Method ErrorLog

include/imgui/imgui.cpp:11142–11185

}

bool    ImGui::ErrorLog(const char* msg)
{
    ImGuiContext& g = *GImGui;

    // Output to debug log
#ifndef IMGUI_DISABLE_DEBUG_TOOLS
    ImGuiWindow* window = g.CurrentWindow;

    if (g.IO.ConfigErrorRecoveryEnableDebugLog)
    {
        if (g.ErrorFirst)
            IMGUI_DEBUG_LOG_ERROR("[imgui-error] (current settings: Assert=%d, Log=%d, Tooltip=%d)\n",
                g.IO.ConfigErrorRecoveryEnableAssert, g.IO.ConfigErrorRecoveryEnableDebugLog, g.IO.ConfigErrorRecoveryEnableTooltip);
        IMGUI_DEBUG_LOG_ERROR("[imgui-error] In window '%s': %s\n", window ? window->Name : "NULL", msg);
    }
    g.ErrorFirst = false;

    // Output to tooltip
    if (g.IO.ConfigErrorRecoveryEnableTooltip)
    {
        if (g.WithinFrameScope && BeginErrorTooltip())
        {
            if (g.ErrorCountCurrentFrame < 20)
            {
                Text("In window '%s': %s", window ? window->Name : "NULL", msg);
                if (window && (!window->IsFallbackWindow || window->WasActive))
                    GetForegroundDrawList(window)->AddRect(window->Pos, window->Pos + window->Size, IM_COL32(255, 0, 0, 255));
            }
            if (g.ErrorCountCurrentFrame == 20)
                Text("(and more errors)");
            // EndFrame() will amend debug buttons to this window, after all errors have been submitted.
            EndErrorTooltip();
        }
        g.ErrorCountCurrentFrame++;
    }
#endif

    // Output to callback
    if (g.ErrorCallback != NULL)
        g.ErrorCallback(&g, g.ErrorCallbackUserData, msg);

    // Return whether we should assert
    return g.IO.ConfigErrorRecoveryEnableAssert;
}

// Display an error tooltip when same ID as HoveredId was submitted multiple times.
// See code in ItemHoverable() for an explanation of why we associate this error to HoveredId + code drawing of rectangles over individual items instances.