Method ErrorCheckEndFrameSanityChecks

src/imgui/imgui.cpp:10727–10744

}

static void ImGui::ErrorCheckEndFrameSanityChecks()
{
    // Verify that io.KeyXXX fields haven't been tampered with. Key mods should not be modified between NewFrame() and EndFrame()
    // One possible reason leading to this assert is that your backends update inputs _AFTER_ NewFrame().
    // It is known that when some modal native windows called mid-frame takes focus away, some backends such as GLFW will
    // send key release events mid-frame. This would normally trigger this assertion and lead to sheared inputs.
    // We silently accommodate for this case by ignoring the case where all io.KeyXXX modifiers were released (aka key_mod_flags == 0),
    // while still correctly asserting on mid-frame key press events.
    ImGuiContext& g = *GImGui;
    const ImGuiKeyChord key_mods = GetMergedModsFromKeys();
    IM_UNUSED(g);
    IM_UNUSED(key_mods);
    IM_ASSERT((key_mods == 0 || g.IO.KeyMods == key_mods) && "Mismatching io.KeyCtrl/io.KeyShift/io.KeyAlt/io.KeySuper vs io.KeyMods");
    IM_UNUSED(key_mods);

    IM_ASSERT(g.CurrentWindowStack.Size == 1);
    IM_ASSERT(g.CurrentWindowStack[0].Window->IsFallbackWindow);
}

// Save current stack sizes. Called e.g. by NewFrame() and by Begin() but may be called for manual recovery.
void ImGui::ErrorRecoveryStoreState(ImGuiErrorRecoveryState* state_out)