pub unsafe extern "C" fn igDockContextCalcDropPosForDocking(
target: *mut ImGuiWindow,
target_node: *mut ImGuiDockNode,
payload_window: *mut ImGuiWindow,
payload_node: *mut ImGuiDockNode,
split_dir: ImGuiDir,
split_outer: bool,
out_pos: *mut ImVec2_c,
) -> bool