooltip_pos = g.IO.MousePos - g.ActiveIdClickOffset - g.Style.WindowPadding;
        ImVec2 tooltip_pos = g.IO.MousePos + ImVec2(16 * g.Style.MouseCursorScale, 8 * g.Style.MouseCursorScale);
        SetNextWindowPos(tooltip_pos);
        SetNextWindowBgAlpha(g.Style.Colors[ImGuiCol_PopupBg].w * 0.60f);
        //PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * 0.60f); // This would be nice but e.g ColorButton with checkboard has issue with transparent colors :(
        tooltip_flags |= ImGuiTooltipFlags_OverridePreviousTooltip;
    }

    char window_name[16];
    ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", g.TooltipOverrideCount);
    if (tooltip_flags & ImGuiTooltipFlags_OverridePreviousTooltip)
        if (ImGuiWindow* window = FindWindowByName(window_name))
            if (window->Active)
            {
                // Hide previous tooltip from being displayed. We can't easily "reset" the content of a window so we create a new one.
                window->Hidden = true;
                window->HiddenFramesCanSkipItems = 1; // FIXME: This may not be necessary?
                ImFormatString(window_name, IM_ARRAYSIZE(window_name), "##Tooltip_%02d", ++g.TooltipOverrideCount);
            }
    ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip | ImGuiWindowFlags_NoInputs | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_AlwaysAutoResize;
    Begin(window_name, NULL, flags | extra_flags);
}

void ImGui::EndTooltip()
{